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.\" This man page is Copyright (C) 1999 Andi Kleen .
.\" Permission is granted to distribute possibly modified copies
.\" of this page provided the header is included verbatim,
.\" and in case of nontrivial modification author and date
.\" of the modification is added to the header.
.\" $Id: icmp.7,v 1.1.1.1 2000/12/27 12:24:32 BitBIRD Exp $
.\" İ Copyright (c) 2000 LetBright, BitBIRD www.linuxforum.net
.TH ICMP 7 "27 Apr 1999" "Linux Man Page" "Linux Programmer's Manual"
.SH NAME
icmp, IPPROTO_ICMP \- Linux IPv4 ICMP ģ.
.SH DESCRIPTION
Эģʵ˻ RFC792 ЭжġƱЭ顷
ͨѶӦϢ
ûֱʹñģ顣෴ģеЭͨѶ
ЩЭ齫 ICMP ϢصЭӦò㡣ICMP ģҲӦ ICMP
.PP
IPPROTP_ICMP ԭʼ֣raw socketʱ
ûЭпյⱾ ICMP
.BR IPPROTO_ICMP .
.BR raw (7)
ݵֵ ICMP
.BR ICMP_FILTER
ѡйˡĻᴦ ICMP ݵûȥġ
Linux ԿԵÿĿϢıơ
.BR ICMP_REDIRECT
.BR ICMP_DEST_UNREACH
ҲܽĿ·ɵơ
.SH SYSCTLS
ICMP ֧ͨ sysctl ӿһЩȫ IP Sysctl ķʿͨд
.BR /proc/sys/net/ipv4/*
µļͨ
.BR sysctl (2)
ӿڽ. Щ sysctls ض ICMP ͵ݰơ
Linux 2.2 ʹüǺŵԪ ICMP ơ
.\" XXX better description needed
ֵʾʱƣֱǺŵԪΪֹ
.TP
.BR icmp_destunreach_rate
Ŀĵزɵ ICMP Ϣݰʡ˷͵һ
·ɻĿĵصݰıʡ
ƲӰ췢·͵λMTU
.BR ICMP_FRAG_NEEDED
ݰ
.TP
.BR icmp_echo_ignore_all
ֵΪ,Linuxе
.BR ICMP_ECHO
.TP
.BR icmp_echo_ignore_broadcasts
ֵΪ,Linuxз͵㲥ַ
.BR ICMP_ECHO
ݰ
.TP
.BR icmp_echoreply_rate
Ӧ
.BR ICMP_ECHOREQUEST
.BR ICMP_ECHOREPLY
ݰʵֵ
.TP
.BR icmp_paramprob_rate
.BR ICMP_PARAMETERPROB
ݰʵֵһзǷ IP ͷݰʱЩ
.TP
.BR icmp_timeexceed_rate
.BR ICMP_TIME_EXCEEDED
ʵֵһݰ̫ͨʱЩֹ·ɻػ
.SH NOTES
ʵв֧
.B IPPROTO_ICMP
ԭʼ֣raw socketֲһԡ
.\" not really true ATM
.\"
.PP
.\" Linux ICMP RFC1122Э.
.PP
.\" XXX: ƻAlexeyؼIJ.
LinuxΪ·ʱ
.BR ICMP_REDIRECT
ںҲֻ·ɱеľغ·¶ʱʱŽЩ
.PP
.BR ICMP_TIMESTAMP
ص 64 λΪλʱ197011ʱ䣮
.PP
Linux ICMP ڲʹԭʼ֣raw socketICMP
ԭʼֿ
.BR netstat (8)
Ϣг֣һzero inodeϢ
.PP
.SH VERSIONS
2.2汾нٲ֧
.BR ICMP_ADDRESS
.PP
2.2汾н֧
.BR ICMP_SOURCE_QUENCH
.SH μ
.BR ip (7)
.PP
RFC792 ICMPЭϸ
.SH "[İά]"
LetBright E-mail:letbright@netease.com
.SH "[ݸ]" 2000/10/31
.br
.BйLinux̳manֲҳƻ:www.cmpp.net/
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