Troubleshooting Cfm Features - Cisco ASR 920 Series Configuration Manual Ethernet Router

CFM Configuration over EFP Interface with Cross Connect Feature

Troubleshooting CFM Features

Provides troubleshooting solutions for the CFM features.
Table 10: Troubleshooting Scenarios for CFM Features
Problem
CFM configuration errors
CFM ping and traceroute result is "not found"
CFM connectivity is down and issues at the
maintenance domain levels
Loop trap error
s2
PE2#
Receive AIS
Solution
CFM configuration error occurs when when a MEP
receives a continuity check with an overlapping MPID.
To verify the source of the error, use the command
show ethernet cfm errors configuration or show
ethernet cfm errors.
Complete these steps:
1 Use show run | i ethernet cfm to view all CFM
global configurations.
2 Use show ethernet cfm statistics to view local
MEPs and their CCM statistics
3 Use trace ethernet cfm command to start a CFM
trace.
Use the ping ethernet {mac-address | mpid id |
multicast} domain domain-name { vlan vlan-id |
port | evc evc-name} or the traceroute ethernet
{mac-address | mpid id } domain domain-name {
vlan vlan-id | port | evc evc-name} commands to
verify ethernet CFM connectivity. Share the output
with TAC for further investigation.
Use the show ethernet cfm error command to check
for Loop Trap errors as shown here:
CE(config-if)#do sh ethernet cfm err
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Level Vlan MPID Remote MAC
Service ID
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
5 711 550 1001.1001.1001 Loop Trap Error
OUT
PE#sh ethernet cfm err
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Level Vlan MPID Remote MAC
Service ID
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
5 711 550 1001.1001.1001 Loop Trap Error
OUT
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
Troubleshooting CFM Features
8s
Reason
Reason
229