Virtual private topology control method, device and system

Abstract

The embodiment of the invention relates to the field of communication, and discloses a virtual private topology control method, a virtual private topology control device and a virtual private topology control system. The method comprises the following steps of: receiving a message transmitted by customer edge equipment, wherein the message comprises a source media access control (MAC) address anda destination MAC address of the message; when an out port of the message corresponds to a pseudo wire, determining whether to send the message out according to the source MAC address and the destination MAC address in the message and an operation matching table of the message; and if the message is determined to be sent out, sending the message to operator edge equipment at the destination end of the message. The method, the device and the system are mainly used in a process of the virtual private topology control, and can realize the virtual private topology control and simultaneously avoidsending an unnecessary message into a network, thereby saving network sources.

Description

technical field [0001] The invention relates to the communication field, in particular to a virtual private network topology control method, device and system. Background technique [0002] Traditional LANs use shared media to connect hosts, but some hosts that want to form a LAN are distributed in different regions, and these different regions are connected through a WAN (Wide Area Network, wide area network). In order to connect a group of site hosts distributed in different regions, there is a need to use WAN to virtualize a local area network. A VPN (Virtual Private Network, Virtual Private Network) technology was proposed thereupon. VPLS (Virtual Private LAN Service, virtual private LAN service) is to use the shared communication network to provide virtual Ethernet local area network services. ) is a service that allows users to simultaneously access the network from multiple geographically dispersed points and access each other, just as these points are directly conn...

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the above virtual private network topology control, the inventors found that at least the following problems exist in the prior art: because the PE at the source end of the sending message does not know whether the PE at the destination end has a root (root) port

When there is no root port at the destination end of the packet, and the source port of the packet is also a leaf port, the packet will be discarded at the destination PE, but the packet is still transmitted on the network, resulting in a waste of network resources.

In practical applications, the number of root ports is small, and many PEs only have leaf ports. This kind of waste of network resources is more prominent.

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