Method of transmitting and receiving message and a provider edge router

A message receiving and message technology, which is applied to data exchange through path configuration, digital transmission systems, electrical components, etc. It can solve the inconvenience of networking applications, the inability of Layer 2 protocol type networks to access each other, and restrict the development and deployment of VPLS, etc. problems, to achieve the effect of expanding the application field

Inactive Publication Date: 2009-10-07
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In the current VPLS network structure stipulated in the agreement, the link interface type between CE and PE can only be Ethernet. However, there are Point-to-Point Protocol (PPP, Point to Point Protocol) and Frame Relay (FR , Frame Relay) and other Layer 2 protocols, the ...

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  • Method of transmitting and receiving message and a provider edge router
  • Method of transmitting and receiving message and a provider edge router
  • Method of transmitting and receiving message and a provider edge router

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Embodiment Construction

[0033] The invention proposes a message receiving method, a message sending method and PE to realize message transmission in networks with different interface types. In order to achieve this purpose, the present invention changes the PE connected to the CE through a non-Ethernet interface, specifically as follows: PE processes and sends ARP requests instead of the CE directly connected to it through a non-Ethernet interface; in order to meet the requirements of different types of interfaces For packet forwarding between PEs, the PE converts the format of the packet before sending the packet.

[0034] The scheme proposed by the present invention is applied to a new type of VPLS system, which includes an MPLS system composed of more than one PE and CE, where the interface between PE and CE is called the external network interface, and the interface between PE and PE The interface is called the internal network interface. The external network interface can be an Ethernet interfa...

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Abstract

The invention provides a method of transmitting and receiving message and a provider edge router (PE), wherein the method of transmitting and receiving message is applied to virtual private LAN service (VPLS) network, and in the VPLS network, at least one interface type of the interfaces between a second PE and a CE direct connected with the PE is non-Ethernet interface, and at least one interface type of the interfaces between a first PE and a CE direct connected with the PE is Ethernet interface. The method includes: a second PE exchanges private network tags with a first PE; the second PE receives an address resolution protocol (ARP) request from the resource CE that encapsulates the private network tags, and return a medium access control (MAC) address of the second PE to the resource CE; the second PE receives a Ethernet message encapsulated with the private network tags from the resource CE by the first PE, and re-encapsulates the Ethernet message according to the type of the non-Ethernet interface then transmits the message to destination CE. The invention can support various kinds of link interface between the PE and the CE and expand application flied of the VPLS network.

Description

technical field [0001] The present invention relates to the technical field of Virtual Private LAN Service (VPLS, Virtual Private LAN Service), in particular to a message sending and receiving method and a provider edge router (PE, ProviderEdge Router). Background technique [0002] VPLS is a technology that provides similar local area network (LAN, Local Area Network) connections for geographically isolated sites on a Multi-protocol Label Switching (MPLS, Multi-protocol Label Switching) network. Through VPLS, users can simultaneously access the network and visit each other from multiple geographically dispersed sites, and the connection effect of each site is the same as in a LAN. [0003] figure 1 It is a schematic diagram of a typical VPLS network structure in the prior art. The provider edge router (PE, Provider Edge Router) is connected with the user edge router (CE, Custom Edge Router), and is mainly responsible for service access. Mapping and forwarding from the pri...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L45/50H04L45/74
Inventor 王军周迪
Owner NEW H3C TECH CO LTD
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