Patent ID: 9444721
Filing Date: 2016-09-13
CPC Classification: H04L,H04W

Claim Text:
1. A method comprising: communicating, in accordance with a layer three link state protocol, link state advertisements (LSAs) between a plurality of layer three routers coupled to an intermediate layer two shared access network, wherein the link state advertisements specify a set of outbound cost metrics representative of respective outbound costs to send network traffic to the intermediate layer two shared access network for each of the plurality of layer three routers and a set of inbound cost metrics representative of respective inbound costs to receive network traffic for each of the plurality layer three routers from the intermediate layer two shared access network; computing, with a first one of the plurality of layer three routers, a total cost metric for each link through the intermediate layer two shared access network that originates at the first one of the plurality of layer three routers and terminates at each remaining one of the plurality of layer three routers based on one of the outbound cost metrics for the first one of the plurality of layer three routers and the corresponding inbound cost metrics for each of the remaining ones of the plurality of layer three routers; performing path selection based on the total cost metrics; and forwarding network traffic based on the path selection.