24-Port Layer 3 Switch Management Guide

C ONFIGURING THE S WITCH
3-168
ICMP Statistics
Internet Control Message Protocol (ICMP) is a network layer protocol that
transmits message packets to report errors in processing IP packets. ICMP
is therefore an integral part of the Internet Protocol. ICMP messages may
be used to report various situations, such as when a datagram cannot reach
its destination, when the gateway does not have the buffering capacity to
forward a datagram, and when the gateway can direct the host to send
traffic on a shorter route. ICMP is also used by routers to feed back
information about more suitable routes (i.e., the next hop router) to use
for a specific destination.
Statistical Values
Parameter Description
Messages The total number of ICMP messages which the entity
received/sent.
Errors The number of ICMP messages which the entity
received/sent but determined as having ICMP-specific
errors (bad ICMP checksums, bad length, etc.).
Destination
Unreachable
The number of ICMP Destination Unreachable
messages received/sent.
Time Exceeded The number of ICMP Time Exceeded messages
received/sent.
Parameter Problems The number of ICMP Parameter Problem messages
received/sent.
Source Quenches The number of ICMP Source Quench messages
received/sent.
Redirects The number of ICMP Redirect messages received/sent.
Echos The number of ICMP Echo (request) messages
received/sent.
Echo Replies The number of ICMP Echo Reply messages received/
sent.
Timestamps The number of ICMP Timestamp (request) messages
received/sent.