Setting SenderID TLV Permission

You configure the ID permission setting for the content sent in the SenderID TLV by the maintenance points. Given that CFM PDUs can pass through domains owned by organizations to which you may not want topology information exposed, use the ID permission settings to configure an appropriate permission level for the monitored service. The value CFM will use depends upon the context and precedence of the values configured. ID permission can be configured in CFM command modes: Default MD, Default MD VLAN, MD, MA-Comp configuration mode. The modes here are listed in precedence from lowest to highest. Configuring ID permission in MA-Comp configuration mode takes precedence over any other CFM configuration mode for the current MA context.

Enabling ID permission includes in PDUs sent by a maintenance point (MIP or MEP) informational TLVs that identify the bridge by chassis, remote management or both.

You can specify:

• Chassis – Includes the chassis‘ MAC address in the TLV
• Manage – Includes the method of remote management in the TLV
• Both – Includes both chassis and manage information in the TLV
• None – No SenderID TLV is sent
• Defer – In a VLAN default or MA component context, the SenderID TLV behavior defers to the next highest configuration level settings.

The defer option is only valid in the Default Maintenance Domain VLAN service context, the (named) Maintenance Domain context, or the Maintenance Association Component context. When defer is used in the:

• Default MD VLAN service context, the id-permission value defaults to the value set for the default MD
• MA component context, the id-permission value defaults to the value set for the (named) Maintenance Domain within which the MA component resides

Use the id-permission command in the appropriate mode to specify the informational content to include in the SenderID TLV. ID permission defaults to no SenderID TLVs being sent.

This example shows how to configure the maintenance points to defer to the MD setting for ID permission for the myMA1 maintenance association component context:
System(rw-config)->cfm md string-name myMD1
System(su-config-cfm-md.1)->ma string-name myMA1
System(su-config-cfm-ma.1)->ma-comp
System(su-config-cfm-macomp)->id-permission defer
System(su-config-cfm-macomp)->enable
System(su-config-cfm-macomp)->