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
|
.\"/***********************************************************
.\" Copyright 1989 by Carnegie Mellon University
.\"
.\" All Rights Reserved
.\"
.\" Permission to use, copy, modify, and distribute this software and its
.\" documentation for any purpose and without fee is hereby granted,
.\" provided that the above copyright notice appear in all copies and that
.\" both that copyright notice and this permission notice appear in
.\" supporting documentation, and that the name of CMU not be
.\" used in advertising or publicity pertaining to distribution of the
.\" software without specific, written prior permission.
.\"
.\" CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
.\" ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
.\" CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
.\" ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
.\" WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
.\" ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
.\" SOFTWARE.
.\" ******************************************************************/
.\" Copyright (c) 1983 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms are permitted
.\" provided that the above copyright notice and this paragraph are
.\" duplicated in all such forms and that any documentation,
.\" advertising materials, and other materials related to such
.\" distribution and use acknowledge that the software was developed
.\" by the University of California, Berkeley. The name of the
.\" University may not be used to endorse or promote products derived
.\" from this software without specific prior written permission.
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
.\" WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
.\"
.\" @(#)netstat.1 6.8 (Berkeley) 9/20/88
.\"
.TH SNMPNETSTAT 1 "13 July 1994"
.UC 5
.SH NAME
snmpnetstat \- show network status using SNMP
.SH SYNOPSIS
snmpnetstat hostname community [-airsn] [\-I interface] [-p proto] [interval]
.SH DESCRIPTION
The
.I snmpnetstat
command symbolically displays the values of various network-related
information retrieved from a remote system using the SNMP protocol.
There are a number of output formats,
depending on the options for the information presented.
The first form of the command displays a list of active sockets.
The second form presents the values of other network-related
information according to the option selected.
Using the third form, with an
.I interval
specified,
.I snmpnetstat
will continuously display the information regarding packet
traffic on the configured network interfaces.
The fourth form displays statistics about the named protocol.
.PP
The
.I hostname
specification may be either a host name or an internet address
specified in "dot notation".
.PP
The version 1
.I community
specifies the community name for the transaction with the remote system.
.PP
The options have the following meaning:
.TP
.B \-a
With the default display,
show the state of all sockets; normally sockets used by
server processes are not shown.
.TP
.B \-i
Show the state of all of the interfaces.
.TP
.BI \-I " interface"
Show information only about this interface;
used with an
.I interval
as described below.
.TP
.B \-n
Show network addresses as numbers (normally
.I snmpnetstat
interprets addresses and attempts to display them
symbolically).
This option may be used with any of the display formats.
.TP
.BI \-p " protocol"
Show statistics about
.IR protocol ,
which is either a well-known name for a protocol or an alias for it. Some
protocol names and aliases are listed in the file
.IR /etc/protocols .
A null response typically means that there are no interesting numbers to
report.
The program will complain if
.I protocol
is unknown or if there is no statistics routine for it.
.TP
.B \-s
Show per-protocol statistics.
.TP
.B \-r
Show the routing tables.
When
.B \-s
is also present, show routing statistics instead.
.PP
The default display, for active sockets, shows the local
and remote addresses, protocol,
and the internal state of the protocol.
Address formats are of the form ``host.port'' or ``network.port''
if a socket's address specifies a network but no specific host address.
When known the host and network addresses are displayed symbolically
according to the data bases
.I /etc/hosts
and
.IR /etc/networks ,
respectively. If a symbolic name for an address is unknown, or if
the
.B \-n
option is specified, the address is printed numerically, according
to the address family.
For more information regarding
the Internet ``dot format,''
refer to
.IR inet (3N).
Unspecified,
or ``wildcard'', addresses and ports appear as ``*''.
.PP
The interface display provides a table of cumulative
statistics regarding packets transferred, errors, and collisions.
The network addresses of the interface
and the maximum transmission unit (``mtu'') are also displayed.
.PP
The routing table display indicates the available routes and
their status. Each route consists of a destination host or network
and a gateway to use in forwarding packets. The flags field shows
the state of the route (``U'' if ``up''), whether the route
is to a gateway (``G''), whether the route was created dynamically
by a redirect (``D''), and whether the route has been modified
by a redirect (``M''). Direct routes are created for each
interface attached to the local host;
the gateway field for such entries shows the address of the outgoing interface.
The interface entry indicates the network
interface utilized for the route.
.PP
When
.I snmpnetstat
is invoked with an
.I interval
argument, it displays a running count of statistics related to
network interfaces. This display consists of a
column for the primary interface
and a column summarizing
information for all interfaces.
The primary interface may be replaced with another interface with the
.I \-I
option.
The first line of each screen of information contains a summary since the
system was last rebooted. Subsequent lines of output show values
accumulated over the preceding interval.
.SH SEE ALSO
iostat(1),
vmstat(1),
hosts(5),
networks(5),
protocols(5),
services(5),
cmusnmp(5),variables(5)
RFC 1155, RFC 1156, RFC 1157, SNMP Security Internet Drafts
.SH BUGS
The notion of errors is ill-defined.
|
