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Message forwarding method and service provider network edge device

A message forwarding and network technology, applied in the field of data communication, can solve problems such as wasting backbone network bandwidth resources

Active Publication Date: 2016-12-21
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In view of this, the embodiment of the present invention provides a message forwarding method and a service provider network edge device to at least solve the problem in the prior art when a PE receives a unicast message with an unknown destination MAC from an AC of the VSI. , the packet will be flooded to all PWs on the backbone network side, resulting in a waste of backbone network bandwidth resources

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  • Message forwarding method and service provider network edge device

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Embodiment Construction

[0036] In the prior art, when a PE receives a unicast packet with an unknown destination MAC address (a unicast packet with no matching MAC address found in the MAC address forwarding table of the VSI) from an AC of the VSI, the PE will The text is flooded to all ACs connected to the local CE and PWs connected to the remote VSI in the VSI (that is, flooded to all PWs on the backbone network side), which wastes the bandwidth resources of the backbone network.

[0037] In addition, the MAC address learning based on the data plane in the prior art emphasizes that the PW must be bidirectional. When receiving a packet from the incoming direction, the PE associates the source MAC address of the packet with the outgoing direction, thereby realizing MAC address study. Therefore, it is necessary to assign a unique label to each PW as an incoming label. Since a VSI usually contains a large number of PWs, for example, dozens of PWs, assigning a unique label to each PW will not only occup...

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Abstract

The invention discloses a message forwarding method and a service provider network edge device, wherein the method is applied to a VPLS network, and the VPLS network includes a plurality of PEs, and each PE is connected to a CE through an access circuit AC. The method includes: the first PE receives a unicast message from the first AC; the first PE searches the MAC address forwarding table corresponding to the first virtual switching instance VSI associated with the first AC, and searches the The destination MAC address carried matches the forwarding entry; if no matching forwarding entry is found, the first PE only forwards the unicast message to other ACs connected to the local CE in the first VSI flood. The present invention does not flood the unicast message received from the AC with an unknown destination MAC address to the backbone network side, but only floods it at the local site, thereby saving the bandwidth resources of the backbone network.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a message forwarding method and a service provider network edge device. 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) is developed on the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/723H04L12/741H04L45/50H04L45/74
CPCH04L12/462H04L12/4633H04L12/4641H04L45/745H04L45/50H04L45/66
Inventor 叶金荣
Owner NEW H3C TECH CO LTD