Supported Instances for CFM

The following table displays the CFM support in ExtremeXOS.

ExtremeXOS CFM Support

Item	Limit	Notes
Domains	8	Per switch; one for each MD level
Associations (MAs)	256	Per switch
UP MEPs	32 on Summit Family switches, SummitStack, E4G-200, E4G-400, BDx8, and BlackDiamond 8000 series modules.	Per switch
DOWN MEPs	256 hardware-placed MEPs¹ on Summit series X460, E4G-400, E4G-200 (non-load shared ports) 32 on Summit series X460, E4G-400, E4G-200 (load shared ports) 32 on other Summit family switches, BDx8, and BlackDiamond 8000 series	Per switch
MIPs	32 on Summit Family switches, SummitStack, BDx8, and BlackDiamond 8000 series modules.	Per switch
Total CFM ports	128	Per switch; total number of all ports for all service instances assigned to an MA (see command for ports configured for CFM)
Entries in the CCM database	2000	Number of remote end points stored in a CCM database on each MEP; 64 end points per MEP (additional CCMs discarded after this limit is reached)
CFM Segments	1000	Maximum number of CFM segments for Y.1731.
CFM Groups	1000	Maximum number of CFM groups.

Note

The total number of CFM ports is a guideline, not a limit enforced by the system.

¹ RMEPs need to be explicitly configured for hardware MEPs. Unlike software MEPs, hardware MEPs do not support dynamic RMEP learning.