Patent ID: 9300563
Filing Date: 2016-03-29
CPC Classification: H04L,H04Q,Y02D

Claim Text:
1. A method comprising: configuring a plurality of links between a network node and another network node as a link bundle; establishing, by the network node, one or more standby bidirectional forwarding detection (BFD) sessions, each standby BFD session associated with one or more links of the link bundle, wherein a standby state associated with the one or more standby BFD sessions is an internal state that is not signaled in a state field of transmitted BFD messages; establishing, by the network node, an active BFD session, the active BFD session associated with one or more links of the link bundle; in response to determining non-receipt of returned BFD messages for the active BFD session, selecting one or more new active BFD sessions from the one or more standby BFD sessions; and in response to determining non-receipt of returned BFD messages for the one or more new active BFD sessions, determining that the link bundle has failed.