Extreme Networks EAS 200-24p Switch CLI Manual page 294

Chapter 17: Connectivity Fault Management Command List
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To transmit a LBM:
EAS 200-24p:admin# cfm loopback 00-01-02-03-04-05 mepname mep1
Command: cfm loopback 00-01-02-03-04-05 mepname mep1
Request timed out.
Request timed out.
Reply from MPID 52: bytes=xxx time=xxxms
Request timed out.
CFM loopback statistics for 00-01-02-03-04-05:
Packets: Sent=4, Received=1, Lost=3(75% loss).
EAS 200-24p:admin#
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Extreme Networks EAS 200-24p Switch CLI Manual