1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091
|
Network Working Group M. Ahmed
Request for Comments: 1695 K. Tesink
Category: Standards Track Editors
Bell Communications Research
August 1994
Definitions of Managed Objects
for ATM Management Version 8.0
using SMIv2
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Table of Contents
1. Introduction ............................................. 2
2. The SNMPv2 Network Management Framework .................. 2
3. Object Definitions ....................................... 2
4. ATM Terminology .......................................... 3
4.1 VCL/VPL and VCC/VPC ..................................... 3
4.2 PVC and SVC ............................................. 5
4.3 Traffic Management Parameters ........................... 5
4.3.1 Traffic Policing and Traffic Shaping Parameters ...... 5
4.3.2 Cell Loss Priority .................................... 6
4.3.3 QoS Class ............................................. 6
5. Overview ................................................. 7
5.1 Background .............................................. 7
5.2 Structure of the MIB .................................... 7
5.3 ATM Interface Configuration Group ....................... 7
5.4 ATM Interface DS3 PLCP and TC Layer Groups .............. 8
5.5 ATM Virtual Link and Cross-Connect Groups ............... 8
6. Application of MIB II to ATM ............................. 8
6.1 The System Group ........................................ 8
6.2 The Interface Group ..................................... 8
6.2.1 Support of the ATM Cell Layer by ifTable .............. 9
7. Support of the AAL3/4 Based Interfaces ................... 10
8. Support of the AAL5 Managed Objects ...................... 10
8.1 Managing AAL5 in a Switch ............................... 11
8.2 Managing AAL5 in a Host ................................. 12
8.3 Support of AAL5 by ifTable .............................. 13
8.4 Support of Proprietary Virtual Interface by ifT-able .. 14
8.5 AAL5 Connection Performance Statistics Group ............ 15
Ahmed & Tesink [Page 1]
RFC 1695 ATM Management Objects August 1994
9. ILMI MIB and the ATM Managed Objects ..................... 15
10. Definitions ............................................. 18
11. Acknowledgments ......................................... 72
12. References .............................................. 72
13. Security Considerations ................................. 73
14. Authors' Addresses ...................................... 73
1. Introduction
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes objects used for managing ATM-based
interfaces, devices, networks and services.
This memo specifies a MIB module in a manner that is both compliant
to the SNMPv2 SMI, and semantically identical to the peer SNMPv1
definitions.
2. The SNMPv2 Network Management Framework
The SNMPv2 Network Management Framework consists of four major
components. They are:
0 RFC 1442 [1] which defines the SMI, the mechanisms used
for describing and naming objects for the purpose of
management.
0 STD 17, RFC 1213 [2] defines MIB-II, the core set of
managed objects for the Internet suite of protocols.
0 RFC 1445 [3] which defines the administrative and other
architectural aspects of the framework.
0 RFC 1448 [4] which defines the protocol used for network
access to managed objects.
The Framework permits new objects to be defined for the purpose of
experimentation and evaluation.
3. Object Definitions
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the subset of Abstract Syntax Notation One (ASN.1)
defined in the SMI. In particular, each object type is named by an
OBJECT IDENTIFIER, an administratively assigned name. The object
type together with an object instance serves to uniquely identify a
specific instantiation of the object. For human convenience, we
Ahmed & Tesink [Page 2]
RFC 1695 ATM Management Objects August 1994
often use a textual string, termed the descriptor, to also refer to
the object type.
4. ATM Terminology
Some basic ATM terminologies are described in this section to
facilitate defining the ATM managed objects.
4.1. VCL/VPL and VCC/VPC
There are two distinct types of ATM virtual connections: Virtual
Channel Connections (VCCs) and Virtual Path Connection (VPCs). As
shown in Figures 1 and 2, ATM virtual connections consist of
concatenated series of virtual links which forms a path between two
end points, with each concatenation occurring at an ATM switch.
Virtual links of VCCs are called Virtual Channel Links (VCLs).
Virtual links of VPCs are called Virtual Path Links (VPLs). The VCI
and VPI fields in the ATM cell header associate each cell of a VCC
with a particular VCL over a given physical link. The VPI field in
the ATM cell header associates each cell of a VPC with a particular
VPL over a given physical link. Switches route cells between VCLs
(or VPLs) via a cross-connect function according to the cells'
VCI/VPI (or VPI) values.
<-----------------------VCC-------------------------->
------------ -----------
|ATM | |ATM |
|X-Connect | |X-Connect |
VCL1 |Point | VCL2 |Point | VCL3
O---------|----X-----|-------|-----|----X-----|-------O
| | | |
------------ ------------
ATM Switch ATM Switch
Figure 1: Virtual Channel Links and
Virtual Channel Connection
Ahmed & Tesink [Page 3]
RFC 1695 ATM Management Objects August 1994
<-----------------------VPC-------------------------->
------------ -----------
|ATM | |ATM |
|X-Connect | |X-Connect |
VPL1 |Point | VPL2 |Point | VPL3
O---------|----X-----|-------|-----|----X-----|-------O
| | | |
------------ ------------
ATM Switch ATM Switch
Figure 2: Virtual Path Links and
Virtual Path Connection
A single ATM end-system or switch does not support the whole end-to-
end span of a VCC (or VPC). Rather, multiple ATM end- systems and/or
switches each support one piece of the VCC (or VPC). That is, each
ATM end-system at one end of the VCC/VPC supports its end of the
VCC/VPC plus the VCLs or VPLs on its external interfaces, and each
switch through which the VCC/VPC passes, supports the multiple
VCLs/VPLs on that switch's external interfaces and the cross-
connection of those VCLs/VPLs through that switch. Thus, the end-
to-end management of a VCC or VPC is achieved only by appropriate
management of its individual pieces in combination.
Note that for management purposes, an ATM network may be viewed as a
large distributed switch by hiding all the network's internal
connectivity as being internal to the distributed switch (as shown in
Figure 2a). This model may for example be used for Customer Network
Management (CNM) purposes.
Ahmed & Tesink [Page 4]
RFC 1695 ATM Management Objects August 1994
<---------------------VCC--------------------------->
--------------------------------------
| |
| ---------- ---------- |
| | ATM | | ATM | |
VCL1 | | Switch | | Switch | | VCL3
O-------|-|--------|------/-------|--------|-|------O
| | | | | |
| ---------- ---------- |
| |
| ATM Network |
--------------------------------------
Figure 2a: ATM Network modeled as a large distributed
switch
A VCC has a set of traffic characteristics (i.e., bandwidth
parameters, QoS Class parameters, etc.). VCLs inherit their traffic
characteristics from the VCC of which they are a part. VCCs are bi-
directional by definition. However, the traffic parameters in the
two directions of a connection can be symmetric or asymmetric, i.e.,
the two directions can have the same or different traffic flows. A
uni-directional traffic flow across a VCC is achieved by assigning a
zero bandwidth in one direction. Note that in addition to the
bandwidth required by the user traffic flow, bandwidth is also
required for OAM cell flows, even for the zero-bandwidth direction of
a uni-directional connection. These same principles apply to VPCs.
4.2. PVC and SVC
A Permanent Virtual Connection (PVC) is a provisioned VCC or VPC. A
Switched Virtual Connection (SVC) is a switched VCC or VPC that is
set up in real-time via call set-up signaling procedures. A PVC (or
an SVC) can be a point-to-point, point-to-multipoint, or multipoint-
to-multipoint VCC or VPC.
4.3. Traffic Management Parameters
4.3.1. Traffic Policing and Traffic Shaping Parameters
In order to allocate resources fairly among different users, some
networks police traffic at resource access points. The traffic
enforcement or policing taken at a UNI is called Usage Parameter
Control (UPC) and is activated on an incoming VCL or VPL as shown in
Figure 3. The use of the traffic enforcer at the ingress of the
connection is to make sure that the user traffic does not exceed the
Ahmed & Tesink [Page 5]
RFC 1695 ATM Management Objects August 1994
negotiated traffic parameters such as the peak cell rate associated
with a specific traffic descriptor type.
---------- ----------
UNI | ATM | NNI | ATM | UNI
| | switch | | | switch | |
O<---|---->X(UPC) |<----|------>| (UPC)X<-----|--->O
| VCL | | | VCL | | VCL |
---------- ----------
Figure 3: An Example of a UPC
In addition, traffic shaping may be performed on an outgoing VPL or
VCL at a given ATM interface. The function of the ATM traffic shaper
either at the source or an egress point of the connection is to
smooth the outgoing cell traffic inter-arrival time. If policing or
shaping is not performed then the policing or shaping algorithm is
not activated. ATM Forum has specified seven traffic descriptor
types including one for the best effort traffic [9].
4.3.2. Cell Loss Priority
To prioritize traffic during resource congestion, ATM cells are
assigned one of the two types of Cell Loss Priority (CLP), CLP=0 and
CLP=1. ATM cells with CLP=0 have a higher priority in regard to cell
loss than ATM cells with CLP=1. Therefore, during resource
congestions, CLP=1 cells are dropped before any CLP=0 cell is
dropped.
4.3.3. QoS Class
A VCC or VPC is associated with one of a number of Quality of Service
(QoS) classes. The following service classes have been specified:
Service Class A: Constant bit rate video and Circuit
emulation
Service Class B: Variable bit rate video/audio
Service Class C: Connection-oriented data
Service Class D: Connectionless data
Four QoS classes numbered 1, 2, 3, and 4 have been specified with the
aim of supporting service classes A, B, C, and D respectively. The
VCLs (or VPLs) concatenated to form a VCC (or VPC) will all have the
same QoS class as that of the VCC (or VPC). The Cell Loss Ratio
(CLR), Cell Delay Variation (CDV), and end-to-end Cell Delay (CD)
parameters are defined as part of QoS Class definition. In addition,
Ahmed & Tesink [Page 6]
RFC 1695 ATM Management Objects August 1994
an unspecified QoS Class numbered 0 is specified for best effort
traffic.
5. Overview
ATM management objects are used to manage ATM interfaces, ATM virtual
links, ATM cross-connects, AAL5 entities and AAL5 connections
supported by ATM hosts, ATM switches and ATM networks. This section
provides an overview and background of how to use this MIB and other
potential MIBs for this purpose.
The purpose of this memo is primarily to manage ATM PVCs. ATM SVCs
are also represented by the management information in this MIB.
However, full management of SVCs may require additional capabilities
which are beyond the scope of this memo.
5.1. Background
In addition to the MIB module defined in this memo, other MIB modules
are necessary to manage ATM interfaces, links and cross-connects.
Examples include MIB II for general system and interface management
(RFC 1213 and RFC 1573), the DS3 or SONET MIBs for management of
physical interfaces, and, as appropriate, MIB modules for
applications that make use of ATM, such as SMDS. These MIB modules
are outside the scope of this specification.
The current specification of this ATM MIB is based on SNMPv2.
5.2. Structure of the MIB
The managed ATM objects are arranged into the following groups:
(1) ATM interface configuration group
(2) ATM interface DS3 PLCP group
(3) ATM interface TC Sublayer group
(4) ATM interface virtual link (VPL/VCL) configuration
groups
(5) ATM VP/VC cross-connect groups
(6) AAL5 connection performance statistics group
Note that, managed objects for activation/deactivation of OAM cell
flows and ATM traps notifying virtual connection or virtual link
failures are outside the scope of this memo.
5.3. ATM Interface Configuration Group
This group contains information on ATM cell layer configuration of
local ATM interfaces on an ATM device in addition to the information
Ahmed & Tesink [Page 7]
RFC 1695 ATM Management Objects August 1994
on such interfaces contained in the ifTable.
5.4. ATM Interface DS3 PLCP and TC Layer Groups
These groups provide performance statistics of the DS3 PLCP and TC
sublayer of local ATM interfaces on a managed ATM device. DS3 PLCP
and TC sublayer are currently used to carry ATM cells respectively
over DS3 and SONET transmission paths.
5.5. ATM Virtual Link and Cross-Connect Groups
ATM virtual link and cross-connect groups model bi-directional ATM
virtual links and ATM cross-connects. The ATM VP/VC link groups are
implemented in an ATM host, ATM switch and ATM network. The ATM
switch and ATM network also implement the ATM VP/VC cross-connect
groups. Both link and cross-connect groups are implemented in a
carrier's network for Customer Network Management (CNM) purposes.
The ATM virtual link groups are used to create, delete or modify ATM
virtual links in an ATM host, ATM switch and ATM network. ATM
virtual link groups along with the cross-connect groups are used to
create, delete or modify ATM cross-connects in an ATM switch or ATM
network (e.g., for CNM purposes).
6. Application of MIB II to ATM
6.1. The System Group
For the purposes of the sysServices object in the System Group of MIB
II [2], ATM is a data link layer protocol. Thus, for ATM switches
and ATM networks, sysServices will have the value "2".
6.2. The Interface Group
The Interfaces Group of MIB II defines generic managed objects for
managing interfaces. This memo contains the media-specific
extensions to the Interfaces Group for managing ATM interfaces.
This memo assumes the interpretation of the Interfaces Group to be in
accordance with [5] which states that the interfaces table (ifTable)
contains information on the managed resource's interfaces and that
each sub-layer below the internetwork layer of a network interface is
considered an interface. Thus, the ATM cell layer interface is
represented as an entry in the ifTable. This entry is concerned with
the ATM cell layer as a whole, and not with individual virtual
connections which are managed via the ATM-specific managed objects
specified in this memo. The inter-relation of entries in the ifTable
is defined by Interfaces Stack Group defined in [5].
Ahmed & Tesink [Page 8]
RFC 1695 ATM Management Objects August 1994
6.2.1. Support of the ATM Cell Layer by ifTable
Some specific interpretations of ifTable for the ATM cell layer
follow.
Object Use for the generic ATM layer
====== =============================
ifIndex Each ATM port is represented by an ifEntry.
ifDescr Description of the ATM interface.
ifType The value that is allocated for ATM is 37.
ifSpeed The total bandwidth in bits per second
for use by the ATM layer.
ifPhysAddress The interface's address at the ATM protocol
sublayer; the ATM address which would be used
as the value of the Called Party Address
Information Element (IE) of a signalling
message for a connection which either:
- would terminate at this interface, or
- for which the Called Party Address IE
would need to be replaced by the Called
Party SubAddress IE before the message
was forwarded to any other interface.
For an interface on which signalling is
not supported, then the interface does not
necessarily have an address, but if it
does, then ifPhysAddress is the address which
would be used as above in the event that
signalling were supported. If the interface
has multiple such addresses, then ifPhysAddress
is its primary address. If the interface has
no addresses, then ifPhysAddress is an octet
string of zero length. Address encoding is as
per [9]. Note that addresses assigned for
purposes other than those listed above (e.g.,
an address associated with the service provider
side of a public network UNI) may be represented
through atmInterfaceAdminAddress.
ifAdminStatus See [5].
ifOperStatus Assumes the value down(2) if the ATM cell
layer or any layer below that layer is down.
Ahmed & Tesink [Page 9]
RFC 1695 ATM Management Objects August 1994
ifLastChange See [5].
ifInOctets The number of received octets over the
interface, i.e., the number of received,
assigned cells multiplied by 53.
ifOutOctets The number of transmitted octets over the
interface, i.e., the number of transmitted,
assigned cells multiplied by 53.
ifInErrors The number of cells dropped due to
uncorrectable HEC errors.
ifInUnknownProtos The number of received cells discarded
during cell header validation, including
cells with unrecognized VPI/VCI values,
and cells with invalid cell header patterns.
If cells with undefined PTI values are discarded,
they are also counted here.
ifOutErrors See [5].
ifName Textual name (unique on this system) of the
interface or an octet string of zero length.
ifLinkUpDownTrapEnable Default is disabled (2).
ifConnectorPresent Set to false (2).
ifPromiscuousMode Set to false(2).
ifHighSpeed See [5].
ifHCInOctets The 64-bit version of ifInOctets; supported
if required by the compliance statements in [5].
ifHCOutOctets The 64-bit version of ifOutOctets; supported
if required by the compliance statements in [5].
7. Support of the AAL3/4 Based Interfaces
For the management of AAL3/4 CPCS layer, see [6].
8. Support of the AAL5 Managed Objects
Support of AAL5 managed objects in an ATM switch and ATM host are
described below.
Ahmed & Tesink [Page 10]
RFC 1695 ATM Management Objects August 1994
8.1. Managing AAL5 in a Switch
Managing AAL5 in a switch involves:
(1) performance management of an AAL5 entity as
an internal resource in a switch
(2) performance management of AAL5 per virtual connection
AAL5 in a switch is modeled as shown in Figures 4 and 5. AAL5 will
be managed in a switch for only those virtual connections that carry
AAL5 and are terminated at the AAL5 entity in the switch. Note that,
the virtual channels within the ATM UNIs carrying AAL5 will be
switched by the ATM switching fabric (termed as ATM Entity in the
figure) to the virtual channels on a proprietary internal interface
associated with the AAL5 process (termed as AAL5 Entity in the
figure). Therefore, performance management of the AAL5 resource in
the switch will be modeled using the ifTable through an internal
(pseudo-ATM) virtual interface and the AAL5 performance management
per virtual connection will be supported using an additional AAL5
connection table in the ATM MIB. The association between the AAL5
virtual link at the proprietary virtual, internal interface and the
ATM virtual link at the ATM interface will be derived from the
virtual channel cross-connect table and the virtual channel link
table in the ATM MIB.
___________________________
| |
| ============= |
| | AAL5 | |
| | Entity | |
| ============= |
| | |
| -----Prop. Virtual Interface
| | |
| ============= |
| | ATM | |
| | Entity | |
| ============= |
|_____|__|__|__|__|_______|
| | | | |
---------------- ATM UNIs
| | | | |
| | | | |
v v v v v
Figure 4 : Model of an AAL5 Entity in a Switch
Ahmed & Tesink [Page 11]
RFC 1695 ATM Management Objects August 1994
__________________
| |
| AAL5 |
|________________|
| |
| Prop. Virtual |
| Interface |
|________________|
Figure 5 : AAL5 Entity's Interface Stack in a Switch
8.2. Managing AAL5 in a Host
Managing AAL5 in a host involves managing the AAL5 sublayer interface
as shown in Figures 6 and 7. The AAL5 sublayer is stacked directly
over the ATM sublayer. The ifTable is applied to the AAL5 sublayer
as defined in Section 8.3.
___________________________
| |
| ============= |
| | AAL5 | |
| | Entity | |
| ============= |
| | ATM | |
| | Entity | |
| ============= |
|___________|_____________|
|
__|__ ATM UNI
|
|
v
Figure 6 : Model of an AAL5 Entity in a Host
__________________
| |
| AAL5 |
|________________|
| |
| ATM Layer |
|________________|
| |
| Physical Layer|
|________________|
Ahmed & Tesink [Page 12]
RFC 1695 ATM Management Objects August 1994
Figure 7 : AAL5 Entity's Interface Stack in a Host
8.3. Support of AAL5 by ifTable
The AAL5 entity in an ATM device (e.g., switch or host) is managed
using the ifTable. There are additional counters specified for AAL5
than those specified in the ATM B-ICI document [10]. Specific
interpretations of ifTable for the AAL5 CPCS layer are as follows.
Object Use for AAL5 CPCS layer entity
====== ==============================
ifIndex Each AAL5 entity is represented by an ifEntry.
ifDescr Description of the AAL5 entity.
ifType The value that is allocated for AAL5 is 49.
ifMtu Set to the largest PDU size for the
AAL5 CPCS layer that can be processed
by the AAL5 entity.
ifSpeed Set to 0.
ifPhysAddress An octet string of zero length.
ifAdminStatus See [5].
ifOperStatus Assumes the value down(2) if the AAL5 or
any layer below that layer is down.
ifLastChange See [5].
ifInOctets The number of received AAL5 CPCS PDU octets.
ifOutOctets The number of AAL5 CPCS PDU octets
transmitted.
ifInUcastPkts The number of received AAL5 CPCS PDUs passed
to a higher-layer.
ifOutUcastPkts The number of AAL5 CPCS PDUs received from a
higher-layer for transmission.
[Note: The number of AAL5 PDUs actually
transmitted is the number received from a
higher-layer for transmission minus any which
are counted by ifOutErrors and ifOutDiscards.]
Ahmed & Tesink [Page 13]
RFC 1695 ATM Management Objects August 1994
ifInErrors Number of errored AAL5 CPCS PDUs received.
The types of errors counted include CRC-32 errors,
SAR time-out errors, and oversized SDU errors.
ifInUnknownProtos Set to 0.
ifInDiscards Number of received AAL5 CPCS PDUs discarded.
Possible reason may be input buffer overflow.
ifOutErrors Number of AAL5 CPCS PDUs that could not
be transmitted due to errors.
ifOutDiscards Number of AAL5 CPCS PDUs received for
transmission that are discarded.
Possible reason may be output buffer
overflow.
ifInMulticastPkts Set to 0.
ifInBroadcastPkts Set to 0.
ifOutMulticastPkts Set to 0.
ifOutBroadcastPkts Set to 0.
ifName Textual name (unique on this system) of the
AAL5 entity or an octet string of zero length.
ifHighSpeed Set to 0.
ifConnectorPresent Set to false (2).
ifPromiscuousMode Set to false(2).
ifLinkUpDownTrapEnable Default is disabled (2).
8.4. Support of Proprietary Virtual Interface by ifTable
Specific interpretations of ifTable for the proprietary virtual,
internal interface associated with an AAL5 entity in an ATM switch
are as follows.
Object Use for proprietary virtual, internal interface
associated with AAL entities
====== ===============================================
ifIndex Each proprietary virtual, internal interface
associated with AAL entities is represented by an
Ahmed & Tesink [Page 14]
RFC 1695 ATM Management Objects August 1994
ifEntry.
ifDescr Description of the proprietary virtual, internal
interface associated with AAL entities.
ifType The value that is allocated for proprietary
virtual, internal interface is 53.
ifSpeed See [5]. Set to 0 if the speed is not
known.
ifPhysAddress See [5]. An octet string of zero length
if no address is used for this interface.
ifAdminStatus See [5].
ifOperStatus See [5].
ifLastChange See [5].
ifName Textual name (unique on this system) of the
interface or an octet string of zero length.
ifHighSpeed See [5]. Set to 0 if the speed is not known.
ifConnectorPresent Set to false (2).
ifLinkUpDownTrapEnable Default is disabled (2).
8.5. AAL5 Connection Performance Statistics Group
An AAL5 connection table is used to provide AAL5 performance
information for each AAL5 virtual connection that is terminated at
the AAL5 entity contained within an ATM switch or host.
9. ILMI MIB and the ATM Managed Objects
The ILMI MIB is specified by the ATM Forum in UNI specification [9],
to manage local ATM UNIs. The support of the ATM management
functions by the ILMI MIB and those contained in this memo are
compared in Table 1. In this table, "yes" in the "ILMI MIB" column
indicates that the management functions are supported by the ILMI
MIB. The MIB groups in the "This memo" column are the groups listed
in Section 5.2.
For that subset of management information which the ILMI MIB and this
memo have in common, every effort has been made to retain identical
semantics and syntax, even though the MIB objects are identified
Ahmed & Tesink [Page 15]
RFC 1695 ATM Management Objects August 1994
using different OBJECT IDENTIFIERs.
Table 1 - Structuring of ATM Managed Objects
______________________________________________________________
| |This |ILMI|
ATM Mgmt.Inf. |ATM Managed Objects |memo |MIB |
______________|_________________________________|_______|____|
Local Interface Information:
_____________________________________________________________
ATM interface:| (1) port identifier |ATM MIB| |
physical layer| (2) physical transmission types | gr.1*|yes*|
configuration | (3) operational status |MIB II | |
| (4) administrative status | | |
| (5) last change status | | |
_____________________________________________________________
ATM interface:| (1) active VPI/VCI fields |ATM MIB| |
cell layer | (2) maximum number of VPCs/VCCs | gr.1 |yes |
configuration | (3) configured VPCs/VCCs | | ** |
| (4) ILMI VPI/VCI values | | |
| (5) ATM address type | | |
| (6) ATM administrative address | | |
_____________________________________________________________
ATM interface:|(1) received/transmitted cells | | |
cell layer |(2) cells with HEC error |MIB II |yes |
performance |(3) cell header validation errors| | |
_____________________________________________________________
ATM interface:|(1)DS3 PLCP severely errored |ATM MIB| |
PLCP & TC | framing seconds | gr.2,3| |
layer |(2)DS3 PLCP unavailable seconds | |no |
performance |(3)DS3 PLCP alarm state | | |
|(4)out of cell delineation events| | |
|(5)TC alarm state | | |
_____________________________________________________________
VP/VC link: |(1)VPI or VPI/VCI value |ATM MIB| |
configuration |(2)VCL or VPL operational status | gr. 4|yes |
|(3)VCL/VPL administrative status | |*** |
|(4)VCL/VPL last change status | | |
|(5)transmit/receive traffic/QoS | | |
| parameters | | |
|(6)AAL type | | |
|(7)transmit/receive AAL5 SDU size| | |
|(8)AAL5 encapsulation type | | |
_____________________________________________________________
Ahmed & Tesink [Page 16]
RFC 1695 ATM Management Objects August 1994
_____________________________________________________________
VP/VC |(1)cross-connect identifier | | |
Cross-connect:|(2)port identifier of one | | |
configuration | end | | |
|(3)port identifier of the other |ATM MIB| |
| end | gr. 5|no |
|(4)VPI or VPI/VCI value | | |
| of one end | | |
|(5)VPI or VPI/VCI value of | | |
| the other end | | |
|(6)VC/VP cross-connect | | |
| operational status | | |
|(7)VC/VP cross-connect | | |
| administrative status | | |
|(8)VC/VP last change status | | |
_____________________________________________________________
VCC AAL5 CPCS |(1)PDUs discarded for CRC errors |ATM MIB| |
layer: |(2)PDUs discarded due to | gr.6 | |
performance | reassembly time out | |no |
|(3)PDUs discarded due to large | | |
| SDUs | | |
_____________________________________________________________
AAL5 entity: |(1)received/transmitted PDUs | | |
|(2)PDUs discarded due to | | |
| protocol errors |MIB II |no |
|(3)a set of configuration/state | | |
| parameters | | |
_____________________________________________________________
*The operational, administrative, and last change status of
the ATM interface and the physical transmission type shall be
supported by the interface table in MIB II (RFC 1213, RFC
1573). ILMI does not contain the administrative and last
change status of the ATM interface.
** The ILMI MIB does not contain information on the ATM
address type and the ATM administrative address assigned at
the ATM interface.
***The ILMI MIB contains local and end-to-end operational
status of the VPC/VCC segment. However, it does not contain
the VPC/VCC administrative and last change status and the VCC
AAL information.
Ahmed & Tesink [Page 17]
RFC 1695 ATM Management Objects August 1994
10. Definitions
ATM-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY,
Counter32, Integer32, IpAddress
FROM SNMPv2-SMI
TEXTUAL-CONVENTION, DisplayString,
TimeStamp, RowStatus
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF
ifIndex, mib-2
FROM RFC1213-MIB;
atmMIB MODULE-IDENTITY
LAST-UPDATED "9406072245Z"
ORGANIZATION "IETF AToM MIB Working Group"
CONTACT-INFO
" Masuma Ahmed
Postal: Bellcore
331 Newman Springs Road
Red Bank, NJ 07701
US
Tel: +1 908 758 2515
Fax: +1 908 758 4131
E-mail: mxa@mail.bellcore.com
Kaj Tesink
Postal: Bellcore
331 Newman Springs Road
Red Bank, NJ 07701
US
Tel: +1 908 758 5254
Fax: +1 908 758 4196
E-mail: kaj@cc.bellcore.com"
DESCRIPTION
"This is the MIB Module for ATM and AAL5-related
objects for managing ATM interfaces, ATM virtual
links, ATM cross-connects, AAL5 entities, and
and AAL5 connections."
::= { mib-2 37 }
atmMIBObjects OBJECT IDENTIFIER ::= {atmMIB 1}
-- This ATM MIB Module consists of the following groups:
Ahmed & Tesink [Page 18]
RFC 1695 ATM Management Objects August 1994
-- (1) ATM Interface configuration group
-- (2) ATM Interface DS3 PLCP group
-- (3) ATM Interface TC Sublayer group
-- (4) ATM Interface VPL configuration group
-- (5) ATM Interface VCL configuration group
-- (6) ATM VP Cross Connect group
-- (7) ATM VC Cross Connect group
-- (8) ATM Interface AAL5 VCC performance statistics
-- group
IfIndex ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The value of this object identifies the interface
for which the entry contains management
information. The value of this object for a
particular interface has the same value as the
ifIndex object, defined in RFC 1213, for the same
interface."
SYNTAX Integer32
AtmTrafficDescrParamIndex ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The value of this object identifies the row
in the atmTrafficDescrParamTable."
SYNTAX Integer32
atmTrafficDescriptorTypes OBJECT IDENTIFIER ::=
{atmMIBObjects 1}
-- The following values are defined for use as
-- possible values of the ATM traffic descriptor type.
-- ATM Forum specified seven types of ATM traffic
-- descriptors.
atmNoTrafficDescriptor OBJECT-IDENTITY
STATUS current
DESCRIPTION
"This identifies the no ATM traffic descriptor
type. Parameters 1, 2, 3, 4, and 5 are not used.
This traffic descriptor type can be used for
best effort traffic."
::= { atmTrafficDescriptorTypes 1}
atmNoClpNoScr OBJECT-IDENTITY
Ahmed & Tesink [Page 19]
RFC 1695 ATM Management Objects August 1994
STATUS current
DESCRIPTION
"This traffic descriptor is for no CLP and
no Sustained Cell Rate. The use of the
parameter vector for this type:
Parameter 1: CLP=0+1 peak cell rate in
cells per second
Parameter 2: not used
Parameter 3: not used
Parameter 4: not used
Parameter 5: not used.
This traffic descriptor type can be used
for best effort traffic."
::= { atmTrafficDescriptorTypes 2}
atmClpNoTaggingNoScr OBJECT-IDENTITY
STATUS current
DESCRIPTION
"This traffic descriptor is for no CLP without
tagging and no Sustained Cell Rate. The use
of the parameter vector for this type:
Parameter 1: CLP=0+1 peak cell rate in
cells per second
Parameter 2: CLP=0 peak cell rate in
cells per second
Parameter 3: not used
Parameter 4: not used
Parameter 5: not used."
::= { atmTrafficDescriptorTypes 3}
atmClpTaggingNoScr OBJECT-IDENTITY
STATUS current
DESCRIPTION
"This traffic descriptor is for CLP with
tagging and no Sustained Cell Rate. The
use of the parameter vector for this type:
Parameter 1: CLP=0+1 peak cell rate in
cells per second
Parameter 2: CLP=0 peak cell rate in
cells per second with excess
traffic tagged as CLP=1
Parameter 3: not used
Parameter 4: not used
Parameter 5: not used."
::= { atmTrafficDescriptorTypes 4}
atmNoClpScr OBJECT-IDENTITY
STATUS current
Ahmed & Tesink [Page 20]
RFC 1695 ATM Management Objects August 1994
DESCRIPTION
"This traffic descriptor is for no CLP
with Sustained Cell Rate. The
use of the parameter vector for this type:
Parameter 1: CLP=0+1 peak cell rate in
cells per second
Parameter 2: CLP=0+1 sustained cell rate in
cells per second
Parameter 3: CLP=0+1 maximum burst size
in cells
Parameter 4: not used
Parameter 5: not used."
::= { atmTrafficDescriptorTypes 5}
atmClpNoTaggingScr OBJECT-IDENTITY
STATUS current
DESCRIPTION
"This traffic descriptor is for CLP
with Sustained Cell Rate and no tagging.
The use of the parameter vector for this type:
Parameter 1: CLP=0+1 peak cell rate in
cells per second
Parameter 2: CLP=0 sustained cell rate in
cells per second
Parameter 3: CLP=0 maximum burst size in cells
Parameter 4: not used
Parameter 5: not used."
::= { atmTrafficDescriptorTypes 6}
atmClpTaggingScr OBJECT-IDENTITY
STATUS current
DESCRIPTION
"This traffic descriptor is for CLP
with tagging and Sustained Cell Rate.
The use of the parameter vector for this type:
Parameter 1: CLP=0+1 peak cell rate in
cells per second
Parameter 2: CLP=0 sustained cell rate in
cells per second with excess
traffic tagged as CLP=1
Parameter 3: CLP=0 maximum burst size in cells
Parameter 4: not used
Parameter 5: not used."
::= { atmTrafficDescriptorTypes 7}
-- ATM Interface Configuration Parameters Group
Ahmed & Tesink [Page 21]
RFC 1695 ATM Management Objects August 1994
-- This group contains ATM specific
-- configuration information associated with
-- an ATM interface beyond those
-- supported using the ifTable.
atmInterfaceConfTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmInterfaceConfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains ATM local interface
configuration parameters, one entry per ATM
interface port."
::= { atmMIBObjects 2 }
atmInterfaceConfEntry OBJECT-TYPE
SYNTAX AtmInterfaceConfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This list contains ATM interface configuration
parameters and state variables."
INDEX { ifIndex }
::= { atmInterfaceConfTable 1}
AtmInterfaceConfEntry ::= SEQUENCE {
atmInterfaceMaxVpcs INTEGER,
atmInterfaceMaxVccs INTEGER,
atmInterfaceConfVpcs INTEGER,
atmInterfaceConfVccs INTEGER,
atmInterfaceMaxActiveVpiBits INTEGER,
atmInterfaceMaxActiveVciBits INTEGER,
atmInterfaceIlmiVpi INTEGER,
atmInterfaceIlmiVci INTEGER,
atmInterfaceAddressType INTEGER,
atmInterfaceAdminAddress OCTET STRING,
atmInterfaceMyNeighborIpAddress IpAddress,
atmInterfaceMyNeighborIfName DisplayString
}
atmInterfaceMaxVpcs OBJECT-TYPE
SYNTAX INTEGER (0..4096)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The maximum number of VPCs (PVCs and SVCs)
supported at this ATM interface. At the ATM UNI,
Ahmed & Tesink [Page 22]
RFC 1695 ATM Management Objects August 1994
the maximum number of VPCs (PVCs and SVCs)
ranges from 0 to 256 only."
::= { atmInterfaceConfEntry 1}
atmInterfaceMaxVccs OBJECT-TYPE
SYNTAX INTEGER (0..65536)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The maximum number of VCCs (PVCs and SVCs)
supported at this ATM interface."
::= { atmInterfaceConfEntry 2}
atmInterfaceConfVpcs OBJECT-TYPE
SYNTAX INTEGER (0..4096)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of VPCs (PVCs and SVCs)
configured for use at this ATM interface.
At the ATM UNI, the configured number of
VPCs (PVCs and SVCs) can range from
0 to 256 only."
::= { atmInterfaceConfEntry 3}
atmInterfaceConfVccs OBJECT-TYPE
SYNTAX INTEGER (0..65536)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of VCCs (PVCs and SVCs)
configured for use at the ATM interface."
::= { atmInterfaceConfEntry 4}
atmInterfaceMaxActiveVpiBits OBJECT-TYPE
SYNTAX INTEGER (0..12)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The maximum number of active VPI bits
configured for use at the ATM interface.
At the ATM UNI, the maximum number of active
VPI bits configured for use ranges from
0 to 8 only."
::= { atmInterfaceConfEntry 5}
atmInterfaceMaxActiveVciBits OBJECT-TYPE
SYNTAX INTEGER (0..16)
Ahmed & Tesink [Page 23]
RFC 1695 ATM Management Objects August 1994
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The maximum number of active VCI bits
configured for use at this ATM interface."
::= { atmInterfaceConfEntry 6}
atmInterfaceIlmiVpi OBJECT-TYPE
SYNTAX INTEGER (0..255)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The VPI value of the VCC supporting
the ILMI at this ATM interface. If the values of
atmInterfaceIlmiVpi and atmInterfaceIlmiVci are
both equal to zero then the ILMI is not
supported at this ATM interface."
DEFVAL { 0 }
::= { atmInterfaceConfEntry 7}
atmInterfaceIlmiVci OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The VCI value of the VCC supporting
the ILMI at this ATM interface. If the values of
atmInterfaceIlmiVpi and atmInterfaceIlmiVci are
both equal to zero then the ILMI is not
supported at this ATM interface."
DEFVAL { 16 }
::= { atmInterfaceConfEntry 8}
atmInterfaceAddressType OBJECT-TYPE
SYNTAX INTEGER {
private(1),
nsapE164(2),
nativeE164(3),
other(4)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of primary ATM address configured
for use at this ATM interface."
::= { atmInterfaceConfEntry 9 }
atmInterfaceAdminAddress OBJECT-TYPE
Ahmed & Tesink [Page 24]
RFC 1695 ATM Management Objects August 1994
SYNTAX OCTET STRING (SIZE(0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An address assigned for administrative purposes,
for example, an address associated with the
service provider side of a public network UNI.
If this interface has no assigned administrative
address, or when the address used for
administrative purposes is the same as that used
for ifPhysAddress, then this is an octet string of
zero length."
::= { atmInterfaceConfEntry 10 }
atmInterfaceMyNeighborIpAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The IP address of the neighbor system connected to
the far end of this interface, to which a Network
Management Station can send SNMP messages, as IP
datagrams sent to UDP port 161, in order to access
network management information concerning the
operation of that system. Note that the value
of this object may be obtained in different ways,
e.g., by manual configuration, or through ILMI
interaction with the neighbor system."
::= { atmInterfaceConfEntry 11 }
atmInterfaceMyNeighborIfName OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The textual name of the interface on the neighbor
system on the far end of this interface, and to
which this interface connects. If the neighbor
system is manageable through SNMP and supports
the object ifName, the value of this object must
be identical with that of ifName for the ifEntry
of the lowest level physical interface
for this port. If this interface does not have a
textual name, the value of this object is a zero
length string. Note that the value of this object
may be obtained in different ways, e.g., by manual
configuration, or through ILMI interaction with
the neighbor system."
Ahmed & Tesink [Page 25]
RFC 1695 ATM Management Objects August 1994
::= { atmInterfaceConfEntry 12 }
-- The ATM Interface DS3 PLCP Group
-- This group contains the DS3 PLCP configuration and
-- state parameters of those ATM interfaces
-- which use DS3 PLCP for carrying ATM cells over DS3.
atmInterfaceDs3PlcpTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmInterfaceDs3PlcpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains ATM interface DS3 PLCP
parameters and state variables, one entry per
ATM interface port."
::= { atmMIBObjects 3}
atmInterfaceDs3PlcpEntry OBJECT-TYPE
SYNTAX AtmInterfaceDs3PlcpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This list contains DS3 PLCP parameters and
state variables at the ATM interface."
INDEX {ifIndex }
::= { atmInterfaceDs3PlcpTable 1}
AtmInterfaceDs3PlcpEntry ::= SEQUENCE {
atmInterfaceDs3PlcpSEFSs Counter32,
atmInterfaceDs3PlcpAlarmState INTEGER,
atmInterfaceDs3PlcpUASs Counter32
}
atmInterfaceDs3PlcpSEFSs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of DS3 PLCP Severely Errored Framing
Second (SEFS). Each SEFS represents a
one-second interval which contains
one or more SEF event."
::= { atmInterfaceDs3PlcpEntry 1}
atmInterfaceDs3PlcpAlarmState OBJECT-TYPE
Ahmed & Tesink [Page 26]
RFC 1695 ATM Management Objects August 1994
SYNTAX INTEGER {
noAlarm(1),
receivedFarEndAlarm(2),
incomingLOF(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This variable indicates if there is an
alarm present for the DS3 PLCP. The value
receivedFarEndAlarm means that the DS3 PLCP
has received an incoming Yellow
Signal, the value incomingLOF means that
the DS3 PLCP has declared a loss of frame (LOF)
failure condition, and the value noAlarm
means that there are no alarms present.
Transition from the failure to the no alarm state
occurs when no defects (e.g., LOF) are received
for more than 10 seconds."
::= { atmInterfaceDs3PlcpEntry 2}
atmInterfaceDs3PlcpUASs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The counter associated with the number of
Unavailable Seconds encountered by the PLCP."
::= { atmInterfaceDs3PlcpEntry 3}
-- The ATM Interface TC Sublayer Group
-- This group contains TC sublayer configuration and
-- state parameters of those ATM interfaces
-- which use TC sublayer for carrying ATM cells over
-- SONET or DS3.
atmInterfaceTCTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmInterfaceTCEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains ATM interface TC
Sublayer parameters and state variables,
one entry per ATM interface port."
::= { atmMIBObjects 4}
Ahmed & Tesink [Page 27]
RFC 1695 ATM Management Objects August 1994
atmInterfaceTCEntry OBJECT-TYPE
SYNTAX AtmInterfaceTCEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This list contains TC Sublayer parameters
and state variables at the ATM interface."
INDEX {ifIndex }
::= { atmInterfaceTCTable 1}
AtmInterfaceTCEntry ::= SEQUENCE {
atmInterfaceOCDEvents Counter32,
atmInterfaceTCAlarmState INTEGER
}
atmInterfaceOCDEvents OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the Out of Cell
Delineation (OCD) events occur. If seven
consecutive ATM cells have Header Error
Control (HEC) violations, an OCD event occurs.
A high number of OCD events may indicate a
problem with the TC Sublayer."
::= { atmInterfaceTCEntry 1}
atmInterfaceTCAlarmState OBJECT-TYPE
SYNTAX INTEGER {
noAlarm(1),
lcdFailure(2)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This variable indicates if there is an
alarm present for the TC Sublayer. The value
lcdFailure indicates that a Loss of
Cell Delineation (LCD) failure state has been
declared for the TC Sublayer. Transition from
failure to the no alarm state occurs
when 6 consecutive ATM cells
are received with valid HEC, followed by
about 10 seconds of acceptable working signal."
::= { atmInterfaceTCEntry 2}
Ahmed & Tesink [Page 28]
RFC 1695 ATM Management Objects August 1994
-- ATM Traffic Descriptor Parameter Group
-- This group contains a set of self-consistent
-- ATM traffic parameters including the
-- ATM traffic QoS Class.
-- The ATM virtual link tables (i.e., VPL and VCL tables)
-- will use this ATM Traffic Descriptor table
-- to assign traffic parameters and QoS Class
-- to the receive and transmit directions of
-- the ATM virtual links (i.e., VPLs and VCLs).
-- The ATM VPL or VCL table will indicate a row
-- in the atmTrafficDescrParamTable
-- using its atmTrafficDescrParamIndex value.
-- The management application can then compare a set of
-- ATM traffic parameters with a single value.
-- If no suitable row(s) in the atmTrafficDescrParamTable
-- exists, the manager must create a new row(s) in this
-- table. If such a row is created, agent checks the
-- sanity of that set of ATM traffic parameter values.
-- When creating a new row, the parameter values
-- will be checked for self-consistency.
-- Predefined/template rows may be supported.
-- A row in the atmTrafficDescrParamTable is deleted
-- by setting the atmTrafficDescrRowStatus to destroy(6).
-- The agent will check whether this row is still in use
-- by any entry of the atmVplTable or atmVclTable.
-- The agent denies the request if the row is still in
-- use.
-- The ATM Traffic Descriptor Parameter Table
atmTrafficDescrParamTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmTrafficDescrParamEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains information on ATM traffic
descriptor type and the associated parameters."
::= { atmMIBObjects 5}
atmTrafficDescrParamEntry OBJECT-TYPE
SYNTAX AtmTrafficDescrParamEntry
MAX-ACCESS not-accessible
Ahmed & Tesink [Page 29]
RFC 1695 ATM Management Objects August 1994
STATUS current
DESCRIPTION
"This list contains ATM traffic descriptor
type and the associated parameters."
INDEX {atmTrafficDescrParamIndex}
::= { atmTrafficDescrParamTable 1}
AtmTrafficDescrParamEntry ::= SEQUENCE {
atmTrafficDescrParamIndex AtmTrafficDescrParamIndex,
atmTrafficDescrType OBJECT IDENTIFIER,
atmTrafficDescrParam1 Integer32,
atmTrafficDescrParam2 Integer32,
atmTrafficDescrParam3 Integer32,
atmTrafficDescrParam4 Integer32,
atmTrafficDescrParam5 Integer32,
atmTrafficQoSClass INTEGER,
atmTrafficDescrRowStatus RowStatus
}
atmTrafficDescrParamIndex OBJECT-TYPE
SYNTAX AtmTrafficDescrParamIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object is used by the virtual link
table (i.e., VPL or VCL table)
to identify the row of this table."
::= { atmTrafficDescrParamEntry 1}
atmTrafficDescrType OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the type
of ATM traffic descriptor.
The type may indicate no traffic descriptor or
traffic descriptor with one or more parameters.
These parameters are specified as a parameter
vector, in the corresponding instances of the
objects:
atmTrafficDescrParam1
atmTrafficDescrParam2
atmTrafficDescrParam3
atmTrafficDescrParam4
atmTrafficDescrParam5."
DEFVAL { atmNoTrafficDescriptor }
::= { atmTrafficDescrParamEntry 2}
Ahmed & Tesink [Page 30]
RFC 1695 ATM Management Objects August 1994
atmTrafficDescrParam1 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The first parameter of the ATM traffic descriptor
used according to the value of
atmTrafficDescrType."
DEFVAL { 0 }
::= { atmTrafficDescrParamEntry 3}
atmTrafficDescrParam2 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The second parameter of the ATM traffic descriptor
used according to the value of
atmTrafficDescrType."
DEFVAL { 0 }
::= { atmTrafficDescrParamEntry 4}
atmTrafficDescrParam3 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The third parameter of the ATM traffic descriptor
used according to the value of
atmTrafficDescrType."
DEFVAL { 0 }
::= { atmTrafficDescrParamEntry 5}
atmTrafficDescrParam4 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The fourth parameter of the ATM traffic descriptor
used according to the value of
atmTrafficDescrType."
DEFVAL { 0 }
::= { atmTrafficDescrParamEntry 6}
atmTrafficDescrParam5 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
Ahmed & Tesink [Page 31]
RFC 1695 ATM Management Objects August 1994
DESCRIPTION
"The fifth parameter of the ATM traffic descriptor
used according to the value of
atmTrafficDescrType."
DEFVAL { 0 }
::= { atmTrafficDescrParamEntry 7}
atmTrafficQoSClass OBJECT-TYPE
SYNTAX INTEGER (0..255)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the QoS Class.
Four Service classes have been
specified in the ATM Forum UNI Specification:
Service Class A: Constant bit rate video and
Circuit emulation
Service Class B: Variable bit rate video/audio
Service Class C: Connection-oriented data
Service Class D: Connectionless data
Four QoS classes numbered 1, 2, 3, and 4 have
been specified with the aim to support service
classes A, B, C, and D respectively.
An unspecified QoS Class numbered `0' is used
for best effort traffic."
DEFVAL { 0 }
::= { atmTrafficDescrParamEntry 8}
atmTrafficDescrRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is used to create
a new row or modify or delete an
existing row in this table."
DEFVAL { active }
::= {atmTrafficDescrParamEntry 9}
-- ATM Interface Virtual Path Link (VPL) Group
-- This group contains configuration and state
-- information of a bi-directional Virtual Path Link
-- (VPL)
-- This table can be used to create, delete or modify
Ahmed & Tesink [Page 32]
RFC 1695 ATM Management Objects August 1994
-- a VPL that is terminated in an ATM host or switch.
-- This table can also be used to create, delete or
-- modify a VPL which is cross-connected to another
-- VPL.
-- In the example below, the traffic flows on the receive
-- and transmit directions of the VPLs are characterized
-- by atmVplReceiveTrafficDescrIndex and
-- atmVplTransmitTrafficDescrIndex respectively.
-- The cross-connected VPLs are identified by
-- atmVplCrossConnectIdentifier.
-- ________________________________
-- | |
-- VPL | ATM Host, Switch, or Network | VPL
-- receive | | receive
-- ========> X X <=======
-- <======== X X ========>
-- transmit | | transmit
-- |______________________________|
-- The ATM Interface VPL Table
atmVplTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmVplEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Virtual Path Link (VPL) table. A
bi-directional VPL is modeled as one entry
in this table."
::= { atmMIBObjects 6}
atmVplEntry OBJECT-TYPE
SYNTAX AtmVplEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the VPL table. This entry is
used to model a bi-directional VPL.
To create a VPL at an ATM interface,
either of the following procedures are used:
Ahmed & Tesink [Page 33]
RFC 1695 ATM Management Objects August 1994
Negotiated VPL establishment
(1) The management application creates
a VPL entry in the atmVplTable
by setting atmVplRowStatus to createAndWait(5).
This may fail for the following reasons:
- The selected VPI value is unavailable,
- The selected VPI value is in use.
Otherwise, the agent creates a row and
reserves the VPI value on that port.
(2) The manager selects an existing row(s) in the
atmTrafficDescrParamTable,
thereby, selecting a set of self-consistent
ATM traffic parameters and the QoS Class
for receive and transmit directions of the VPL.
(2a) If no suitable row(s) in the
atmTrafficDescrParamTable exists,
the manager must create a new row(s)
in that table.
(2b) The manager characterizes the VPL's traffic
parameters through setting the
atmVplReceiveTrafficDescrIndex and the
atmVplTransmitTrafficDescrIndex values
in the VPL table, which point to the rows
containing desired ATM traffic parameter values
in the atmTrafficDescrParamTable. The agent
will check the availability of resources and
may refuse the request.
(3) The manager activates the VPL by setting the
the atmVplRowStatus to active(1).
If this set is successful, the agent has
reserved the resources to satisfy the requested
traffic parameter values and the QoS Class
for that VPL.
(4) If the VPL terminates a VPC in the ATM host
or switch, the manager turns on the
atmVplAdminStatus to up(1) to turn the VPL
traffic flow on. Otherwise, the
atmVpCrossConnectTable must be used
to cross-connect the VPL to another VPL(s)
in an ATM switch or network.
One-Shot VPL Establishment
Ahmed & Tesink [Page 34]
RFC 1695 ATM Management Objects August 1994
A VPL may also be established in one step by a
set-request with all necessary VPL parameter
values and atmVplRowStatus set to createAndGo(4).
In contrast to the negotiated VPL establishment
which allows for detailed error checking
(i.e., set errors are explicitly linked to
particular resource acquisition failures),
the one-shot VPL establishment
performs the setup on one operation but
does not have the advantage of step-wise
error checking.
VPL Retirement
A VPL is released by setting atmVplRowStatus to
destroy(6), and the agent may release all
associated resources."
INDEX {ifIndex, atmVplVpi }
::= { atmVplTable 1}
AtmVplEntry ::= SEQUENCE {
atmVplVpi INTEGER,
atmVplAdminStatus INTEGER,
atmVplOperStatus INTEGER,
atmVplLastChange TimeStamp,
atmVplReceiveTrafficDescrIndex
AtmTrafficDescrParamIndex,
atmVplTransmitTrafficDescrIndex
AtmTrafficDescrParamIndex,
atmVplCrossConnectIdentifier INTEGER,
atmVplRowStatus RowStatus
}
atmVplVpi OBJECT-TYPE
SYNTAX INTEGER (1..4095)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The VPI value of the VPL.
Note that the VPI=0 is not used
for a VPL not associated with a VCL.
The maximum VPI value cannot
exceed the value allowable by the
atmInterfaceMaxVpiBits."
::= { atmVplEntry 1}
Ahmed & Tesink [Page 35]
RFC 1695 ATM Management Objects August 1994
atmVplAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is implemented only for a VPL which
terminates a VPC (i.e.,
one which is NOT cross-connected to other VPLs).
Its value specifies the desired administrative
state of the VPL. The up and down states indicate
that the traffic flow is enabled and disabled
respectively for this VPL."
DEFVAL { down }
::= { atmVplEntry 2}
atmVplOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2),
unknown(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates the current operational
status of the VPL. The up and down states
indicate that the VPL is currently
operational, or not operational, respectively.
The unknown state indicates that the status of
this VPL cannot be determined."
::= { atmVplEntry 3}
atmVplLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of MIB II's sysUpTime object
at the time this VPL entered its current
operational state. If the current state was
entered prior to the last re-initialization of the
agent, then this object contains a zero value."
::= { atmVplEntry 4 }
Ahmed & Tesink [Page 36]
RFC 1695 ATM Management Objects August 1994
atmVplReceiveTrafficDescrIndex OBJECT-TYPE
SYNTAX AtmTrafficDescrParamIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the row
in the atmTrafficDescrParamTable which
applies to the receive direction of the VPL."
::= { atmVplEntry 5}
atmVplTransmitTrafficDescrIndex OBJECT-TYPE
SYNTAX AtmTrafficDescrParamIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the row
in the atmTrafficDescrParamTable which
applies to the transmit direction of the VPL."
::= { atmVplEntry 6}
atmVplCrossConnectIdentifier OBJECT-TYPE
SYNTAX INTEGER (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object is implemented only for a VPL
which is cross-connected to other VPLs
that belong to the same VPC. All such
associated VPLs have the same value of this
object, and all their cross-connections are
identified by entries in the
atmVpCrossConnectTable for which
atmVpCrossConnectIndex has the same value.
The value of this object is initialized by the
agent after the associated entries in the
atmVpCrossConnectTable have been created."
::= {atmVplEntry 7}
atmVplRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is used to create, delete
or modify a row in this table.
To create a new VCL, this object is
initially set to 'createAndWait' or
'createAndGo'. This object must not be
Ahmed & Tesink [Page 37]
RFC 1695 ATM Management Objects August 1994
set to 'active' unless the following columnar
objects exist in this row:
atmVplReceiveTrafficDescrIndex and
atmVplTransmitTrafficDescrIndex."
DEFVAL { active }
::= {atmVplEntry 8}
-- ATM Interface Virtual Channel Link (VCL) Group
-- This group contains configuration and state
-- information of a bi-directional Virtual Channel
-- Link (VCL) at an ATM interface.
-- This table can be used to create, delete or modify
-- a VCL that is terminated in an ATM host or switch.
-- This table can also be
-- used to create, delete or modify a VCL that is
-- cross-connected to another VCL.
-- The ATM Interface VCL Table
atmVclTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmVclEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Virtual Channel Link (VCL) table. A
bi-directional VCL is modeled as one entry
in this table."
::= { atmMIBObjects 7}
atmVclEntry OBJECT-TYPE
SYNTAX AtmVclEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the VCL table. This entry is
used to model a bi-directional VCL.
To create a VCL at an ATM interface,
either of the following procedures are used:
Negotiated VCL establishment
(1) The management application creates
a VCL entry in the atmVclTable
Ahmed & Tesink [Page 38]
RFC 1695 ATM Management Objects August 1994
by setting atmVclRowStatus to createAndWait(5).
This may fail for the following reasons:
- The selected VPI/VCI values are unavailable,
- The selected VPI/VCI values are in use.
Otherwise, the agent creates a row and
reserves the VPI/VCI values on that port.
(2) The manager selects an existing row(s) in the
atmTrafficDescrParamTable,
thereby, selecting a set of self-consistent
ATM traffic parameters and the QoS Class
for receive and transmit directions of the VCL.
(2a) If no suitable row(s) in the
atmTrafficDescrParamTable exists,
the manager must create a new row(s)
in that table.
(2b) The manager characterizes the VCL's traffic
parameters through setting the
atmVclReceiveTrafficDescrIndex and the
atmVclTransmitTrafficDescrIndex values
in the VCL table, which point to the rows
containing desired ATM traffic parameter values
in the atmTrafficDescrParamTable. The agent
will check the availability of resources and
may refuse the request.
(3) The manager activates the VCL by setting the
the atmVclRowStatus to active(1).
If this set is successful, the agent has
reserved the resources to satisfy the requested
traffic parameter values and the QoS Class
for that VCL.
(4) If the VCL terminates a VCC in the ATM host
or switch, the manager turns on the
atmVclAdminStatus to up(1) to turn the VCL
traffic flow on. Otherwise, the
atmVcCrossConnectTable must be used
to cross-connect the VCL to another VCL(s)
in an ATM switch or network.
One-Shot VCL Establishment
A VCL may also be established in one step by a
set-request with all necessary VCL parameter
values and atmVclRowStatus set to createAndGo(4).
Ahmed & Tesink [Page 39]
RFC 1695 ATM Management Objects August 1994
In contrast to the negotiated VCL establishment
which allows for detailed error checking
(i.e., set errors are explicitly linked to
particular resource acquisition failures),
the one-shot VCL establishment
performs the setup on one operation but
does not have the advantage of step-wise
error checking.
VCL Retirement
A VCL is released by setting atmVclRowStatus to
destroy(6), and the agent may release all
associated resources."
INDEX {ifIndex, atmVclVpi, atmVclVci }
::= { atmVclTable 1}
AtmVclEntry ::= SEQUENCE {
atmVclVpi INTEGER,
atmVclVci INTEGER,
atmVclAdminStatus INTEGER,
atmVclOperStatus INTEGER,
atmVclLastChange TimeStamp,
atmVclReceiveTrafficDescrIndex
AtmTrafficDescrParamIndex,
atmVclTransmitTrafficDescrIndex
AtmTrafficDescrParamIndex,
atmVccAalType INTEGER,
atmVccAal5CpcsTransmitSduSize INTEGER,
atmVccAal5CpcsReceiveSduSize INTEGER,
atmVccAal5EncapsType INTEGER,
atmVclCrossConnectIdentifier INTEGER,
atmVclRowStatus RowStatus
}
atmVclVpi OBJECT-TYPE
SYNTAX INTEGER (0..4095)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The VPI value of the VCL.
The maximum VPI value cannot
exceed the value allowable by the
atmInterfaceMaxVpiBits."
::= { atmVclEntry 1}
atmVclVci OBJECT-TYPE
SYNTAX INTEGER (0..65535)
Ahmed & Tesink [Page 40]
RFC 1695 ATM Management Objects August 1994
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The VCI value of the VCL.
The maximum VCI value cannot
exceed the value allowable by the
atmInterfaceMaxVciBits."
::= { atmVclEntry 2}
atmVclAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is implemented only for a VCL which
terminates a VCC (i.e.,
one which is NOT cross-connected to other VCLs).
Its value specifies the desired administrative
state of the VCL. The up and down states indicate
that the traffic flow is enabled and disabled
respectively for this VCL."
::= { atmVclEntry 3}
atmVclOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2),
unknown(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates the current operational
status of the VCL. The up and down states
indicate that the VCL is currently
operational, or not operational, respectively.
The unknown state indicates that the status of
this VCL cannot be determined."
::= { atmVclEntry 4}
atmVclLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
Ahmed & Tesink [Page 41]
RFC 1695 ATM Management Objects August 1994
"The value of MIB II's sysUpTime object
at the time this VCL entered its current
operational state. If the current state was
entered prior to the last re-initialization of the
agent, then this object contains a zero value."
::= { atmVclEntry 5 }
atmVclReceiveTrafficDescrIndex OBJECT-TYPE
SYNTAX AtmTrafficDescrParamIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the row
in the ATM Traffic Descriptor Table which
applies to the receive direction of this VCL."
::= { atmVclEntry 6}
atmVclTransmitTrafficDescrIndex OBJECT-TYPE
SYNTAX AtmTrafficDescrParamIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the row
of the ATM Traffic Descriptor Table which applies
to the transmit direction of this VCL."
::= { atmVclEntry 7}
atmVccAalType OBJECT-TYPE
SYNTAX INTEGER {
aal1(1),
aal34(2),
aal5(3),
other(4),
unknown(5)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An instance of this object only exists when the
local VCL end-point is also the VCC end-point,
and AAL is in use.
The type of AAL used on this VCC.
The AAL type includes AAL1, AAL3/4,
and AAL5. The other(4) may be user-defined
AAL type. The unknown type indicates that
the AAL type cannot be determined."
::= { atmVclEntry 8 }
Ahmed & Tesink [Page 42]
RFC 1695 ATM Management Objects August 1994
atmVccAal5CpcsTransmitSduSize OBJECT-TYPE
SYNTAX INTEGER (1..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An instance of this object only exists when the
local VCL end-point is also the VCC end-point,
and AAL5 is in use.
The maximum AAL5 CPCS SDU size in octets that is
supported on the transmit direction of this VCC."
DEFVAL { 9188 }
::= { atmVclEntry 9 }
atmVccAal5CpcsReceiveSduSize OBJECT-TYPE
SYNTAX INTEGER (1..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An instance of this object only exists when the
local VCL end-point is also the VCC end-point,
and AAL5 is in use.
The maximum AAL5 CPCS SDU size in octets that is
supported on the receive direction of this VCC."
DEFVAL { 9188 }
::= { atmVclEntry 10 }
atmVccAal5EncapsType OBJECT-TYPE
SYNTAX INTEGER {
vcMultiplexRoutedProtocol(1),
vcMultiplexBridgedProtocol8023(2),
vcMultiplexBridgedProtocol8025(3),
vcMultiplexBridgedProtocol8026(4),
vcMultiplexLANemulation8023(5),
vcMultiplexLANemulation8025(6),
llcEncapsulation(7),
multiprotocolFrameRelaySscs(8),
other(9),
unknown(10)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An instance of this object only exists when the
local VCL end-point is also the VCC end-point,
and AAL5 is in use.
The type of data encapsulation used over
the AAL5 SSCS layer. The definitions reference
RFC 1483 Multiprotocol Encapsulation
Ahmed & Tesink [Page 43]
RFC 1695 ATM Management Objects August 1994
over ATM AAL5 and to the ATM Forum
LAN Emulation specification."
DEFVAL { llcEncapsulation }
::= { atmVclEntry 11 }
atmVclCrossConnectIdentifier OBJECT-TYPE
SYNTAX INTEGER (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object is implemented only for a VCL
which is cross-connected to other VCLs
that belong to the same VCC. All such
associated VCLs have the same value of this
object, and all their cross-connections are
identified by entries in the
atmVcCrossConnectTable for which
atmVcCrossConnectIndex has the same value.
The value of this object is initialized by the
agent after the associated entries in the
atmVcCrossConnectTable have been created."
::= {atmVclEntry 12}
atmVclRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is used to create, delete or
modify a row in this table. To create
a new VCL, this object is initially set
to 'createAndWait' or 'createAndGo'.
This object must not be set to 'active'
unless the following columnar objects exist
in this row:
atmVclReceiveTrafficDescrIndex,
atmVclTransmitTrafficDescrIndex.
In addition, if the local VCL end-point
is also the VCC end-point:
atmVccAalType.
In addition, for AAL5 connections only:
atmVccAal5CpcsTransmitSduSize,
atmVccAal5CpcsReceiveSduSize, and
atmVccAal5EncapsType."
DEFVAL { active }
::= {atmVclEntry 13}
Ahmed & Tesink [Page 44]
RFC 1695 ATM Management Objects August 1994
-- ATM Virtual Path (VP) Cross Connect Group
-- This group contains configuration and state
-- information of all point-to-point,
-- point-to-multipoint, or multipoint-to-multipoint
-- VP cross-connects.
-- This table has read-create access and can be used
-- to cross-connect the VPLs together in an ATM switch
-- or network. The atmVpCrossConnectIndex
-- is used to associate the related
-- VPLs that are cross-connected together.
-- The ATM VP Cross Connect Group
-- models each bi-directional VPC
-- cross-connect as a set of entries in
-- the atmVpCrossConnectTable. A
-- point-to-point VPC cross-connect is modeled
-- as one entry; a point-to-multipoint (N leafs) VPC
-- cross-connect as N entries in this table; and
-- a multipoint-to-multipoint (N parties) VPC cross-
-- connect as N(N-1)/2 entries in this table.
-- In the latter cases, all the N (or N(N-1)/2) entries
-- are associated with a single VPC cross-connect by
-- having the same value of atmVpCrossConnectIndex.
-- _________________________________________
-- | |
-- Low | ATM Switch or Network | High
-- port| | port
-- _____|>> from low to high VPC traffic flow >>|______
-- |<< from high to low VPC traffic flow <<|
-- | |
-- |_______________________________________|
--
-- The terms low and high are chosen to represent
-- numerical ordering of the two interfaces associated
-- with a VPC cross-connect. That is, the ATM interface
-- with the lower value of ifIndex is termed 'low',
-- while the other ATM interface associated with the
-- VPC cross-connect is termed 'high'. This terminology
-- is used to provide directional information; for
-- example, the atmVpCrossConnectL2HOperStatus applies
-- to the low->high direction, and
-- atmVpCrossConnectH2LOperStatus applies to the
-- high->low direction, as illustrated above.
Ahmed & Tesink [Page 45]
RFC 1695 ATM Management Objects August 1994
atmVpCrossConnectIndexNext OBJECT-TYPE
SYNTAX INTEGER (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an appropriate value to
be used for atmVpCrossConnectIndex when creating
entries in the atmVpCrossConnectTable. The value
0 indicates that no unassigned entries are
available. To obtain the atmVpCrossConnectIndex
value for a new entry, the manager issues a
management protocol retrieval operation to obtain
the current value of this object. After each
retrieval, the agent should modify the value to
the next unassigned index."
::= { atmMIBObjects 8 }
-- The ATM VP Cross Connect Table
atmVpCrossConnectTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmVpCrossConnectEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The ATM VP Cross Connect table. A bi-
directional VP cross-connect which
cross-connects two VPLs is modeled
as one entry in this table."
::= { atmMIBObjects 9 }
atmVpCrossConnectEntry OBJECT-TYPE
SYNTAX AtmVpCrossConnectEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the ATM VP Cross Connect table.
This entry is used to model a bi-directional
ATM VP cross-connect which cross-connects
two VPLs.
Step-wise Procedures to set up a VP Cross-connect
Once the entries in the atmVplTable are created,
the following procedures are used
to cross-connect the VPLs together.
Ahmed & Tesink [Page 46]
RFC 1695 ATM Management Objects August 1994
(1) The manager obtains a unique
atmVpCrossConnectIndex by reading the
atmVpCrossConnectIndexNext object.
(2) Next, the manager creates a set of one
or more rows in the ATM VP Cross Connect
Table, one for each cross-connection between
two VPLs. Each row is indexed by the ATM
interface port numbers and VPI values of the
two ends of that cross-connection.
This set of rows specifies the topology of the
VPC cross-connect and is identified by a single
value of atmVpCrossConnectIndex.
Negotiated VP Cross-Connect Establishment
(2a) The manager creates a row in this table by
setting atmVpCrossConnectRowStatus to
createAndWait(5). The agent checks the
requested topology and the mutual sanity of
the ATM traffic parameters and
QoS Classes, i.e., the row creation fails if:
- the requested topology is not supported
by the agent,
- the traffic/QoS parameter values
associated with the requested row are
incompatible with those of already existing
rows for this VP cross-connect.
[For example, for setting up
a point-to-point VP cross-connect, the
ATM traffic parameters in the receive direction
of a VPL at the low end of the cross-connect
must equal to the traffic parameters in the
transmit direction of the other VPL at the
high end of the cross-connect,
otherwise, the row creation fails.]
The agent also checks for internal errors
in building the cross-connect.
The atmVpCrossConnectIndex values in the
corresponding atmVplTable rows are filled
in by the agent at this point.
(2b) The manager promotes the row in the
atmVpCrossConnectTable by setting
atmVpCrossConnectRowStatus to active(1). If
this set is successful, the agent has reserved
the resources specified by the ATM traffic
Ahmed & Tesink [Page 47]
RFC 1695 ATM Management Objects August 1994
parameter and QoS Class values
for each direction of the VP cross-connect
in an ATM switch or network.
(3) The manager sets the
atmVpCrossConnectAdminStatus to up(1) in all
rows of this VP cross-connect to turn the
traffic flow on.
One-Shot VP Cross-Connect Establishment
A VP cross-connect may also be established in
one step by a set-request with all necessary
parameter values and atmVpCrossConnectRowStatus
set to createAndGo(4).
In contrast to the negotiated VP cross-connect
establishment which allows for detailed error
checking (i.e., set errors are explicitly linked
to particular resource acquisition failures),
the one-shot VP cross-connect establishment
performs the setup on one operation but does not
have the advantage of step-wise error checking.
VP Cross-Connect Retirement
A VP cross-connect identified by a particular
value of atmVpCrossConnectIndex is released by:
(1) Setting atmVpCrossConnectRowStatus of all
rows identified by this value of
atmVpCrossConnectIndex to destroy(6).
The agent may release all
associated resources, and the
atmVpCrossConnectIndex values in the
corresponding atmVplTable row are removed.
Note that a situation when only a subset of
the associated rows are deleted corresponds
to a VP topology change.
(2) After deletion of the appropriate
atmVpCrossConnectEntries, the manager may
set atmVplRowStatus to destroy(6) the
associated VPLs. The agent releases
the resources and removes the associated
rows in the atmVplTable.
Ahmed & Tesink [Page 48]
RFC 1695 ATM Management Objects August 1994
VP Cross-connect Reconfiguration
At the discretion of the agent, a VP
cross-connect may be reconfigured by
adding and/or deleting leafs to/from
the VP topology as per the VP cross-connect
establishment/retirement procedures.
Reconfiguration of traffic/QoS parameter
values requires release of the VP cross-connect
before those parameter values may by changed
for individual VPLs."
INDEX { atmVpCrossConnectIndex,
atmVpCrossConnectLowIfIndex,
atmVpCrossConnectLowVpi,
atmVpCrossConnectHighIfIndex,
atmVpCrossConnectHighVpi }
::= { atmVpCrossConnectTable 1 }
AtmVpCrossConnectEntry ::= SEQUENCE {
atmVpCrossConnectIndex INTEGER,
atmVpCrossConnectLowIfIndex IfIndex,
atmVpCrossConnectLowVpi INTEGER,
atmVpCrossConnectHighIfIndex IfIndex,
atmVpCrossConnectHighVpi INTEGER,
atmVpCrossConnectAdminStatus INTEGER,
atmVpCrossConnectL2HOperStatus INTEGER,
atmVpCrossConnectH2LOperStatus INTEGER,
atmVpCrossConnectL2HLastChange TimeStamp,
atmVpCrossConnectH2LLastChange TimeStamp,
atmVpCrossConnectRowStatus RowStatus
}
atmVpCrossConnectIndex OBJECT-TYPE
SYNTAX INTEGER (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique value to identify this VP cross-connect."
::= { atmVpCrossConnectEntry 1 }
atmVpCrossConnectLowIfIndex OBJECT-TYPE
SYNTAX IfIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to MIB II's
ifIndex value of the ATM interface port for this
VP cross-connect. The term low implies
Ahmed & Tesink [Page 49]
RFC 1695 ATM Management Objects August 1994
that this ATM interface has the numerically lower
ifIndex value than the other ATM interface
identified in the same atmVpCrossConnectEntry."
::= { atmVpCrossConnectEntry 2 }
atmVpCrossConnectLowVpi OBJECT-TYPE
SYNTAX INTEGER (1..4095)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to the VPI
value at the ATM interface
associated with the VP cross-connect that is
identified by atmVpCrossConnectLowIfIndex.
The VPI value cannot exceed the number
supported by the atmInterfaceMaxVpiBits
at the low ATM interface port."
::= { atmVpCrossConnectEntry 3 }
atmVpCrossConnectHighIfIndex OBJECT-TYPE
SYNTAX IfIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to MIB II's
ifIndex value of the ATM interface port for
this VP cross-connect. The term high
implies that this ATM interface has the
numerically higher ifIndex value than the
other ATM interface identified in the same
atmVpCrossConnectEntry."
::= { atmVpCrossConnectEntry 4 }
atmVpCrossConnectHighVpi OBJECT-TYPE
SYNTAX INTEGER (1..4095)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to the VPI
value at the ATM interface associated with
the VP cross-connect that is identified
by atmVpCrossConnectHighIfIndex.
The VPI value cannot exceed the number
supported by the atmInterfaceMaxVpiBits
at the high ATM interface port."
::= { atmVpCrossConnectEntry 5 }
atmVpCrossConnectAdminStatus OBJECT-TYPE
Ahmed & Tesink [Page 50]
RFC 1695 ATM Management Objects August 1994
SYNTAX INTEGER {
up(1),
down(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the desired
administrative status of this bi-directional
VP cross-connect. The up and down states
indicate that the traffic flow is enabled
and disabled respectively on this VP
cross-connect."
DEFVAL { down }
::= { atmVpCrossConnectEntry 6 }
atmVpCrossConnectL2HOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2),
unknown(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object identifies the current
operational status of the VP cross-connect
in one direction; (i.e., from the low to
high direction). The up and down states indicate
that this ATM VP cross-connect from low
to high direction is operational or not
operational respectively.
The unknown state indicates that
the state of it cannot be determined."
::= { atmVpCrossConnectEntry 7 }
atmVpCrossConnectH2LOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2),
unknown(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object identifies the current
operational status of the VP cross-connect
in one direction; (i.e., from the high to
Ahmed & Tesink [Page 51]
RFC 1695 ATM Management Objects August 1994
low direction). The up and down states indicate
that this ATM VP cross-connect from high
to low direction is operational or not
operational respectively. The
unknown state indicates that the state
of it cannot be determined."
::= { atmVpCrossConnectEntry 8 }
atmVpCrossConnectL2HLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of MIB II's sysUpTime object
at the time this VP cross-connect entered
its current operational state in the low to
high direction. If the current state was
entered prior to the last re-initialization of the
agent, then this object contains a zero value."
::= { atmVpCrossConnectEntry 9 }
atmVpCrossConnectH2LLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of MIB II's sysUpTime object at the
time this VP cross-connect entered its current
operational state in the high to low direction.
If the current state was entered prior to the
last re-initialization of the agent,
then this object contains a zero value."
::= { atmVpCrossConnectEntry 10 }
atmVpCrossConnectRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this entry in the
atmVpCrossConnectTable. This object is used to
create a cross-connect for cross-connecting
VPLs which are created using the atmVplTable
or to change or delete an existing cross-connect.
This object must be initially set
to `createAndWait' or 'createAndGo'.
This object cannot be set to `active'
unless the following columnar object exists
Ahmed & Tesink [Page 52]
RFC 1695 ATM Management Objects August 1994
in this row: atmVpCrossConnectAdminStatus.
To turn on a VP cross-connect,
the atmVpCrossConnectAdminStatus
is set to `up'."
DEFVAL { active }
::= { atmVpCrossConnectEntry 11 }
-- ATM Virtual Channel (VC) Cross Connect Group
-- This group contains configuration and state
-- information of a bi-directional VC cross-connect.
-- This group is used to model a bi-directional
-- point-to-point, point-to-multipoint or
-- multipoint-to-multipoint VC cross-connects.
-- This table has read-create access and is used
-- to cross-connect the VCLs together in an ATM switch
-- or network that belong to a VC connection.
-- The atmVcCrossConnectIndex is used to associate
-- the related VCLs that are cross-connected together.
-- The step-wise procedures described for setting
-- up a VP cross-connect are also used for setting up
-- a VC cross-connect.
atmVcCrossConnectIndexNext OBJECT-TYPE
SYNTAX INTEGER (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an appropriate value to
be used for atmVcCrossConnectIndex when creating
entries in the atmVcCrossConnectTable. The value
0 indicates that no unassigned entries are
available. To obtain the atmVpCrossConnectIndex
value for a new entry, the manager issues a
management protocol retrieval operation to obtain
the current value of this object. After each
retrieval, the agent should modify the value to
the next unassigned index."
::= { atmMIBObjects 10 }
-- The ATM VC Cross Connect Table
Ahmed & Tesink [Page 53]
RFC 1695 ATM Management Objects August 1994
atmVcCrossConnectTable OBJECT-TYPE
SYNTAX SEQUENCE OF AtmVcCrossConnectEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The ATM VC Cross Connect table. A bi-
directional VC cross-connect which
cross-connects two end points (i.e., VCLs)
is modeled as one entry in this table."
::= { atmMIBObjects 11 }
atmVcCrossConnectEntry OBJECT-TYPE
SYNTAX AtmVcCrossConnectEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the ATM VC Cross Connect table.
This entry is used to model a bi-directional ATM
VC cross-connect cross-connecting two end points.
Step-wise Procedures to set up a VC Cross-connect
Once the entries in the atmVclTable are created,
the following procedures are used
to cross-connect the VCLs together to
form a VCC segment.
(1) The manager obtains a unique
atmVcCrossConnectIndex by reading the
atmVcCrossConnectIndexNext object.
(2) Next, the manager creates a set of one
or more rows in the ATM VC Cross Connect
Table, one for each cross-connection between
two VCLs. Each row is indexed by the ATM
interface port numbers and VPI/VCI values of
the two ends of that cross-connection.
This set of rows specifies the topology of the
VCC cross-connect and is identified by a single
value of atmVcCrossConnectIndex.
Negotiated VC Cross-Connect Establishment
(2a) The manager creates a row in this table by
setting atmVcCrossConnectRowStatus to
createAndWait(5). The agent checks the
requested topology and the mutual sanity of
Ahmed & Tesink [Page 54]
RFC 1695 ATM Management Objects August 1994
the ATM traffic parameters and
QoS Classes, i.e., the row creation fails if:
- the requested topology is not supported
by the agent,
- the traffic/QoS parameter values
associated with the requested row are
incompatible with those of already existing
rows for this VC cross-connect.
[For example, for setting up
a point-to-point VC cross-connect, the
ATM traffic parameters in the receive direction
of a VCL at the low end of the cross-connect
must equal to the traffic parameters in the
transmit direction of the other VCL at the
high end of the cross-connect,
otherwise, the row creation fails.]
The agent also checks for internal errors
in building the cross-connect.
The atmVcCrossConnectIndex values in the
corresponding atmVclTable rows are filled
in by the agent at this point.
(2b) The manager promotes the row in the
atmVcCrossConnectTable by setting
atmVcCrossConnectRowStatus to active(1). If
this set is successful, the agent has reserved
the resources specified by the ATM traffic
parameter and QoS Class values
for each direction of the VC cross-connect
in an ATM switch or network.
(3) The manager sets the
atmVcCrossConnectAdminStatus to up(1)
in all rows of this VC cross-connect to
turn the traffic flow on.
One-Shot VC Cross-Connect Establishment
A VC cross-connect may also be established in
one step by a set-request with all necessary
parameter values and atmVcCrossConnectRowStatus
set to createAndGo(4).
In contrast to the negotiated VC cross-connect
establishment which allows for detailed error
checking i.e., set errors are explicitly linked to
Ahmed & Tesink [Page 55]
RFC 1695 ATM Management Objects August 1994
particular resource acquisition failures), the
one-shot VC cross-connect establishment
performs the setup on one operation but does
not have the advantage of step-wise error
checking.
VC Cross-Connect Retirement
A VC cross-connect identified by a particular
value of atmVcCrossConnectIndex is released by:
(1) Setting atmVcCrossConnectRowStatus of all rows
identified by this value of
atmVcCrossConnectIndex to destroy(6).
The agent may release all
associated resources, and the
atmVcCrossConnectIndex values in the
corresponding atmVclTable row are removed.
Note that a situation when only a subset of
the associated rows are deleted corresponds
to a VC topology change.
(2) After deletion of the appropriate
atmVcCrossConnectEntries, the manager may
set atmVclRowStatus to destroy(6) the
associated VCLs. The agent releases
the resources and removes the associated
rows in the atmVclTable.
VC Cross-Connect Reconfiguration
At the discretion of the agent, a VC
cross-connect may be reconfigured by
adding and/or deleting leafs to/from
the VC topology as per the VC cross-connect
establishment/retirement procedures.
Reconfiguration of traffic/QoS parameter
values requires release of the VC cross-connect
before those parameter values may by changed
for individual VCLs."
INDEX { atmVcCrossConnectIndex,
atmVcCrossConnectLowIfIndex,
atmVcCrossConnectLowVpi,
atmVcCrossConnectLowVci,
atmVcCrossConnectHighIfIndex,
atmVcCrossConnectHighVpi,
atmVcCrossConnectHighVci }
::= { atmVcCrossConnectTable 1 }
Ahmed & Tesink [Page 56]
RFC 1695 ATM Management Objects August 1994
AtmVcCrossConnectEntry ::= SEQUENCE {
atmVcCrossConnectIndex INTEGER,
atmVcCrossConnectLowIfIndex IfIndex,
atmVcCrossConnectLowVpi INTEGER,
atmVcCrossConnectLowVci INTEGER,
atmVcCrossConnectHighIfIndex IfIndex,
atmVcCrossConnectHighVpi INTEGER,
atmVcCrossConnectHighVci INTEGER,
atmVcCrossConnectAdminStatus INTEGER,
atmVcCrossConnectL2HOperStatus INTEGER,
atmVcCrossConnectH2LOperStatus INTEGER,
atmVcCrossConnectL2HLastChange TimeStamp,
atmVcCrossConnectH2LLastChange TimeStamp,
atmVcCrossConnectRowStatus RowStatus
}
atmVcCrossConnectIndex OBJECT-TYPE
SYNTAX INTEGER (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique value to identify this VC cross-connect."
::= { atmVcCrossConnectEntry 1 }
atmVcCrossConnectLowIfIndex OBJECT-TYPE
SYNTAX IfIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to MIB II's
ifIndex value of the ATM interface port for this
VC cross-connect. The term low implies
that this ATM interface has the numerically lower
ifIndex value than the other ATM interface
identified in the same atmVcCrossConnectEntry."
::= { atmVcCrossConnectEntry 2 }
atmVcCrossConnectLowVpi OBJECT-TYPE
SYNTAX INTEGER (0..4095)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to the VPI
value at the ATM interface
associated with the VC cross-connect that is
identified by atmVcCrossConnectLowIfIndex.
The VPI value cannot exceed the number
supported by the atmInterfaceMaxVpiBits
Ahmed & Tesink [Page 57]
RFC 1695 ATM Management Objects August 1994
at the low ATM interface port."
::= { atmVcCrossConnectEntry 3 }
atmVcCrossConnectLowVci OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to the VCI
value at the ATM interface
associated with this VC cross-connect that is
identified by atmVcCrossConnectLowIfIndex.
The VCI value cannot exceed the number
supported by the atmInterfaceMaxVciBits
at the low ATM interface port."
::= { atmVcCrossConnectEntry 4 }
atmVcCrossConnectHighIfIndex OBJECT-TYPE
SYNTAX IfIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to MIB II's
ifIndex value for the ATM interface port for
this VC cross-connect. The term high
implies that this VC cross-connect
that this ATM interface has the numerically higher
ifIndex value than the other ATM interface
identified in the same atmVcCrossConnectEntry."
::= { atmVcCrossConnectEntry 5 }
atmVcCrossConnectHighVpi OBJECT-TYPE
SYNTAX INTEGER (0..4095)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object is equal to the VPI
value at the ATM interface
associated with the VC cross-connect that is
identified by atmVcCrossConnectHighIfIndex.
The VPI value cannot exceed
the number supported by the atmInterfaceMaxVpiBits
at the high ATM interface port."
::= { atmVcCrossConnectEntry 6 }
atmVcCrossConnectHighVci OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS not-accessible
Ahmed & Tesink [Page 58]
RFC 1695 ATM Management Objects August 1994
STATUS current
DESCRIPTION
"The value of this object is equal to the VCI
value at the ATM interface
associated with the VC cross-connect that is
identified by atmVcCrossConnectHighIfIndex.
The VCI value cannot exceed
the number supported by the atmInterfaceMaxVciBits
at the high ATM interface port."
::= { atmVcCrossConnectEntry 7 }
atmVcCrossConnectAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object identifies the desired
administrative status of this bi-directional
VC cross-connect. The up and down states
indicate that the traffic flow is enabled or
disabled respectively on this VC cross-connect."
DEFVAL { down }
::= { atmVcCrossConnectEntry 8 }
atmVcCrossConnectL2HOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2),
unknown(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object identifies the current
operational status of the VC cross-connect
in one direction; (i.e., from the low to
high direction). The up and down states indicate
that this ATM VC cross-connect from low
to high direction is operational or not
operational respectively. The unknown state
indicates that the state of it cannot be
determined."
::= { atmVcCrossConnectEntry 9 }
Ahmed & Tesink [Page 59]
RFC 1695 ATM Management Objects August 1994
atmVcCrossConnectH2LOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2),
unknown(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object identifies the current
operational status of the VC cross-connect
in one direction; (i.e., from the high to
low direction). The up and down states indicate
that this ATM VC cross-connect from high
to low direction is operational or not
operational respectively. The unknown state
indicates that the state of it cannot be
determined."
::= { atmVcCrossConnectEntry 10 }
atmVcCrossConnectL2HLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of MIB II's sysUpTime object
at the time this VC cross-connect entered
its current operational state in low to high
direction. If the current state was
entered prior to the last re-initialization of the
agent, then this object contains a zero value."
::= { atmVcCrossConnectEntry 11 }
atmVcCrossConnectH2LLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of MIB II's sysUpTime object
at the time this VC cross-connect entered
its current operational state in high to low
direction. If the current state was
entered prior to the last re-initialization of the
agent, then this object contains a zero value."
::= { atmVcCrossConnectEntry 12 }
atmVcCrossConnectRowStatus OBJECT-TYPE
SYNTAX RowStatus
Ahmed & Tesink [Page 60]
RFC 1695 ATM Management Objects August 1994
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this entry in the
atmVcCrossConnectTable. This object is used to
create a new cross-connect for cross-connecting
VCLs which are created using the atmVclTable
or to change or delete existing cross-connect.
This object must be initially set to
`createAndWait' or 'createAndGo'. This object
cannot be set to `active' unless the following
columnar object exists in this row:
atmVcCrossConnectAdminStatus.
To turn on a VC cross-connect,
the atmVcCrossConnectAdminStatus
is set to `up'."
::= { atmVcCrossConnectEntry 13 }
-- AAL5 Virtual Channel Connection Performance Statistics
-- Group
-- This group contains the AAL5
-- performance statistics of a VCC at the
-- interface associated with an AAL5 entity in an ATM
-- host or ATM switch.
aal5VccTable OBJECT-TYPE
SYNTAX SEQUENCE OF Aal5VccEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains AAL5 VCC performance
parameters."
::= { atmMIBObjects 12 }
aal5VccEntry OBJECT-TYPE
SYNTAX Aal5VccEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This list contains the AAL5 VCC
performance parameters."
INDEX { ifIndex, aal5VccVpi, aal5VccVci }
::= { aal5VccTable 1 }
Aal5VccEntry ::= SEQUENCE {
Ahmed & Tesink [Page 61]
RFC 1695 ATM Management Objects August 1994
aal5VccVpi INTEGER,
aal5VccVci INTEGER,
aal5VccCrcErrors Counter32,
aal5VccSarTimeOuts Counter32,
aal5VccOverSizedSDUs Counter32
}
aal5VccVpi OBJECT-TYPE
SYNTAX INTEGER (0..4095)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The VPI value of the AAL5 VCC at the
interface identified by the ifIndex."
::= { aal5VccEntry 1 }
aal5VccVci OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The VCI value of the AAL5 VCC at the
interface identified by the ifIndex."
::= { aal5VccEntry 2 }
aal5VccCrcErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of AAL5 CPCS PDUs received with
CRC-32 errors on this AAL5 VCC at the
interface associated with an AAL5 entity."
::= { aal5VccEntry 3 }
aal5VccSarTimeOuts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of partially re-assembled AAL5
CPCS PDUs which were discarded
on this AAL5 VCC at the interface associated
with an AAL5 entity because they
were not fully re-assembled within the
required time period. If the re-assembly
timer is not supported, then this object
Ahmed & Tesink [Page 62]
RFC 1695 ATM Management Objects August 1994
contains a zero value."
::= { aal5VccEntry 4 }
aal5VccOverSizedSDUs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of AAL5 CPCS PDUs discarded
on this AAL5 VCC at the interface
associated with an AAL5 entity because the
AAL5 SDUs were too large."
::= { aal5VccEntry 5 }
-- Conformance Information
atmMIBConformance OBJECT IDENTIFIER ::= { atmMIB 2 }
atmMIBGroups OBJECT IDENTIFIER
::= { atmMIBConformance 1 }
atmMIBCompliances OBJECT IDENTIFIER
::= { atmMIBConformance 2 }
-- Compliance Statements
atmMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for SNMP entities
including networks which have ATM and
AAL5 interfaces."
MODULE -- this module
MANDATORY-GROUPS {atmInterfaceConfGroup,
atmTrafficDescrGroup}
OBJECT atmInterfaceMaxVpcs
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmInterfaceMaxVccs
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
Ahmed & Tesink [Page 63]
RFC 1695 ATM Management Objects August 1994
OBJECT atmInterfaceMaxActiveVpiBits
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmInterfaceMaxActiveVciBits
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmInterfaceIlmiVpi
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmInterfaceIlmiVci
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmInterfaceMyNeighborIpAddress
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmInterfaceMyNeighborIfName
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmTrafficDescrType
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmTrafficDescrParam1
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmTrafficDescrParam2
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmTrafficDescrParam3
MIN-ACCESS read-only
DESCRIPTION
Ahmed & Tesink [Page 64]
RFC 1695 ATM Management Objects August 1994
"Write access is not required."
OBJECT atmTrafficDescrParam4
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmTrafficDescrParam5
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmTrafficQoSClass
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmTrafficDescrRowStatus
SYNTAX INTEGER {active(1)}
-- subset of RowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required, and only one
of the six enumerated values for the
RowStatus textual convention need be
supported, specifically: active(1)."
GROUP atmInterfaceDs3PlcpGroup
DESCRIPTION
"This group is mandatory only for those
ATM interfaces which implement the
DS3 PLCP layer."
GROUP atmInterfaceTCGroup
DESCRIPTION
"This group is mandatory only for those
ATM interfaces which implement the
TC Sublayer."
GROUP atmVpcTerminationGroup
DESCRIPTION
"This group is mandatory only for those
ATM interfaces which implement ATM
VPLs that terminate VPCs (i.e., ones which
are NOT cross-connected to other VPLs)."
GROUP atmVpCrossConnectGroup
DESCRIPTION
Ahmed & Tesink [Page 65]
RFC 1695 ATM Management Objects August 1994
"This group is mandatory only for those
ATM interfaces which implement ATM
VPLs that are not associated with VCLs
and are cross-connected to other VPLs."
OBJECT atmVplVpi
SYNTAX INTEGER (1..255)
DESCRIPTION
"For ATM UNIs supporting VPCs, the VPI value
ranges from 1 to 255."
OBJECT atmVplAdminStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVplReceiveTrafficDescrIndex
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVplTransmitTrafficDescrIndex
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVplRowStatus
SYNTAX INTEGER {active(1)}
-- subset of RowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required, and only one
of the six enumerated values for the
RowStatus textual convention need be
supported, specifically: active(1)."
OBJECT atmVpCrossConnectLowVpi
SYNTAX INTEGER (1..255)
DESCRIPTION
"For ATM UNIs supporting VPCs, the VPI value
at the numerically lower ATM interface port
index number ranges from 1 to 255."
OBJECT atmVpCrossConnectHighVpi
SYNTAX INTEGER (1..255)
DESCRIPTION
"For ATM UNIs supporting VPCs, the VPI value
at the numerically higher ATM interface port
Ahmed & Tesink [Page 66]
RFC 1695 ATM Management Objects August 1994
index number ranges from 1 to 255."
OBJECT atmVpCrossConnectAdminStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVpCrossConnectRowStatus
SYNTAX INTEGER {active(1)}
-- subset of RowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required, and only one
of the six enumerated values for the
RowStatus textual convention need be
supported, specifically: active(1)."
GROUP atmVccTerminationGroup
DESCRIPTION
"This group is mandatory only for those
ATM interfaces which implement ATM
VCLs that terminate VCCs (i.e., ones which
are NOT cross-connected to other VCLs)."
GROUP atmVcCrossConnectGroup
DESCRIPTION
"This group is mandatory only for those
ATM interfaces which implement ATM
VCLs that are cross-connected to
other VCLs."
OBJECT atmVclVpi
SYNTAX INTEGER (0..255)
DESCRIPTION
"For ATM UNIs supporting VCCs, the VPI value
ranges from 0 to 255."
OBJECT atmVclAdminStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVclReceiveTrafficDescrIndex
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVclTransmitTrafficDescrIndex
Ahmed & Tesink [Page 67]
RFC 1695 ATM Management Objects August 1994
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVccAalType
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVclRowStatus
SYNTAX INTEGER {active(1)}
-- subset of RowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required, and only one
of the six enumerated values for the
RowStatus textual convention need be
supported, specifically: active(1)."
OBJECT atmVcCrossConnectLowVpi
SYNTAX INTEGER (0..255)
DESCRIPTION
"For ATM UNIs supporting VCCs, the VPI value
at the numerically lower ATM interface port
index number ranges from 0 to 255."
OBJECT atmVcCrossConnectHighVpi
SYNTAX INTEGER (0..255)
DESCRIPTION
"For ATM UNIs supporting VCCs, the VPI value
at the numerically higher ATM interface port
index number ranges from 0 to 255."
OBJECT atmVcCrossConnectAdminStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVcCrossConnectRowStatus
SYNTAX INTEGER { active(1)}
-- subset of RowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required, and only one
of the six enumerated values for the
RowStatus textual convention need be
supported, specifically: active(1)."
Ahmed & Tesink [Page 68]
RFC 1695 ATM Management Objects August 1994
GROUP aal5VccGroup
DESCRIPTION
"This group is mandatory for the
AAL5 virtual connections only."
OBJECT aal5VccVpi
SYNTAX INTEGER (0..255)
DESCRIPTION
"For ATM UNIs supporting AAL5 VCCs,
the VPI value ranges from 0 to 255."
OBJECT atmVccAal5CpcsTransmitSduSize
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVccAal5CpcsReceiveSduSize
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT atmVccAal5EncapsType
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
::= { atmMIBCompliances 1 }
-- Units of Conformance
atmInterfaceConfGroup OBJECT-GROUP
OBJECTS {
atmInterfaceMaxVpcs, atmInterfaceMaxVccs,
atmInterfaceConfVpcs, atmInterfaceConfVccs,
atmInterfaceMaxActiveVpiBits,
atmInterfaceMaxActiveVciBits,
atmInterfaceIlmiVpi,
atmInterfaceIlmiVci,
atmInterfaceAddressType,
atmInterfaceAdminAddress,
atmInterfaceMyNeighborIpAddress,
atmInterfaceMyNeighborIfName}
STATUS current
DESCRIPTION
"A collection of objects providing configuration
information about an ATM interface."
::= { atmMIBGroups 1 }
Ahmed & Tesink [Page 69]
RFC 1695 ATM Management Objects August 1994
atmTrafficDescrGroup OBJECT-GROUP
OBJECTS {
atmTrafficDescrType, atmTrafficDescrParam1,
atmTrafficDescrParam2, atmTrafficDescrParam3,
atmTrafficDescrParam4, atmTrafficDescrParam5,
atmTrafficQoSClass, atmTrafficDescrRowStatus}
STATUS current
DESCRIPTION
"A collection of objects providing information
about ATM traffic descriptor type and
the associated parameters."
::= { atmMIBGroups 2 }
atmInterfaceDs3PlcpGroup OBJECT-GROUP
OBJECTS {atmInterfaceDs3PlcpSEFSs,
atmInterfaceDs3PlcpAlarmState,
atmInterfaceDs3PlcpUASs}
STATUS current
DESCRIPTION
"A collection of objects providing information
about DS3 PLCP layer at an ATM interface."
::= { atmMIBGroups 3 }
atmInterfaceTCGroup OBJECT-GROUP
OBJECTS { atmInterfaceOCDEvents,
atmInterfaceTCAlarmState }
STATUS current
DESCRIPTION
"A collection of objects providing information
about TC sublayer at an ATM interface."
::= { atmMIBGroups 4 }
atmVpcTerminationGroup OBJECT-GROUP
OBJECTS {atmVplOperStatus, atmVplAdminStatus,
atmVplLastChange,
atmVplReceiveTrafficDescrIndex,
atmVplTransmitTrafficDescrIndex,
atmVplRowStatus }
STATUS current
DESCRIPTION
"A collection of objects providing
information about a VPL at an ATM interface
which terminates a VPC
(i.e., one which is NOT cross-connected
to other VPLs)."
::= { atmMIBGroups 5 }
atmVccTerminationGroup OBJECT-GROUP
Ahmed & Tesink [Page 70]
RFC 1695 ATM Management Objects August 1994
OBJECTS {atmVclOperStatus, atmVclAdminStatus,
atmVclLastChange,
atmVclReceiveTrafficDescrIndex,
atmVclTransmitTrafficDescrIndex,
atmVccAalType, atmVclRowStatus }
STATUS current
DESCRIPTION
"A collection of objects providing information
about a VCL at an ATM interface
which terminates a VCC (i.e., one which is
NOT cross-connected to other VCLs)."
::= { atmMIBGroups 6 }
atmVpCrossConnectGroup OBJECT-GROUP
OBJECTS { atmVplReceiveTrafficDescrIndex,
atmVplTransmitTrafficDescrIndex,
atmVplOperStatus, atmVplRowStatus,
atmVpCrossConnectAdminStatus,
atmVpCrossConnectL2HOperStatus,
atmVpCrossConnectH2LOperStatus,
atmVpCrossConnectL2HLastChange,
atmVpCrossConnectH2LLastChange,
atmVpCrossConnectRowStatus,
atmVplCrossConnectIdentifier,
atmVpCrossConnectIndexNext }
STATUS current
DESCRIPTION
"A collection of objects providing
information about a VP cross-connect
and the associated VPLs that are
cross-connected together."
::= { atmMIBGroups 7 }
atmVcCrossConnectGroup OBJECT-GROUP
OBJECTS { atmVclReceiveTrafficDescrIndex,
atmVclTransmitTrafficDescrIndex,
atmVclOperStatus, atmVclRowStatus,
atmVcCrossConnectAdminStatus,
atmVcCrossConnectL2HOperStatus,
atmVcCrossConnectH2LOperStatus,
atmVcCrossConnectL2HLastChange,
atmVcCrossConnectH2LLastChange,
atmVcCrossConnectRowStatus,
atmVclCrossConnectIdentifier,
atmVcCrossConnectIndexNext }
STATUS current
DESCRIPTION
"A collection of objects providing
Ahmed & Tesink [Page 71]
RFC 1695 ATM Management Objects August 1994
information about a VC cross-connect
and the associated VCLs that are
cross-connected together."
::= { atmMIBGroups 8 }
aal5VccGroup OBJECT-GROUP
OBJECTS {atmVccAal5CpcsTransmitSduSize,
atmVccAal5CpcsReceiveSduSize,
atmVccAal5EncapsType,
aal5VccCrcErrors, aal5VccSarTimeOuts,
aal5VccOverSizedSDUs }
STATUS current
DESCRIPTION
"A collection of objects providing
AAL5 configuration and performance statistics
of a VCC."
::= { atmMIBGroups 9 }
END
11. Acknowledgments
This memo is the result of the work of the AToMMIB Working Group. In
particular, the contributions of Keith McCloghrie and Ted Brunner
were critical to the formulation of this specification.
12. References
[1] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure
of Management Information for version 2 of the Simple Network
Management Protocol (SNMPv2)", RFC 1442, SNMP Research,Inc.,
Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon
University, April 1993.
[2] McCloghrie, K., and M. Rose, Editors, "Management Information
Base for Network Management of TCP/IP-based internets: MIB-II",
STD 17, RFC 1213, Hughes LAN Systems, Performance Systems
International, March 1991.
[3] Galvin, J., and K. McCloghrie, "Administrative Model for version
2 of the Simple Network Management Protocol (SNMPv2)", RFC 1445,
Trusted Information Systems, Hughes LAN Systems, April 1993.
[4] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol
Operations for version 2 of the Simple Network Management
Protocol (SNMPv2)", RFC 1448, SNMP Research, Inc., Hughes LAN
Systems, Dover Beach Consulting, Inc., Carnegie Mellon
University, April 1993.
Ahmed & Tesink [Page 72]
RFC 1695 ATM Management Objects August 1994
[5] McCloghrie, K. and F. Kastenholz, "Evolution of the Interfaces
Group of MIB-II", RFC 1573, Hughes LAN Systems, FTP Software,
January 1994.
[6] Brown, T., and K. Tesink, "Definitions of Managed Objects for
SMDS Interfaces", RFC 1694, Bellcore, August 1994.
[7] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Textual
Conventions for SNMPv2", RFC 1443, SNMP Research,Inc., Hughes LAN
Systems, Dover Beach Consulting, Inc., Carnegie Mellon
University, April 1993.
[8] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
"Conformance Statements for SNMPv2", RFC 1444, SNMP
Research,Inc., Hughes LAN Systems, Dover Beach Consulting, Inc.,
Carnegie Mellon University, April 1993.
[9] "ATM Forum UNI Specification, Version 3.0", September 1993.
[10] "ATM Forum B-ICI Specification, Version 1.0", September 1993.
13. Security Considerations
Security issues are not discussed in this memo.
14. Authors' Addresses
Masuma Ahmed
Bell Communications Research
Room 1F-217
331 Newman Springs Road
P.O. Box 7020
Red Bank, NJ 07701-7020
Phone: (908) 758-2515
EMail: mxa@mail.bellcore.com
Kaj Tesink
Bell Communications Research
Room 1A-427
331 Newman Springs Road
P.O. Box 7020
Red Bank, NJ 07701-7020
Phone: (908) 758-5254
EMail: kaj@cc.bellcore.com
Ahmed & Tesink [Page 73]
|