Patent ID: 8681823

Claim:
A method for label distribution protocol-interior gateway protocol (LDP-IGP) synchronization on a broadcast network performed on a network element, the method comprising: detecting that a broadcast interface of the network element has become operational, wherein the broadcast interface will be used to carry traffic through a label switched path (LSP) between the network element and the broadcast network; determining whether the broadcast interface is a cut-edge interface, wherein the broadcast interface is a cut-edge interface if there is no alternate path to reach the broadcast network; in response to determining that the broadcast interface is a cut-edge interface: including the broadcast interface in a link state advertisement (LSA), and transmitting the LSA to the broadcast network; and in response to determining that the broadcast interface is a not cut-edge interface: postponing an update to an LSA for a period of time such that the network element expects label distribution protocol (LDP) to be operational with all LDP peers on the broadcast interface, including the broadcast interface in the LSA, and transmitting the LSA to the broadcast network.