Patent ID: 8588099

Claim:
A method for inheriting an attribute of a Forwarding Adjacency (FA) in a multilayer network, the multilayer network adopting an upper layer signaling triggered model to set up the FA, and the method for inheriting the attribute comprising: a) a path compute element returning information of a first attribute of each link on a Forwarding Adjacency Label Switched Path (FA LSP) included in a computed path in a path computation reply message to an upper layer head node initiating the inquiry, wherein, the first attribute of each link is any one or any combination of a Traffic Engineering (TE) cost, a FA LSP protection attribute and a shared risk link group attribute; the upper layer head node initiating connection setup according to a path of the path computation reply message; b) a head node on the FA LSP constructing the first attribute of the FA according to the information of the first attribute of each link on the FA LSP included in a path message sent from a upstream node, storing the first attribute of the FA and sending information of the first attribute of the FA to a tail node on the FA LSP by the path message; and c) the tail node on the FA LSP obtaining the information of the first attribute of the FA from said path message and storing the information of the first attribute of the FA.