Tunnel protection method, system, local repair point and computer readable storage medium

Abstract

The invention discloses a tunnel protection method, a system, a local repair point and a computer-readable storage medium, and relates to the field of data communication. The tunnel protection method includes: the local repair point configures label forwarding entries, wherein the label forwarding entries include nodes based on the main path of the label distribution protocol LDP label and nodes of the backup path based on the segment routing SR label, and the local repair point supports LDP label distribution method and SR label distribution method; when the protection link corresponding to the local repair point fails, the local repair point forwards the service flow according to the node of the backup path in the label forwarding entry, so that the node of the backup path forwards the service flow based on the SR label . The embodiment of the present invention can switch the service flow to the SR label forwarding mode when the protected link fails, without adding a new protocol, thereby simplifying the network operation and maintenance operation without affecting the normal forwarding of the service flow.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a tunnel protection method, system, local repair point and computer-readable storage medium. Background technique [0002] In a Multi-Protocol Label Switching (MPLS for short) network, the fast rerouting (Fast Reroute, FRR) method is usually used to implement link protection for key services, which needs to be repaired at the local point of local A target-based Label Distribution Protocol (Targeted Label Distribution Protocol, T-LDP) session is configured between Repair, PLR for short) and the remote repair endpoint, and forwarding is performed based on two layers of MPLS labels. in such as figure 1 In the shown link, the key service flow from the node PE1 to the node PE2 passes through the link BA, and FRR link protection needs to be performed on the link BA. Configure a T-LDP session between the local repair point node B and the remote repair end point D, and publish the MPL...

AI Technical Summary

Problems solved by technology

Due to the high requirements for the control plane of the related equipment, the existing technology not only increases the operation and maintenance of the network, but also puts forward higher requirements for the control plane and the forwarding plane of the equipment.

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