The advertised administrative forwarding status bit of active/standby reflects the status of the local LAG SAP in MC-LAG application. If the SAP is not part of an MC-LAG instance, the forwarding status of active is always advertised.
If the SAP in endpoint X is part of an MC-LAG instance, a node must send a T-LDP forwarding status bit of SAP active/standby over all Y endpoint spoke-SDPs, except the ICB spoke-SDP, whenever this status changes. The status bit sent over the ICB is always zero (active by default).
If the SAP in endpoint X is not part of an MC-LAG instance, then the forwarding status sent over all Y endpoint spoke-SDPs should always be set to zero (active by default).