Message transmission method and equipment

A message transmission and message technology, applied in the field of communication, can solve the problem of MAC address traffic loss, and achieve the effect of reducing traffic loss and saving resources

Active Publication Date: 2012-04-11
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The present invention provides a message transmission method and equipment to solve the pr

Method used

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  • Message transmission method and equipment
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  • Message transmission method and equipment

Examples

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[0042] In the current EVI No Flooding mode, unknown unicast packets are only broadcast on the local PE device, and members in the extended VLAN of the local user can receive the broadcast packets, but for members in the Extended VLAN on the remote PE device The message cannot be received.

[0043] In order to solve the above problem, in the embodiment of the present invention, in the EVI No Flooding mode, a PE device is selected as an Extranet PE device (referred to as an Internet PE device) among PE devices that have established a GRE tunnel. One PE device is selected as the extranet PE device among the PE devices of the GRE tunnel. Usually, the PE device with a large-capacity MAC address table is selected as the extranet PE device. Preferably, the Extranet PE device maintains all MAC address information in the entire EVI instance; other PE devices (for the convenience of description, PE devices other than the Extranet PE device are referred to as ordinary PE devices in this ...

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Abstract

The invention discloses a message transmission method and message transmission equipment which are applied to Ethernet virtual interconnection (EVI) networking. Generic routing encapsulation (GRE) tunnels are established among peripheral equipment (PE) in an EVI embodiment; a broadcast mode of the EVI embodiment is No Flooding; the PE having a large-capacity media access control (MAC) address table in the EVI embodiment is configured to be Extranet PE; and expanded GRE tunnels are established between the Extranet PE and common PE at the opposite ends of the GRE tunnels. The method comprises the following steps that: after the common PE receives a message from a local user side, if a corresponding output interface cannot be searched, the common PE encapsulates the message to be a GRE message and sends the GRE message to the Extranet PE through the expanded GRE tunnels; the Extranet PE receives the GRE message and decapsulates the GRE message, searches an output interface corresponding to a target MAC address of the message from the EVI embodiment to which the message belongs; if the output interface cannot be searched, the message is broadcasted at an interface of the local user side and is encapsulated to be the GRE message, and then the GRE message is sent back to the PE at the opposite ends through the expanded GRE tunnels to be forwarded. By the invention, the problem of flow loss caused by miss of the MAC address under the condition that the EVI embodiment is configured to be a No Flooding mode.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a message transmission method and equipment, which are applied to EVI networking. Background technique [0002] EVI (Ethernet Virtual Interconnection, Ethernet connection virtualization) is an Ethernet interconnection technology that can deploy multiple data centers in different places to achieve load sharing and high reliability, and freely migrate between data centers through virtual machines . [0003] The overall EVI network consists of a core network (public network) and a site network (private network). The site network is a Layer 2 network with independent business functions connected to the core network through one or more edge devices, including the edge network (aggregation The network between the device and the edge device) and the access network (the network between the access device and the aggregation device), mainly composed of hosts and switching devices; ...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L45/16
CPCH04L12/4633H04L12/4675H04L45/02
Inventor 宋小恒
Owner NEW H3C TECH CO LTD
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