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Method and device for distributing virtual gateway router

A technology of virtual gateway and distribution method, applied in the field of communication

Active Publication Date: 2014-06-18
NEW H3C TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the VRRPE protocol selects a gateway for the host, it only refers to the device priority, and assigns the virtual gateway with the highest priority in the VRRPE backup group to the host. Therefore, for a host, the gateway may still be in another layer 2 network. Layer 3 traffic will still be invalidly made a round trip on the tunnel

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  • Method and device for distributing virtual gateway router
  • Method and device for distributing virtual gateway router
  • Method and device for distributing virtual gateway router

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Embodiment Construction

[0028] The embodiment of this application proposes a virtual gateway router allocation method. By marking different sites in a large Layer 2 network, recording the identification of the site where the host is located, so that the VRRPE backup group master device preferentially selects the gateway for the host The device in the VRRPE backup group with the same identifier as the site where the host is located can effectively prevent the invalid forwarding of Layer 3 traffic between sites in a large Layer 2 network. This is a forwarding method for multi-topology networks.

[0029] The embodiments of the present application will be described in further detail below with reference to the drawings.

[0030] An embodiment of the present application provides a method for allocating virtual gateway routers in a large layer 2 network. The large layer 2 network includes at least two layer 2 network sites, and the sites are connected through layer 2 tunnels established between edge devices. At...

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Abstract

The invention provides a method for distributing a virtual gateway router. The method comprises the following steps of enabling an edge device to learn an MAC (media access control) address of a host according to messages of the host, and record the corresponding relationship between the MAC address of the host and a label of a site of the host; when VRRPE (extended virtual router redundancy protocol) backup group main equipment receives an ARP (address resolution protocol) gateway request from the host, inquiring the label of the site of the host from the edge device of the site; after the edge device receives the inquiring message from the VRRPE backup group main equipment, answering the label of the site corresponding to the MAC address to the VRRPE backup group main equipment according to the MAC address of the host in the inquiring message; enabling the VRRPE backup group main equipment to use a virtual MAC address of a virtual gateway to answer to the ARP gateway request of the host, wherein the virtual gateway has the same site with the host in a VRRPE backup group. The method can solve the problem of invalid forwarding of three layers of flow rates in a large two-layer network between the sites.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a virtual gateway router allocation method and 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 located in different geographic locations, and similar services are deployed at these sites. In order to achieve dynamic allocation and management of resources between sites, virtual machines must be able to move freely between data centers. Since the virtual machine migration process is transparent to users and cannot change the IP address, it is necessary to realize Layer 2 network interconnection between sites distributed in different places. At present, the technologies for realizing Layer 2 network interconnection mainly include VPLS, Q-in-Q, MAC-in-MAC, EVI, TRILL, PBB, etc. Through these technologies, Layer 2 networks in different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L29/06H04L12/24H04L12/803
Inventor 周泽泉
Owner NEW H3C TECH CO LTD
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