MAC (Multi-Access Computer) addresses learning method and device in virtual private local area network service (VPLS) network

Abstract

The invention provides an MAC (Multi-Access Computer) addresses learning method in a virtual private local area network service (VPLS) network, which is applied to a provider edge (PE) router. The method comprises the following steps of: setting a source MAC address learned from a received access control (AC) side message and a source MAC address learned from a received far-end pseudo wire (PW) side message with a known unicast MAC as a target MAC address to be related MACs, and setting the ageing time of a table entry of the related MACs to be normal ageing time; and setting a source MAC address learned from the received PW side message, with the target MAC address being broadcast, multicast or unknown unicast, to be an unrelated MAC, and setting the ageing time of the table entry of theunrelated MAC to be preset time, wherein the preset time is smaller than the normal ageing time. In the invention, the utilization rate of an MAC forwarding table in the VPLS network can be improved,and the occupation of unrelated MAC table entries can be reduced.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and device for learning a MAC address in a Virtual Private Local Area Network Service (VPLS) network. Background technique [0002] Virtual Private Local Area Network Service (VPLS) is a virtual private network technology used to implement multipoint-to-multipoint Layer 2 Virtual Private Network (VPN) functions on the public network, and is currently widely used to realize Layer 2 interconnection of multiple data centers. One of the techniques. [0003] see figure 1 , figure 1 It is a schematic diagram of a VPLS network in the prior art. PE1, PE2, and PE3 are connected to each site. Each operator's edge router (PE) device can be regarded as a virtual switch. Each PE device must learn all VPNs of each site. Media Access Control (MAC) address. [0004] In the existing technology, the VPLS network establishes a virtual link (PW) between each site (SITE) of...

AI Technical Summary

Problems solved by technology

[0019] With the development of Layer 2 interconnection in the data center, more and more devices will be connected to each PE. According to the current MAC address learning method, as long as there are many broadcast packets or unknown unicast packets, all MAC addresses in the VPN will be consumed. The MAC table item resource of the PE device causes unnecessary occupation of the MAC table item in the PE device

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