Patent ID: 7768925

Claim:
A method of domain supervision in a label switched network, comprising: designating at least one Operation and Maintenance (OAM) domain on a Label Switched Path (LSP) in the label switched network; determining an ingress node and an egress node of the OAM domain; inserting in-domain OAM frames containing supervision information at the ingress node of the OAM domain; receiving and parsing, by the egress node of the OAM domain, the in-domain OAM frames; and managing the OAM domain according to the supervision information contained in the in-domain OAM frames of the OAM domain, wherein said determining the ingress node of the OAM domain comprises: determining whether a last-hop node of each node in the OAM domain belongs to an OAM domain other than the OAM domain; and if the last-hop node of a node belongs to another OAM domain, determining that the node is the ingress node of the OAM domain; and wherein said determining the egress node of the OAM domain comprises: determining whether a next-hop node of each node in the OAM domain belongs to an OAM domain other than the OAM domain; and if the next-hop node of a node belongs to another OAM domain, determining that the node is the egress node of the OAM domain.