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

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...

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