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MAC (Media Access Control) address withdrawing method in VPLS (Virtual Private Local Area Network Service) network and PE (Provider Edge) equipment

A MAC address and device technology, applied in data exchange network, digital transmission system, electrical components, etc., can solve problems such as forwarding path errors, and achieve the effect of avoiding unnecessary flooding and MAC re-learning

Active Publication Date: 2012-07-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The embodiment of the present invention provides a MAC address recycling method and PE equipment in a VPLS network, so as to solve the forwarding path error problem caused by the receiver PE mistrusting the sender PW when the topology changes

Method used

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  • MAC (Media Access Control) address withdrawing method in VPLS (Virtual Private Local Area Network Service) network and PE (Provider Edge) equipment
  • MAC (Media Access Control) address withdrawing method in VPLS (Virtual Private Local Area Network Service) network and PE (Provider Edge) equipment
  • MAC (Media Access Control) address withdrawing method in VPLS (Virtual Private Local Area Network Service) network and PE (Provider Edge) equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] This embodiment takes figure 2 As an example, first introduce the networking application scenario, and then describe the implementation steps of the present invention in detail.

[0090] Application scenario:

[0091] exist figure 2 In the shown H-VPLS network, UPEs are connected to NPEs through U-PWs, and NPEs are connected to NPEs through N-PWs. The NPE can send the packets received through the N-PW through the U-PW, or the packets received through the U-PW through the N-PW, but the NPE cannot transmit the packets received through the N-PW Then send it through the N-PW. The two U-PWs between the UPE and NPE1 and NPE2 form a master-backup relationship, and CE5 is connected to many end-user devices.

[0092] assumed figure 2 If the access side of the AC between CE5 and NPE1 in the shown network fails, the MAC address recycling process is as follows:

[0093] Step 301, NPE1 detects a failure on the access side with CE5, if the number of MAC addresses learned fro...

Embodiment 2

[0099] This example also uses figure 2 shown in the application scenario, assuming figure 2 The Primary PW in the fault occurs, and the specific implementation steps are as follows:

[0100] Step 401, after the UPE perceives that the Primary PW fails, it will switch to the backup (Backup) PW, and send an address recovery message carrying an empty MAC List TLV to NPE2 through the Backup PW;

[0101] Step 402, NPE2 receives the message, trusts the MAC address learned from the Backup PW, and deletes the MAC forwarding entries learned from all other PWs in this instance, that is, trusts the MAC address learned from the sender PW.

[0102] Furthermore, since the Backup PW is a U-PW, NPE2 will send this message to all other members of the VPLS instance. In this way, both NPE1 and NPE3 receive the recovery message with an empty MAC List TLV address sent by NPE2. Similarly, NPE1 trusts the slave For the MAC address received on PW2, delete the MAC addresses learned from all other P...

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Abstract

The invention provides an MAC (Media Access Control) address withdrawing method in a VPLS (Virtual Private Local Area Network Service) network and PE (Provider Edge) equipment. The MAC address withdrawing method comprises the steps: detecting that an AC link is in a fault and inquiring MAC addresses learned by an AC direct link interface, by the PE equipment; judging whether the quantity of the MAC addresses is more than a preset threshold value or not by the PE equipment, is so, encapsulating only one wildcard address in an MAC List TLV (Threshold Limit Value) of a MAC address list, and if not, encapsulating all the MAC addresses in the MAC List TLV; and sending an address withdraw message carrying the MAC List TLV to other PE equipment which belong to a same VPLS business case together with the PE equipment. According to the MAC address withdrawing method and the PE equipment, the problem of forwarding route errors caused by that a receiver PE misbelieves a sender PW (Pseudo Wire) during topological changing is better solved.

Description

technical field [0001] The invention relates to the technical field of data network communication, in particular to a method for reclaiming a MAC address in a VPLS network and PE equipment. Background technique [0002] Virtual Private LAN Service (Virtual Private LAN Service, VPLS) is a Multi-Protocol Label Switching (Multiple Protocol Label Switching, MPLS) Layer 2 Virtual Private Network (Virtual Private Network, VPN) technology, which can provide a point in the public network Layer 2 VPN services to multiple points. VPLS enables user networks scattered in different geographical locations to communicate with each other, just as they are directly connected to each other, that is, it makes the metropolitan area network and wide area network transparent to all user locations. [0003] In a VPLS network, a service provider network edge (Provider Edge, PE) device performs traffic route selection through Media Access Control (Media Access Control, MAC) address learning and agi...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L12/24H04L12/56H04L45/02H04L45/28
Inventor 汪正海兰锦生胡侃杨学成
Owner ZTE CORP
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