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A method and device for allocating virtual gateway routers

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

Active Publication Date: 2017-10-17
NEW H3C TECH CO LTD
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  • Description
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  • Application Information

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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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  • A method and device for allocating virtual gateway routers
  • A method and device for allocating virtual gateway routers
  • A method and device for allocating virtual gateway routers

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Embodiment Construction

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

[0029] Various embodiments of the present application will be described in further detail below with reference to the accompanying 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 est...

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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 technical field of communications, in particular to a method and device for allocating virtual gateway routers. Background technique [0002] In order to achieve high reliability and redundant deployment, most enterprise networks and their data centers today span multiple physical sites located in different geographical locations, where similar services are deployed. In order to realize dynamic allocation and management of resources between sites, virtual machines must be able to migrate freely between data centers. Since the migration process of the virtual machine is transparent to the user and the IP address cannot be changed, it is necessary to implement 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...

Claims

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Application Information

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