The existing output places a ! next to a CFM monitored ring port if the CFM indicates the MEP group for that port is down.
# sh eaps EAPS Enabled: Yes EAPS Fast-Convergence: Off EAPS Display Config Warnings: Off EAPS Multicast Add Ring Ports: Off EAPS Multicast Send IGMP Query: On EAPS Multicast Temporary Flooding: Off EAPS Multicast Temporary Flooding Duration: 15 sec Number of EAPS instances: 1 # EAPS domain configuration : ---------------------------------------------------------------------------- Domain State Mo En Pri Sec Control-Vlan VID Count Prio ---------------------------------------------------------------------------- d2 Failed M Y !41 31 v2 (101 ) 1 N ---------------------------------------------------------------------------- Flags : (!) CFM Down