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MSTP device and method realizing pseudo wire emulation edge-to-edge business

A pseudo-wire simulation and edge technology, applied in the field of communication, can solve the problems of non-standard extension support and PWE3 unusable, etc., and achieve the effect of easy implementation and simple method

Inactive Publication Date: 2007-03-28
GLOBAL INNOVATION AGGREGATORS LLC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Since the data single board of the existing MSTP equipment can only process standard MPLS (Multiprotocol Label Switch, multi-protocol label switching) labels and does not support non-standardized extensions, PWE3 cannot be used in Synchronos Digital Hierarchy (SDH) Applied on equipment-based MSTP equipment, especially on MSTP equipment with time division multiplexing (Time Division Multiplex, referred to as TDM) crossover

Method used

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  • MSTP device and method realizing pseudo wire emulation edge-to-edge business
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  • MSTP device and method realizing pseudo wire emulation edge-to-edge business

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Embodiment approach

[0061] As another implementation manner, in the downlink direction, after the second data processing board 11 on the network side completes the exchange of the pseudowire label PW label to itself, it puts an outer label—the internal tunnel label TUNNELlabel, and sends it to the auxiliary circuit AC The first data processing board 10 on the side. The first data processing board 10 first pops off the inner tunnel label TUNNEL label on the outer layer, and then pops off the pseudowire label PW label on the inner layer, as shown in FIG. 7 . The distribution method of the internal tunnel label TUNNEL label in the downlink direction is the same as the distribution method of the internal tunnel label TUNNEL label' in the uplink direction described above, that is, the internal tunnel label TUNNEL label' of the pseudowire label PW label is performed in the same way as in the uplink direction For details, please refer to the foregoing content.

[0062] The present invention can real...

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Abstract

The invention provides a method for implementing edge-to-edge pseudolinear simulation service in an MSTP device, comprising the steps of: first data processing board receives user data through auxiliary circuit and adds tags to the user data to form a message to be transmitted in virtual channel between the first and second data processing boards, where the tags comprise service tag and internal tunnel tag; the first data processing board transmits the message through the virtual channel corresponding to the internal tunnel tag to the second data processing board; the second data processing board exchanges external tunnel tag for the internal tunnel tag and transmits the message via data interface to network. And it provides an MSTP device for implementing edge-to- edge pseudolinear simulation service. And it can automatically allocate internal tag and implement automatic allocation of internal and external tags.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a Multiple Service Transmit Platform (MSTP) device capable of realizing edge-to-edge pseudowire emulation services and implementing edge-to-edge pseudowire emulation (Pseudowire) on the MSTP device. Wire Emulation Edge to Edge, referred to as PWE3) business method. Background technique [0002] Pseudo Wire Emulation Edge to Edge (PWE3 for short) is developed by a working group under the Internet Engineering Task Force (IETF for short), and is used in Packet Switch Network (PSN for short) ) technology that provides traditional layer 1 and layer 2 network services. [0003] The service model definition of PWE3 on the PSN is shown in Figure 1. Two provider edge nodes (Provide Edge, PE for short) PE1 and PE2 at the edge of the network provide a Or a plurality of pseudowires (Pseudo Wire, PW for short), such as the two pseudowires PW1 and PW2 shown in the figure, en...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/08H04L45/50
Inventor 黄志明吕鑫吴箭江健
Owner GLOBAL INNOVATION AGGREGATORS LLC
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