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Device and method for end-to-end pseudowire emulation access

A pseudowire simulation and purpose technology, applied in the direction of data exchange through path configuration, digital transmission system, data exchange network, etc., can solve the problem of consuming PE label space and so on

Active Publication Date: 2010-05-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, the local PE or peer PE needs to assign different PW labels to different users. If the local PE or peer PE corresponds to multiple users, the PW labels of multiple users will consume a large amount of PE label space.

Method used

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  • Device and method for end-to-end pseudowire emulation access
  • Device and method for end-to-end pseudowire emulation access

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Embodiment Construction

[0029] The device to be described in the present invention is figure 1 In the operator's edge equipment PE shown in , the main functional module in the existing PE is a service forwarding line card, and the service forwarding line card generally includes: an interface board, a data processing module and a switching chip, wherein the data processing module can be Network processor etc.; The present invention utilizes two-layer virtual private network (L2VPN) technology to bear the weight of PWE3 service, promptly configures L2VPN service between the PEs of PSN network two ends, described L2VPN can be virtual private local area network (VPLS), inner layer PWE3 service It is carried on the outer L2VPN service.

[0030] Here, the L2VPN technology has been maturely applied in the process of implementing end-to-end pseudowire emulation access to Ethernet, and the present invention implements a method for end-to-end pseudowire emulation access to non-Ethernet based on L2VPN technolog...

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Abstract

The invention discloses a device for end-to-end pseudowire emulation access, and also discloses a method for the end-to-end pseudowire emulation access. The method comprises the steps of: after a local PE receives non-Ethernet data sent by a local user, performing encapsulation of an inner-layer PWE3 frame format; performing the encapsulation of an outer-layer L2VPN frame format on the encapsulated data, and then sending the encapsulated data to an opposite-end PE; and after the local PE receives the data sent by the opposite-end PE, executing decapsulation of the outer-layer L2VPN frame format and the inner-layer PWE3 frame format sequentially, and then sending the non-Ethernet data acquired by decapsulation twice to the local user. The device and the method can realize the end-to-end pseudowire emulation access on non-Ethernet under the condition of saving PE label space, and prevent PW labels from being exchanged for multiple times.

Description

technical field [0001] The present invention relates to end-to-end pseudo wire emulation (Pseudo Wire Emulation Edge-to-Edge, PWE3) technology in the field of communication, in particular to a device and method for end-to-end pseudo wire emulation access. Background technique [0002] PWE3 technology is a mechanism for simulating various point-to-point services on a packet switching network (PSN). The simulated services can be time division multiplexing (TDM) private line network, asynchronous transfer mode (ATM) network, frame relay ( FR) network or Ethernet and other networks. The PWE3 technology uses a tunnel mechanism on the PSN to simulate the necessary attributes of services, and the tunnel is called a pseudowire (Pseudo Wire, PW). Operators can use PWE3 technology to transfer all transport services to a converged network. Here, the converged network can be an IP network or a multi-protocol label switching (MPLS) network. From the user's point of view, it can be regar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/56H04L1/00
CPCH04L12/4658H04L12/413H04L12/4654H04L12/4633H04L12/4641H04L12/4666H04L12/46
Inventor 谢密
Owner ZTE CORP
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