MPLS (Multiple Protocol Label Switching) L2VPN (Layer 2 Virtual Private Network) service information transmission method and device

Abstract

The invention discloses an MPLS (Multiple Protocol Label Switching) L2VPN (Layer 2 Virtual Private Network) service information transmission method and device applicable to an MPLS network. A PE (provider edge) device establishes connection with at least one P device in a backbone network; all the backbone network P devices form full connection; and each backbone network P device maintains a first association list which is used for recording the PE device and the backbone network P device connected with the PE device. The method comprises steps as follows: the backbone network P device receives an L2VPN / VPLS (Virtual Private Lan Service) related interaction message transmitted by the PE device connected with the backbone network P device, wherein the L2VPN / VPLS related interaction message carries an opposite terminal PE device identification of the PE device; and the backbone network device inquires a target backbone network P device connected with the opposite terminal PE device according to the first association list maintained by the backbone network device, and forwards the message to the inquired target backbone network P device, so that the target backbone network P device transmits the message to the PE device connected with the target backbone network P device. The invention can reduce full connection among the PE devices, and lower the PE device performance requirements.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and equipment for transmitting MPLS L2VPN service information. Background technique [0002] MPLS L2VPN provides Layer 2 VPN (Virtual Private Network, virtual private network) services based on MPLS (Multiprotocol Label Switching) network, enabling operators to provide Layer 2 VPN (Virtual Private Network) services based on different data link layers on a unified MPLS network. Layer VPN, including ATM (Asynchronous Transfer Mode, Asynchronous Transfer Mode), FR (Frame Relay, Frame Relay), VLAN (Virtual Local Area Network, Virtual Local Area Network), Ethernet (Ethernet), PPP (Point to Point Protocol, point-to-point agreement), etc. Simply put, MPLS L2VPN is to transparently transmit user Layer 2 data on the MPLS network. From the user's point of view, the MPLS network is a Layer 2 switching network, which can establish Layer 2 connections between differe...

AI Technical Summary

Problems solved by technology

With the continuous increase of sites, the number of neighbors will increase, so the performance requirements that PEs need to bear will continue to rise, which will reduce the business processing speed

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