Host route processing method in virtual subnet, related devices and communication system

A technology of virtual subnet and processing method, which is applied in the field of communication, and can solve problems affecting the efficiency of CE hosts in transmitting data packets, increasing the length of data packet forwarding paths, etc.

Active Publication Date: 2015-08-26
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has found that when there are multiple PE devices in some sites of the virtual subnet to achieve site multi-homing, it is often easy to form CE host routing loops, and the formati

Method used

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  • Host route processing method in virtual subnet, related devices and communication system
  • Host route processing method in virtual subnet, related devices and communication system
  • Host route processing method in virtual subnet, related devices and communication system

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Embodiment Construction

[0069] Embodiments of the present invention provide a host routing processing method in a virtual subnet, related equipment, and a communication system, so as to avoid the formation of CE host routing loops as much as possible in the scenario where there are multiple PE devices in some sites of the virtual subnet, and then Improve the efficiency of data packet transmission between CE hosts.

[0070] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts bel...

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Abstract

Disclosed are a processing method and related device for a host route in a virtual sub-network, and a communication system. The processing method for a host route in a virtual sub-network comprises: receiving, by a first operator edge device, a packet used for address parsing, wherein at least one second operator edge device is also included in a virtual sub-network station where the first operator edge device is located; determining, by the first operator edge device, whether a source MAC address carried in the packet is a virtual MAC address; and if it is determined that the source MAC address is a virtual MAC address, not executing at least one of the following operations: saving a table entry of a local customer edge (CE) host route corresponding to a source IP address carried in the packet, and distributing the local CE host route corresponding to the IP address in a virtual sub-network based on a routing protocol of a layer 3 VPN. The solution in the embodiments of the present invention is beneficial to avoid forming CE host route loops as far as possible, thus improving the efficiency of data packet transmission between CE hosts.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a routing processing method of a local host in a virtual subnet, related equipment and a communication system. Background technique [0002] The provider edge (PE, Provider Edge) devices in the virtual subnet (VS, Virtual Subnet) usually use the routing protocol of the three-layer virtual private network (L3VPN, Layer3Virtual Private Network) to exchange the local customer edge (CE, Customer Edge) host routing, and then achieve subnet extension (subnet extension). [0003] The PE device can record the local CE host information in the Address Resolution Protocol (ARP, Address Resolution Protocol) or Neighbor Discovery (ND, Neighbor Discovery) protocol cache table, and generate the corresponding Internet Protocol (IP, Internet Protocol) address of the local CE host. The local CE host route is distributed to the virtual subnet based on the L3VPN routing protocol, and other PE...

Claims

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Application Information

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IPC IPC(8): H04L12/741H04L29/12H04L45/74H04L45/18H04L45/586H04L45/741
CPCH04L45/18H04L45/04H04L45/745H04L45/586H04L45/66H04L45/741
Inventor 徐小虎张大成
Owner HUAWEI TECH CO LTD
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