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Method, system and equipment for pseudo wire parameter negotiation

A pseudowire and parameter technology, applied in the field of communication, can solve problems such as error-prone, complex configuration, and high labor costs, and achieve the effects of reducing labor costs, simplifying complexity, and realizing dynamic allocation

Active Publication Date: 2010-01-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, to establish a pseudowire, in addition to creating a tunnel, it is also necessary to configure the same pseudowire attribute parameters and pseudowire interface parameters at both ends of the pseudowire. However, the above configuration is manually implemented, and the configuration is complex and error-prone, and the labor cost is high.

Method used

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  • Method, system and equipment for pseudo wire parameter negotiation
  • Method, system and equipment for pseudo wire parameter negotiation

Examples

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Embodiment 1

[0064] The embodiment of the present invention provides a method for negotiating pseudowire parameters. The method adds pseudowire parameters (including pseudowire interface parameters and pseudowire attribute parameters) to the Ethernet OAM message by extending the Ethernet OAM message. The end PE uses the Ethernet OAM message negotiation mechanism to realize the automatic negotiation of pseudowire parameters with the peer PE, thereby simplifying the complexity of pseudowire parameter configuration and reducing labor costs. like Figure 4 As shown, this embodiment includes:

[0065] 101: The local PE sends an Ethernet Loopback Message (ETH-LBM) message carrying a pseudowire attribute (PW Attribute) parameter and a pseudowire interface (PW Interface) parameter to the peer PE.

[0066] Wherein, the pseudowire attribute parameters include: pseudowire type (PW Type), pseudowire identifier (PW ID), and whether to use a control word (control word). Pseudowire attribute parameters...

Embodiment 2

[0078] This embodiment is based on Embodiment 1. For a pseudowire that does not support signaling, during use, if the local PE detects that the local connection circuit fails and causes the status of the pseudowire to change, it will send a packet to the peer PE. The Ethernet continuity check message (Ethernet Continuity Check Message, ETH-CCM) message of the pseudowire status code notifies the peer PE of the status change of the pseudowire. like Figure 8 As shown, this embodiment includes:

[0079] 201: The local PE detects a fault in the local connection circuit and causes a pseudowire state change, and then sends an Ethernet continuity detection message carrying the pseudowire state code to the peer PE.

[0080] Among them, the pseudowire status code identifies the status of the pseudowire, and the pseudowire status code can be in the form of an existing definition, for example, 0x00000000 indicates that the pseudowire is in a forwarding state, that is, an available state...

Embodiment 3

[0084] This embodiment is based on Embodiment 1. After the local PE and the peer PE successfully complete the pseudowire parameter negotiation result, they can send an Ethernet link tracking request (Ethernet Link TrackMessage, ETH-LTM) message, so that the dynamic allocation of pseudowire resources can be realized. like Figure 9 As shown, this embodiment includes:

[0085] 301: After the pseudowire is established, the local PE sends an ETH-LTM message carrying bandwidth information required by the pseudowire to the peer PE.

[0086] Among them, the bandwidth information required by the pseudowire is carried in the form of TLV, and the specific format is as follows Figure 10 shown. The difference is that at this time, the peer PE includes the MIP.

[0087] 302: When the peer PE receives the ETH-LTM message, it judges whether the requirements are met according to its own bandwidth condition, and sends the judgment result in the Ethernet Link Track Reply (ETH-LTR) message ...

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Abstract

The embodiment of the invention discloses a method, a system and equipment for pseudo wire parameter negotiation, and belongs to the technical field of communication. The method comprises the following steps of: sending a negotiation request message to opposite terminal provider equipment, wherein the negotiation request message carries a pseudo wire negotiation parameter which includes a pseudo wire attribute parameter and a pseudo wire interface parameter; and receiving a negotiation response message sent by the opposite terminal provider equipment, wherein the negotiation response message carries a negotiation result of a pseudo wire negotiation parameter, and judging whether the pseudo wire can be used according to the negotiation result. The system comprises home terminal provider equipment comprising a first transmitting module, a first receiving module and a first judging module. By extending the OAM message of the Ethernet and adding the pseudo wire negotiation parameter, the pseudo wire state information and the band width information needed by the pseudo wire to the OAM message of the Ethernet, the embodiment of the invention has the advantages of simplifying pseudo wireparameter settings, lowering labor cost and realizing the pseudo wire state announcement and the dynamic allocation of pseudo wire resources.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, system and equipment for negotiating pseudowire parameters. Background technique [0002] The end-to-end pseudowire emulation (Pseudo Wire Emulation edge to edge, PWE3) technology is used in the packet switching network (Package Switching Network, PSN) for asynchronous transfer mode (Asynchronous Transfer Mode, ATM) services, frame relay services, low-speed time division A technology for simulating the basic characteristics of traditional services such as Time Division Multiplex (TDM) circuit services, where the packet switching network can be an Internet Protocol (Internet Protocol, IP) network, and Multi-Protocol Label Switching (Multi-Protocol Label Switching) Switching, MPLS) network, Ethernet, etc. [0003] like figure 1 The shown PWE3 is a network reference model. In order to enable the customer equipment (Customer Edge, CE) to communicate on the PSN, the provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/28H04L29/08H04L47/76
Inventor 朱明明
Owner HUAWEI TECH CO LTD
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