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1. (WO2017168216) EFFICIENT METHOD TO AGGREGATE CHANGES AND TO PRODUCE BORDER GATEWAY PROTOCOL LINK-STATE (BGP-LS) CONTENT FROM INTERMEDIATE SYSTEM TO INTERMEDIATE SYSTEM (IS-IS) LINK-STATE DATABASE

Pub. No.:    WO/2017/168216    International Application No.:    PCT/IB2016/053149
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Sat May 28 01:59:59 CEST 2016
IPC: H04L 12/751
H04L 12/715
H04L 12/741
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventors: AMMIREDDY, Amarnath
CHUNDURI, Uma S.
PATIL, Vasant S.
Title: EFFICIENT METHOD TO AGGREGATE CHANGES AND TO PRODUCE BORDER GATEWAY PROTOCOL LINK-STATE (BGP-LS) CONTENT FROM INTERMEDIATE SYSTEM TO INTERMEDIATE SYSTEM (IS-IS) LINK-STATE DATABASE
Abstract:
A method is implemented by a network device functioning as a Border Gateway Protocol (BGP) speaker to transmit aggregated link-state information pertaining to a network in which the network device operates to a peer BGP speaker. The method includes storing, in a link-state database, node entries representing nodes in the network, fragment entries representing fragments received from nodes in the network, and link/prefix entries representing links/prefixes in the network. Each link/prefix entry is assigned a state from a possible set of states, where the possible set of states include a new entry state, a modified entry state, a deleted entry state, and an unmodified entry state. The method further includes determining link-state information to transmit to the peer BGP speaker based on a state assigned to a link/prefix entry, and transmitting the determined link-state information to the peer BGP speaker.