When you configure CFM, be aware of the following configuration considerations.
A single switch has a limit of one MEP and one MIP on B-VLAN.
The maintenance level for MEPs and MIPs on a given B-VID (in a network) must be configured to the same level for them to respond to a given CFM command.
You can configure global CFM at only one MD level for each switch.
All nodal MEPs and MIPs are restricted to SPBM B-VIDs.
Autogenerated MEPs are not unique across the entire network unless you configure the global MEP ID on each switch to a different value. You must configure a unique MEP ID at a global level, for CFM.
A single switch can have only one autogenerated MEP or MIP for each B-VLAN.
Previous explicit CFM configurations of MDs, MAs and MEPs on SPBM B-VLANs continue to be supported. However, if you want to enable autogenerated CFM you must first remove the existing MEP and MIP on the SPBM B-VLAN.
You can assign maintenance levels for each CFM SPBM MEP and MIP to each SPBM B-VLAN individually or you can assign maintenance levels and global MEPs for all SPBM VLANs by following the appropriate procedure: