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

A pseudowire emulation and edge technology, applied in the field of communication, can solve problems such as the difficulty in implementing MPLS, the switch chip does not support multi-protocol label switching, and the circuit cannot be determined

Inactive Publication Date: 2008-01-30
ZTE CORP
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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 f

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

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[0033] In order to make the objectives, technical solutions, and implementation effects of the present invention clearer, the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The purpose of the present invention is to provide a method and device for realizing the PWE3 function on the IP-DSLAM. In order to achieve the above purpose, an MPLS processing card is added to the IP-DSLAM equipment. This card occupies a physical slot of the IP-DSLAM and is connected to the inline port of the switch chip of the main control board through the MII interface. The MPLS processing card It has the function of protocol processing, capable of MPLS protocol processing and data packet encapsulation and conversion. The switching device of the user board adopts FPGA, which supports the related configuration of PWE3 business circuit.

[0035] The PWE3 service flow is completed by the FPGA of the ...

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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...

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Application Information

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IPC IPC(8): H04L12/56
CPCH04L45/50H04L45/00H04L45/60
Inventor 纪林
Owner ZTE CORP
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