Patent ID: 8045452

Claim:
A method for handling a fault between an Egress Label Switching Router (LSR) and a data device connected with the Egress LSR, comprising: binding, by the Egress LSR, an Egress Work link between the Egress LSR and the data device connected with the Egress LSR and a Work Label Switching Path (LSP) between an Ingress LSR and the Egress LSR into one link; transmitting, by the Egress LSR, fault information to the ingress LSR after detecting a fault of the Egress Work link between the Egress LSR and the data device connected with the Egress LSR; and adjusting, by the Ingress LSR, a service flow transmission from the Ingress LSR to the data device according to the received fault information, wherein an Egress Protect link is existent between the Egress LSR and the Egress data device connected with the Egress LSR, wherein adjusting the service flow transmission by the Ingress LSR comprises, the Ingress LSR transmitting the service flow to the Egress LSR, and the Egress LSR transmitting the service flow to the data device through the Egress Protect link, wherein a Protect LSP is existent between the Ingress LSR and the Egress LSR, and wherein for transmitting the service flow to the Egress LSR by the Ingress LSR, the service flow is transmitted to the Egress LSR through the Protect LSP.