Method and network equipment for establishing lsp

Abstract

The embodiment of the present invention discloses a method for establishing an LSP and a network device, including: the first network device generates a first Path message based on RSVP‑TE, the first Path message carries the address of the second network device, and the first Path message uses In order to request to set up the first LSP based on RSVP-TE from the first network device to the second network device; the first network device sends a first Path message to the second network device to establish the first LSP, and the first Path message also carries the target network The address of the device, so that the second network device can bond the first LSP and the second LSP according to the address of the target network device, and then form the third LSP from the first network device to the target network device end-to-end, and the second LSP It is the pre-established LSP between the second network device and the target network device. The technical solution provided by the embodiment of the present invention is beneficial to realize the integration of MPLS TE-based IP RAN and IP backbone network.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for establishing a Label Switch Path (Label Switch Path, LSP) and network equipment. Background technique [0002] Seamless (Seamless) Multi-Protocol Label Switching (Multi-Protocol Label Switching, MPLS) networking refers to all network protocol (Internet Protocol, IP) devices managed by operators, including access (fixed and / or mobile), aggregation, The networking mode of the unified IP / MPLS control plane formed by the backbone equipment. In the current SeamlessMPLS-based IP radio access network (Radio Access Network, RAN) solution, when the access network is integrated with the IP backbone network, the access network mainly uses the Label Distributed Protocol (LDP) The established LSP is glued to the Border Gateway Protocol (BGP) LSP established by the IP backbone network, thereby completing the integration of the IP RAN access network and the IP backbone network. ...

AI Technical Summary

Problems solved by technology

Since LSPs established through MPLS Traffic Engineering (Traffic Engineering, TE) have rich TE attributes and can realize functions such as automatic bandwidth adjustment, it is an inevitable trend to use MPLS TE to establish LSPs in the access network of IP RAN. The technical solution of bonding the LSP of Resource Reservation Protocol-Traffic Engineering (RSVP-TE) and the LSP established by the IP backbone network is not conducive to the realization of the access network and IP backbone of IP RAN based on MPLS TE Network Convergence

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