B-42 APPENDIX B: CLI COMMAND DESCRIPTION
■ Messages - ICMP packets received.
■ Errors - ICMP packets received with errors.
■ Destination Unreachable - sum of ICMP messages received when a router
cannot forward a packet to its specified destination
■ Time Exceeded - sum of ICMP messages generated by a router when time
has exceeded or a timeout has occurred while waiting for a packet segment
■ Parameter Problems - sum of ICMP messages generated by a router
when it encounters an error
■ Source Quench - sum of ICMP messages informing a host it should slow
data transmission to ease congestion
■ Redirects - sum of ICMP messages concerning a router advertising a host
of a better next hop
■ Echos - sum of ICMP request messages received, signifying transport
system success
■ Echo Replies - sum of ICMP reply messages received, indicating transport
system success
■ Timestamps - sum of ICMP request messages received seeking time from
another machine for clock synchronization and estimated transit time
purposes
■ Timestamp Replies - sum of ICMP timestamp reply messages
■ Address Masks - sum of ICMP Address Mask Reply messages
■ Address Mask Replies - sum of ICMP request messages concerning a
host’s ability to gather network information
OUTPUT COUNTERS
■ Messages - total of ICMP messages transmitted
■ Errors - ICMP packets transmitted with errors
■ Destination Unreachable - sum of these messages sent
■ Time Exceeded - sum of these messages sent
■ Parameter Problems - sum of these messages sent
■ Source Quench - sum of these messages sent
■ Redirects - sum of these messages sent
■ Echos - sum of ICMP Echo (request) messages sent
■ Echo Replies - sum of these messages sent
■ Timestamps - sum of these messages sent
■ Timestamp Replies - sum of these messages sent
■ Address Masks - sum of these messages sent
■ Address Mask Replies - sum of these messages sent
show interface
<interface_name>
counters
Displays counters for the specified interface.
