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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter       Configuring Ethernet Virtual Connection Bridge Domain
Connectivity Fault Management (CFM) over EVC BD
Step 6
ethernet cfm global
Example:
Router(config)# ethernet cfm global
Enables CFM processing globally on the device.
Step 7
ethernet cfm ieee
Example:
Router(config)# ethernet cfm ieee
Enables the CFM IEEE version of CFM.
• This command is automatically issued when the 
ethernet cfm global command is issued.
Step 8
ethernet cfm traceroute cache
Example:
Router(config)# ethernet cfm 
traceroute cache
Enables caching of CFM data learned through traceroute 
messages.
Step 9
ethernet cfm traceroute cache size 
entries
Example:
Router(config)# ethernet cfm 
traceroute cache size 200
Sets the maximum size for the CFM traceroute cache 
table.
Step 10
ethernet cfm traceroute cache 
hold-time minutes
Example:
Router(config)# ethernet cfm 
traceroute cache hold-time 60
Sets the amount of time that CFM traceroute cache entries 
are retained.
Step 11
snmp-server enable traps ethernet cfm 
cc [mep-up] [mep-down] [config] 
[loop] [cross-connect]
Example:
Router(config)# snmp-server enable 
traps ethernet cfm cc mep-up mep-down 
config loop cross-connect
Enables SNMP trap generation for Ethernet CFM 
continuity check events.
Step 12
snmp-server enable traps ethernet cfm 
crosscheck [mep-unknown] 
[mep-missing] [service-up]
Example:
Router(config)# snmp-server enable 
traps ethernet cfm crosscheck 
mep-unknown
Enables SNMP trap generation for Ethernet CFM 
continuity check events in relation to the cross-check 
operation between statically configured MEPs and those 
learned via CCMs.
Step 13
end
Example:
Router(config)# end
Returns the router to the privileged EXEC mode.
Command Purpose