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Media access control address convergence method and media access control address convergence device

A technology of media access control and MAC address, which is applied in the field of data communication, can solve problems such as reverse data flow loss and interruption, and achieve the effect of accelerating convergence

Inactive Publication Date: 2016-06-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the VPLS service created by the Kompella method, like the VPLS created by the Martini method, also needs to accelerate the convergence of MAC addresses. Otherwise, when the VPLS forwarding link changes, the reverse data traffic will inevitably be lost, resulting in traffic interruption.

Method used

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  • Media access control address convergence method and media access control address convergence device
  • Media access control address convergence method and media access control address convergence device
  • Media access control address convergence method and media access control address convergence device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The scenario in this embodiment is that the dual-homing master NPE fails in the H-VPLS network, such as Figure 4 As shown, in the H-VPLS network, UPE is dual-homed to NPE1 and NPE2 in the Full-Mesh domain through SpokePW. MartiniVPLS is deployed between UPE1 and NPE1 and NPE2, and is deployed between NPE1, NPE2, NPE3 and NPE4. In a stable state, the forwarding path of traffic from CE1 to CE3 is CE1->UPE->NPE1->NPE3->CE3; the forwarding path of traffic from CE3 to CE1 is CE3->NPE3->NPE1->UPE ->CE1.

[0057] When NPE1 fails, UPE detects that NPE1 fails through events such as PW bidirectional forwarding detection (BFD) failure (Down) or LDP session timeout, and UPE immediately switches the traffic to StandbySpokePW, and NPE1 learns that the VPLS service forwarding link occurs according to the traffic switching Change, send a MacWithdraw message of an empty media access control list (MacList) to NPE2 through the extended BGPUpdate message;

[0058] When NPE2 receives the...

Embodiment 2

[0063] The scenario in this embodiment is that the dual-homing ActiveSpokePW fails in the H-VPLS network, such as Figure 5 As shown, in the H-VPLS network, UPE is dual-homed to NPE1 and NPE2 in the Full-Mesh domain through SpokePW. MartiniVPLS is deployed between UPE1 and NPE1, NPE2, and between NPE1, NPE2, NPE3, and NPE4. In a stable state, the forwarding path of traffic from CE1 to CE3 is CE1->UPE->NPE1->NPE3->CE3; the forwarding path of traffic from CE3 to CE1 is CE3->NPE3->NPE1->UPE ->CE1.

[0064] When the ActiveSpokePW fails, both UPE and NPE1 directly know that the VPLS service forwarding link has changed through the PW detection technology or signaling. Among them, the UPE immediately switches the traffic to the StandbySpokePW, and NPE1 directly reports to the Full-MeshVPLS through the extended BGPUpdate message. All other NPE devices in the domain send a MacWithdraw message carrying MacList, which contains all invalid MAC addresses, that is, the MAC addresses previo...

Embodiment 3

[0070] The scenario in this embodiment is that the dual-homing ActiveAC fails in the Full-MeshVPLS network, such as Image 6 As shown, in the Full-Mesh network, CE is directly dual-homed to NPE1 and NPE2 in the Full-Mesh domain through the AC. Kompella VPLS is deployed between NPE1, NPE2, NPE3, and NPE4. In a stable state, CE1 to CE2 The forwarding path of traffic is CE1->NPE1->NPE3->CE2; the forwarding path of traffic from CE3 to CE1 is CE2->NPE3->NPE1->CE1.

[0071] When the ActiveAC fails, both CE1 and NPE1 directly know that the VPLS service forwarding link has changed through the link detection technology. All other NPE devices of the device send a MacWithdraw message carrying a MacList, which contains all invalid MAC addresses (that is, the MAC addresses previously learned from the ActiveAC);

[0072] After receiving the MacWithdraw message with MacList sent by NPE1, NPE2 deletes the MAC address carried in the MacList from the local VPLS forwarding table;

[0073] Afte...

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PUM

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Abstract

The invention discloses a media access control (MAC) address convergence method and an MAC address convergence device. Kompella virtual private local area network service (VPLS) business is established between network provider edges (NPE). When learning of the change in a VPLS business forwarding link, the NPEs send an MAC address withdraw (MacWithdraw) event to other NPEs in the VPLS domain through a border gateway protocol (BGP) message, so the other NPEs can delete an MAC address according to the policy of the MacWithdraw event after receiving the BGP message carrying the MacWithdraw event. The invention further discloses the MAC address convergence device.

Description

technical field [0001] The invention relates to data communication technology, in particular to a media access control (MAC) address convergence method and device in Kompella-style Virtual Private LAN Service (VPLS, Virtual Private Lan Service). Background technique [0002] A virtual private local area network service (VPLS, VirtualPrivateLanService) is a point-to-multipoint layer-2 virtual private network (VPN, VirtualPrivateNetwork) service provided in a public network. VPLS provides Ethernet services to end customers by simulating the operator's IP core network as a virtual Layer 2 switch. By deploying VPLS, the operator ensures the connectivity of the same customer separated in different regions and the isolation between different users. [0003] The operator plans and deploys the VPLS network according to the needs of customers and itself, and the deployed VPLS network is transparent to the operator's customers. The networking of a typical VPLS network is as follows:...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/741H04L45/74
CPCH04L12/46
Inventor 朱春
Owner ZTE CORP
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