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1. (WO2014202004) NEXT HOP INGRESS PROTECTION OF LABEL SWITCHED PATHS

Pub. No.:    WO/2014/202004    International Application No.:    PCT/CN2014/080218
Publication Date: Thu Dec 25 00:59:59 CET 2014 International Filing Date: Thu Jun 19 01:59:59 CEST 2014
IPC: H04L 12/723
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
Inventors: CHEN, Huaimao
Title: NEXT HOP INGRESS PROTECTION OF LABEL SWITCHED PATHS
Abstract:
A network node for providing ingress fault protection. The network node may be along a primary label switched path (LSP) and may be configured to receive an ingress protection request message that identifies one or more other network nodes along the primary LSP. The network node may generate a forwarding table that comprises one or more forwarding entries for the other network nodes along the primary LSP and one or more forwarding entries for the other network nodes along a backup LSP. In typical operation, the network node may receive data traffic from a first source path within a label switched network and may send the data traffic using the primary LSP. When an ingress node fault in the first source path is present, the network node may receive data traffic from a second source path and may send the data traffic using the backup LSP.