Patent ID: 9678840
Date: 2017-06-13
CPC Classifications: G06F,H04L

Claim:
1. A method comprising: at a control entity in communication with a plurality of a border routers in a network, the plurality of border routers connecting one or more wide area networks and a local area network, generating failover entries for one or more traffic flows, wherein each failover entry includes information configured to cause a first border router, at which a wide area network interface has failed, to select a second border router specifying a backup path to be used by the first border router when the first border router determines that the wide area network interface of the first border router has failed; generating, in the failover entries, tunnel key-to-nexthop bindings to indicate, based on a tunnel key used in a header in which packets are encapsulated for forwarding via the backup path in a tunnel from the first border router to the second border router, that the packets for traffic received by the second border router via the tunnel are either to be forwarded through a wide area network interface of the second border or dropped if the wide area network interface of the second border router has failed; and sending the failover entries to each of the border routers, the failover entries further specifying how the second border router is to handle network traffic received from the first border router over the backup path.