Patent ID: 9729451
Date: 2017-08-08
CPC Classifications: H04L

Claim:
1. A method comprising: configuring a hub router acting as a hub in a hub-and-spoke network to utilize a separate instance of a multi-instance version of a link state protocol to communicate with each of a plurality of spoke routers of the hub-and-spoke network, each separate instance of the multi-instance version of the link state protocol corresponding to a different routing domain and including the hub router and a different one of the plurality of spoke routers; identifying to which of the separate instances each of the link state advertisements corresponds based on a source router identifier and a destination router identifier specified by each of the link state advertisements and not based on a separate instance identifier; and processing, by the hub router, link state advertisements from the separate instances of the multi-instance version of the link state protocol to update a portion of a representation of a topology of the hub-and-spoke network corresponding to the separate instances identified by the source router identifier and the destination router identifier specified by each of the link state advertisements.