Patent ID: 7974315

Claim:
A method for implementing synchronization of link state database (LSDB), comprising: receiving a link state advertisement (LSA) message; and comparing the LSA message with an LSA message in a LSDB, updating the LSA message in the LSDB when recognizing that the LSA message received is a new message by comparing, and transmitting the LSA message received to a virtual neighbor which has established a virtual neighborhood; wherein the establishment of the virtual neighborhood further comprises: creating a virtual interface among an active master board (AMB), a standby master board (SMB), and a line card (LC); and establishing the virtual neighborhood via the virtual interface, wherein establishing the virtual neighborhood via the virtual interface comprises at least one of the following steps: according to device management information, transmitting the LSA message mutually between the AMB, the SMB and the LC via the virtual interface, and creating the virtual neighborhood, according to the LSA message received; and after transmitting a neighbor discovery message and a database description message mutually between the AMB, the SMB, and the LC via the virtual interface, transmitting the LSA message mutually, and creating the virtual neighborhood, according to the LSA message received.