ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ExtremeWare XOS 11.5 Command Reference Guide
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Commands for Connectivity Fault Management
Connectivity Fault Management (CFM), discussed in the emerging IEEE 802.1ag specification, allows
you to detect, verify, and isolate connectivity failures in virtual bridged LANs. Part of this specification
is a toolset to manually check connectivity, which is sometimes referred to as Layer 2 ping.
NOTE
The ExtremeWare XOS implementation of CFM is based on draft 4.1 of the IEEE 802.1ag standard.
You create hierarchical networks, or domains, and test connectivity within that domain by sending
Layer 2 messages, known as Connectivity Check Messages (CCMs). You use these domains to send
loopback messages and link trace messages.
NOTE
CFM is available only on the BlackDiamond 10808 and 12804 switch.