Patent ID: 9319305
Filing Date: 2016-04-19
CPC Classification: H04L

Claim Text:
1. In a network node, a method for providing ingress fault protection in a label switched network, the method comprises: receiving path information that identifies one or more other network nodes along a primary label switched path (LSP); creating a backup LSP to the other network nodes; generating one or more forwarding entries along the backup LSP, wherein the forwarding entries along the backup LSP comprise a status identifier that indicates an active state when data traffic is being sent using the backup LSP and an inactive state when data traffic is not being sent using the backup LSP; communicating data traffic from a first source path to one or more of the other network nodes; receiving data traffic from a second source path in response to an ingress node failure of the first source path; and sending the data traffic from the second source path using the forwarding entries and the backup LSP, wherein the network node is a member of the primary LSP.