Access method and device of multiprotocol label switching double-layer virtual private network

Abstract

The invention discloses an access method and a device of multiprotocol label switching double-layer virtual private network. The method comprises the following steps: a user side and a network side respectively access respective message into operator route equipment; the access type mapping of the message is a virtual port, and each access is distributed with respective SVP port and DVP port; and the user side and the network side build a data forwarding path of a multiprotocol label switching double-layer virtual private network by building the connection of respective SVP port to opposite side DVP port. The invention maps various access modes into the virtual port in a unified mode, and accesses MPLS L2VPN in and forwards on the basis of VSI and VP. The invention enhances the expandability for user messages to access into L2VPN, lowers L2VPN access management complexity and system development difficulty and improves system reliability.

Description

technical field [0001] The present invention relates to the field of network interconnection, and more specifically relates to an access method and device for an MPLS L2VPN (Multi-Protocol Label Switching Layer 2 Virtual Private Network). Background technique [0002] With the rapid development of the Internet, in order to meet the needs of different users and different types of business traffic to access IP networks, different networking technologies need to be used; Ethernet is widely used at present, but it is a local area network technology, but many large enterprises The branches of the company are distributed in different locations, which requires the use of a network technology to interconnect them together and ensure a certain degree of privacy. At present, MPLS L2VPN is generally used to complete. like figure 1 shown. The following takes the communication process of the message sent by CE1 (Customer Edge, user edge device) in the MPLS L2VPN network as an example ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method and device for accessing a multi-protocol label switching layer 2 virtual private network, by uniformly mapping multiple access types of user messages into a virtual port (Virtual Port), and then by The virtual port is connected to MPLS L2VPN, which solves the problems of poor access scalability and complex equipment in the current direct access to L2VPN

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