CLI Reference Guide-R04

Chapter 27 | CFM Commands
Link Trace Operations
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◆ When using the command line or web interface, the source MEP used by to
send a link trace message is chosen by the CFM protocol. However, when using
SNMP, the source MEP can be specified by the user.
Example
This example sends a link trace message to the specified MEP with a maximum hop
count of 25.
Console#ethernet cfm linktrace dest-mep 2 md voip ma rd ttl 25
Console#
clear ethernet cfm
linktrace-cache
This command clears link trace messages logged on this device.
Command Mode
Privileged Exec
Example
Console#clear ethernet cfm linktrace-cache
Console#
show ethernet cfm
linktrace-cache
This command displays the contents of the link trace cache.
Command Mode
Privileged Exec
Example
Console#show ethernet cfm linktrace-cache
Hops MA IP / Alias Ingress MAC Ing. Action Relay
Forwarded Egress MAC Egr. Action
---- -------------- ----------------------- ----------------- ----------- -----
2 rd 192.168.0.6 00-12-CF-12-12-2D ingOk Hit
Not Forwarded
Console#
Table 159: show ethernet cfm linktrace-cache - display description
Field Description
Hops The number hops taken to reach the target MEP.
MA Name of the MA to which this device belongs.
IP/Alias IP address or alias of the target device’s CPU.
Forwarded Shows whether or not this link trace message was forwarded. A message
is not forwarded if received by the target MEP.
Ingress MAC MAC address of the ingress port on the target device.
Egress MAC MAC address of the egress port on the target device.