Edge-Core ECS4110-28T Management Manual page 1379

This command sends CFM link trace messages to the MAC address of a
ethernet cfm
remote MEP.
linktrace
S
YNTAX
ethernet cfm linktrace {dest-mep destination-mpid | src-mep
D
EFAULT
None
C
OMMAND
Privileged Exec
C
OMMAND
◆ Link trace messages can be targeted to MEPs, not MIPs. Before sending
a link trace message, be sure you have configured the target MEP for
the specified MA.
If the MAC address of target MEP has not been learned by any local
◆
MEP, then the linktrace may fail. Use the
maintenance-points remote crosscheck
address has been learned for the target MEP.
Link trace messages (LTMs) are sent as multicast CFM frames, and
◆
forwarded from MIP to MIP, with each MIP generating a link trace reply,
up to the point at which the LTM reaches its destination or can no
longer be forwarded.
Link trace messages are used to isolate faults. However, this task can
◆
be difficult in an Ethernet environment, since each node is connected
through multipoint links. Fault isolation is even more challenging since
the MAC address of the target node can age out in several minutes.
This can cause the traced path to vary over time, or connectivity lost if
faults cause the target MEP to be isolated from other MEPs in an MA.
source-mpid {dest-mep destination-mpid | mac-address} |
mac-address} md domain-name ma ma-name [ttl number]
destination-mpid – The identifier of a remote MEP that is the target
of the link trace message. (Range: 1-8191)
source-mpid – The identifier of a source MEP that will send the link
trace message. (Range: 1-8191)
mac-address – MAC address of a remote MEP that is the target of
the link trace message. This address can be entered in either of the
following formats: xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx
domain-name – Domain name. (Range: 1-43 alphanumeric
characters)
ma-name – Maintenance association name. (Range: 1-43
alphanumeric characters)
number – The time to live of the linktrace message. (Range: 1-255
hops)
S
ETTING
M
ODE
U
SAGE
– 1379 –
| CFM Commands
C 42
HAPTER
Link Trace Operations
show ethernet cfm
command to verify that a MAC