Virtual private LAN service communication method and device

Abstract

The invention discloses a virtual private LAN service (VPLS) communication method and a device, which relate to provider edge equipment (PE). The method comprises the following steps: assigning the same VLAN for VPNs requiring the realization of interconnection after the configuration of a plurality of VPNs by the PE, and using the internal VLAN as a mark of a broadcasting domain; checking the VLAN inside the VPN when receiving the massage of the VPN by the PE, and transferring or broadcasting the massage according to the internal VLAN and the target MAC of the message; and carrying out MAC address study and / or MAC drift processing according to the internal VLAN and the source MAC of the message. The invention can conveniently realize the intercommunication between the VPNs in the VPLS network, and the building flexibility of the VPLS network is improved, so the diversification requirement of users can be met.

Description

technical field [0001] The present invention relates to the realization of the two-layer virtual private network (VPN, Virtual Private Network) service based on Multi-Protocol Label Switching (MPLS, Multi-ProtocolLabel Switching) in data communication, especially relate to the realization of the virtual private local area network service (VPLS, Virtual Private LAN Service ) method and device for mutual communication between network VPNs. Background technique [0002] Traditional VPN, due to its shortcomings such as high service cost, poor scalability, and complicated maintenance and management, has increasingly become a bottleneck for the development of operators' networks. MPLS uses label switching technology to provide connection-oriented data transmission, has security similar to ATM (Asynchronous Transfer Mode) and Frame Relay (FR, Frame Relay) networks, and can provide VPN services. MPLS technology realizes the automatic label distribution of low-level protocols, and c...

AI Technical Summary

Problems solved by technology

[0007] However, at present, VPLS technology faces problems such as immature protocol and lack of standardization, and some problems encountered in practical applications have not yet been resolved

For example, the intercommunication between VPNs in the VPLS network affects the flexibility of the VPLS network to a certain extent.

[0008] like figure 1 VPN1 and VPN2 are two VPNs. When the users of VPN1 and VPN2 need to communicate with each other, the usual method is to delete VPN1 and VPN2 respectively, and then create a new VPN, and add the users of the original VPN1 and VPN2 to the new VPN. VPN, so as to realize the intercommunication between users in the original VPN1 and VPN2. This method is cumbersome and complicated to configure, which is not conducive to user operation and management.

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