CpdV2Mac0CDispType is a read-write setting on the Ethernet network-facing (NNI/trunk) port that selects the disposition (locally processed, dropped, passed through, or L2PT-tunneled) applied specifically to frames sent to the reserved bridge-block multicast address 01:80:C2:00:00:0C. Because this address is one of the individually addressable slots inside the old grouped 'reserved MAC range' control, it lets an administrator carve out an exception for whatever vendor protocol happens to use 01:80:C2:00:00:0C without changing the disposition of the other reserved addresses. On the network-facing trunk port linking to the next carrier NE, an operator would set this object individually if a piece of attached equipment sends control frames to 01:80:C2:00:00:0C that need different handling than its neighbors in the reserved block.