Alcatel-Lucent 6850-48 参考指南

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页码 3444
IP Commands
page 32-128
OmniSwitch CLI Reference Guide
September 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 6400, 6850, 6855, 9000, 9000E
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.