Method and apparatus for allocating backbone VLAN identifiers

摘要

Methods and apparatuses for allocating backbone virtual local area network identifiers (BVIDs) to connection requests in a provider backbone bridging-traffic engineering (PBB-TE) network are described. During operation, a system (e.g., a network management system) can receive a set of connection requests for a set of connections that are desired to be set up in the PBB-TE network. Next, the system can allocate a BVID to each connection request in the set of connection requests so that, once the set of connection requests are set up in the PBB-TE network, conflicting connections in the PBB-TE network have different BVIDs.

主权项

1. A method for allocating backbone virtual local area network identifiers (BVIDs) to connection requests in a provider backbone bridging-traffic engineering (PBB-TE) network, the method comprising:
receiving a set of connection requests for a set of connections that are desired to be set up in the PBB-TE network; and allocating a BVID to each connection request in the set of connection requests so that, once the set of connection requests are set up in the PBB-TE network, conflicting connections in the PBB-TE network have different BVIDs, wherein said allocating comprises:
determining a path from a source node to a destination node associated with the connection request;selecting a BVID;determining a first sub-network of the PBB-TE network such that each link in the first sub-network carries one or more connections that are associated with the selected BVID;determining a second sub-network by performing a union of the path and the first sub-network; andin response to determining that the second sub-network does not contain a cycle, allocating the selected BVID to the connection request.