Consultation method of control word ability and pseudowire establishing equipment

A control word and capability technology, applied in mixed transportation, mixed switch system, data exchange through path configuration, etc., can solve the problem of inconsistent control word capability configuration and negotiation results, and achieve the effect of optimizing the negotiation process

Inactive Publication Date: 2010-12-22
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] The technical problem to be solved by the present invention is to provide a method for negotiating control word capabilities and a pseudowire establishment device to solve the problem of inconsistency between control word capability configuration and negotiation results when negotiating control word capabilities during pseudowire establishment

Method used

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  • Consultation method of control word ability and pseudowire establishing equipment
  • Consultation method of control word ability and pseudowire establishing equipment
  • Consultation method of control word ability and pseudowire establishing equipment

Examples

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application example 1

[0080] Scenario 1: The devices on both sides of the pseudo-wire are configured with the same control word capability. The device on both sides supports the control word as an example. For example, Image 6 Shown:

[0081] Step 601: PE2 configures a local support control word for the PW, and notifies PE1 of a Mapping message according to the locally configured capability;

[0082] Step 602: PE1 configures the local support control word for the corresponding PW, and notifies PE2 of the Mapping message according to the locally configured capabilities;

[0083] Step 603: PE1 performs an "AND" operation on the value of the CBit in the received Mapping message and the value of the CBit of the local control word capability, and the local negotiation of the PW is successful, and the control word capability negotiation is supported;

[0084] Step 604: PE2 receives the Mapping message notified by the peer, and performs an AND operation on the value of the CBit in the received Mappin...

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Abstract

The invention discloses a consultation method of control word ability and pseudowire establishing equipment. The consultation method comprises the steps of: configuring attributes of control word ability on local equipment and opposite terminal equipment, informing the attributes of the configured control word ability to an opposite side; and comparing by the opposite side according to the obtained attributes of the control word ability. CBit information in an Mapping message fully reflects the configuration of the control word ability of the local equipment to PW (Pocket Writing); during the consultation, and operation is carried out on an identification bit of the local control word ability and an identification bit of the remote end control word ability to obtain a result which is used as a final consultation result of the control word ability of the PW for guiding the forwarding. The invention solves the problem of inconsistency of control word ability configuration and the consultation result existing in rules defined in the present RFC4447 (Request for Comments), and optimizes the process of consulting the control word ability.

Description

technical field [0001] The invention relates to the field of two-layer virtual private network, in particular to a method for negotiating control word capabilities and a device for establishing pseudowires. Background technique [0002] L2VPN (Layer 2 Virtual Private Network, L2VPN) service is that the operator uses a part of its public shared network to expand the customer's private network, thereby providing Layer 2 connectivity of user networks in different regions. [0003] Pseudowire (PseudoWire, PW) is the basis of L2VPN service deployment. Layer 2 services, such as Ethernet services, Frame Relay services, and Asynchronous Transfer Mode services, etc., can be encapsulated in the corresponding Layer 2 Transparent transmission is performed on the pseudowire established between edge devices. By deploying this service, the operator ensures the connectivity of the same customer separated in different regions and the isolation between different users. [0004] A typical n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L29/06
CPCH04L69/24H04L45/68H04L47/10H04L12/6418H04L67/14
Inventor 朱春金利忠王玉保刘闯
Owner ZTE CORP
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