Method and apparatus for implementing edge-to-edge pseudo-line simulation

Abstract

The invention provides a method and a device of realizing edge-to-edge pseudo-wire emulation to arrange a label switching processing card of multiple protocols in uplink and downlink processes. In the uplink process, a switch chip of a main control board transmits the received internal label switching message of multiple protocols to the processing card which encapsulates the switching message into a pseudo-wire emulation edge-to-edge data message and exchanges the data message to the switch chip; in the downlink process, the switch chip transmits the received external label switching message of multiple protocols to the processing card which encapsulates the data message of the switching message into the internal label switching message of multiple protocols and exchanges the encapsulated switching message to the switch chip. The invention adds a processing card which realizes PWE3 business on IP-DSLAM and after the internal MPLS message is exchanged to the switch chip of the main control board, the MPLS message ensures that the circuit accessing information of users is not lost.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for realizing PWE3 (Pseudo Wire Emulation Edge to Edge). Background technique [0002] The edge-to-edge pseudo wire (PW, Pseudo Wire) simulation is formulated by a working group under the Internet Engineering Task Force (IETF), and is used to provide traditional first-class performance on the Packet Switch Network (PSN). Layer and Layer 2 network business technology. At present, PWE3 is mostly used in router equipment. With the continuous development of the second-layer virtual private network (VPN, Virtual Private Network) business, many operators already have access to multiplexers (IP-DSLAM, Digital Subscriber Line Access Multiplexer) equipment realizes the PWE3 service requirements, so as to achieve the purpose of transparently transmitting the user-side Ethernet / Asynchronous Transfer Mode (ATM, Asynchronous Transfer Mode) data to the remote CE e...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for realizing edge-to-edge pseudo-wire emulation, which is used to solve the problem of existing edge-to-edge pseudo-wire emulation methods on IP-DSLAM equipment due to the fact that the switching chip does not support multi-protocol It is difficult to implement MPLS caused by label switching, and the switch chip of the main control board cannot determine whether the circuit accessed by the user is a PWE3 service circuit.

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