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Method and device for learning media access control (MAC) addresses in virtual private lan service (VPLS) networks

A technology of MAC address and learning method, applied in data exchange network, digital transmission system, electrical components and other directions, can solve the problem of wasting labels and other problems, and achieve the effect of saving label resources

Active Publication Date: 2013-02-13
XINHUASAN INFORMATION TECH CO LTD
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  • Abstract
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Problems solved by technology

[0019] This application provides a MAC address learning method and device in a VPLS network to solve the problem of wasting labels in the prior art

Method used

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  • Method and device for learning media access control (MAC) addresses in virtual private lan service (VPLS) networks
  • Method and device for learning media access control (MAC) addresses in virtual private lan service (VPLS) networks
  • Method and device for learning media access control (MAC) addresses in virtual private lan service (VPLS) networks

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Embodiment Construction

[0039] In order to solve the problem of wasting labels in the prior art, the following embodiments of the present application provide a method for learning a MAC address in a VPLS network and a PE to which the method can be applied. In the following embodiments of this application, a PE allocates only one VSI label to any VSI configured locally, and all PWs under the same VSI, that is, the PWs between this VSI and all its neighbor VSIs share the PW allocated for this VSI. The VSI label, the VSI and its neighbor VSIs belong to the same VPLS instance; then, the PE notifies all the peer PEs where the VSI neighbor VSIs are located about the binding relationship between the VSI and the VSI label allocated for the VSI. The VSI label corresponding to a VSI is used to find out which VSI corresponds to the VSI label when the PE receives an incoming packet carrying the VSI label from the PW, so that it can pair the VSI with the MAC forwarding table of the VSI. The incoming message is fo...

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Abstract

The invention discloses a method and a device for learning MAC addresses in VPLS networks. The method includes that a first preinstallation environment (PE) is any local virtual switch interface (VSI), and a first VSI only distributes a first VSI label which informs a binding relationship between the first VSI and the first VSI label to a second PE in a unicast mode; and the first PE learns a first MAC address from a first access controller (AC) associated with the first VSI and sends a first MAC notification message carrying the first MAC address and used for indicating a first forward error correction (FEC) message of first (packet writing) PW to the second PE in a unicast mode, so that the second PE can add an MAC forwarding entry corresponding to the first MAC address in an MAC address forwarding table of a second VSI, an output interface corresponding to the first MAC address in the MAC forwarding entry is the first PW indicated by the first FEC, and the first PW is a PW between the first PW and the first VSI. According to the method and the device for learning MAC addresses in VPLS networks, label resources are saved greatly.

Description

technical field [0001] The present application relates to the technical field of data communication, in particular to a method and device for learning MAC addresses in a VPLS network. Background technique [0002] In order to achieve high reliability and redundant deployment, most of today's enterprise networks and their data centers span multiple physical sites (Sites) in different geographical locations, deploy similar services at these sites, and perform secondary operations between these sites. layer interconnection. In order to achieve dynamic allocation and management of resources between sites, virtual machines must be able to migrate freely between data center sites. Since the virtual machine migration process is transparent to users and cannot change IP addresses, it is necessary to implement dual layer network interconnection. VPLS is a main technology for implementing Layer 2 network interconnection. [0003] VPLS (Virtual Private LAN Service, Virtual Private L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/723H04L45/50
Inventor 付志华
Owner XINHUASAN INFORMATION TECH CO LTD
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