IP Commands
page 29-106 OmniSwitch 6250 CLI Reference Guide November 2009
show icmp statistics
Displays Internet Control Message Protocol (ICMP) statistics and errors. ICMP is a network layer proto-
col within the IP protocol suite that provides message packets to report errors and other IP packet process-
ing information back to the source. ICMP generates several kinds of useful messages, including
Destination Unreachable, Echo Request and Reply, Redirect, Time Exceeded, and Router Advertisement
and Solicitation. If an ICMP message cannot be delivered, no second one is generated. This is to avoid an
endless flood of ICMP messages.
show icmp [statistics]
Syntax Definitions
statistics Optional syntax.
Defaults
N/A
Platforms Supported
OmniSwitch 6250
Usage Guidelines
Use the ICMP Table to monitor and troubleshoot the switch.
Examples
-> show icmp
Messages Received Sent
-------------------------+-----------+------------
Total 2105 2105
Error 0 0
Destination unreachable 0 0
Time exceeded 0 0
Parameter problem 0 0
Source quench 0 0
Redirect 0 0
Echo request 2105 0
Echo reply 0 2105
Time stamp request 0 0
Time stamp reply 0 0
Address mask request 0 0
Address mask reply 0 0
output definitions
Total Total number of ICMP messages the switch received or attempted to
send. This counter includes all those counted as errors.
Error Number of ICMP messages the switch sent/received but was unable to
process because of ICMP-specific errors (e.g., bad ICMP checksums,
bad length).
Destination unreachable Number of “destination unreachable” messages that were sent/received
by the switch.
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