VLANs without member ports

If a VLAN is attached to an I-SID there must be another instance of that same I-SID in the SPBM network.

If the device acts as a BCB with two VLANs configured and two I-SIDs, there must be a UNI side with the corresponding I-SID existing in the network.

If the device acts as both BEB and BCB, then there must be a member port in that VLAN to push out the UNI traffic.