Service medium access control address convergence method for special virtual network based on secondary layer

A medium access control and virtual private network technology, applied in the field of virtual private network, can solve the problem of slow convergence speed, and achieve the effect of fast convergence speed and fast service recovery time

Inactive Publication Date: 2007-10-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] (1) Slow convergence speed

Method used

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  • Service medium access control address convergence method for special virtual network based on secondary layer
  • Service medium access control address convergence method for special virtual network based on secondary layer
  • Service medium access control address convergence method for special virtual network based on secondary layer

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Experimental program
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Embodiment Construction

[0038] As shown in Figure 1, the device PE (that is, the service provider boundary) is connected through physical media such as optical fibers, which are physical channels between devices, and the virtual tunnel Tunnel is constructed in the physical channel through the Label Distribution Protocol (LDP) for transmission. aisle. The virtual circuit (VC for short) configured based on the Layer 2 virtual private network (Layer 2 VPN module, L2VPN for short) is included in the tunnel Tunnel, which can also be regarded as small tunnels through which packets pass. Small tunnels for transmission. In fact, for the message forwarding of various devices, simply speaking, it is to receive the message from the A port, analyze and process it, and then forward it out through the B port. In order to achieve this purpose, According to the internal information of the message, it is necessary to search in some local table entries, which is the corresponding relationship between the information o...

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Abstract

The present invention discloses one medium access control address converging method based on two-layer virtual special network business. When the tunnel varies from un-conveyable state to conveyable state and has tunnel ports inconsistent to the last time, the index value of the tunnel ports in the last time is added into the local collection chain table. When the virtual circuit varies from un-conveyable state to conveyable state and has had the UP / DOWN variation, the tunnel ports are judged for whether to be maintained unchanged; if not, the 15-sec timer is started for waiting for 15 sec before down transmitting corresponding MAC address deleting message to delete the MAC address based on the collected port information chain table and via the two-layer interface management module.

Description

technical field [0001] The invention relates to a virtual private network technology, in particular to a two-layer-based virtual private network service medium access control address convergence method. Background technique [0002] Operators have a long history of providing private line services to users. With the current technical conditions, they have realized the means of providing services across larger regions and using more general networks. For the user's requirement of establishing a virtual network between multiple points, there is a virtual private local area network service (VPLS) between multiple points based on a multi-protocol label switching (MPLS) network. [0003] For the Layer 2 private virtual private network (L2VPN) service implemented by VPLS, when the tunnel side changes, in order to ensure the rapid recovery of the service, the old Layer 2 forwarding entry needs to be deleted. In the draft standard of L2VPN, the issue of updating Layer 2 forwarding h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/08H04L12/46H04L45/50
Inventor 孙辉
Owner HUAWEI TECH CO LTD
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