Consultation method of control word ability and pseudowire establishing equipment

A control word and capability technology, which is applied in hybrid switch systems, data exchange through path configuration, electrical components, etc., can solve the problem of inconsistency between control word capability configuration and negotiation results, and achieve the effect of optimizing the negotiation process

Inactive Publication Date: 2014-07-02
ZTE CORP
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  • Abstract
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  • 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 method for negotiating a control word capability and a device for establishing a pseudowire, comprising: configuring the attribute of the control word capability on a local device and an opposite device, and notifying the other party of the configured attribute of the control word capability; A comparison process is performed according to the obtained attribute of the control word capability. In the present invention, the CBit information in the Mapping message fully reflects the configuration of the local device's control word capability for the PW. During the negotiation process, the "AND" operation is performed on the identification bit of the local control word capability and the identification bit of the remote control word capability. , the result is used as the final negotiation result of the control word capability of the PW to guide the forwarding. On the one hand, the present invention solves the problem that the control word capability configuration in the current rules defined in RFC4447 is inconsistent with the negotiation result. On the other hand, it optimizes the control word The process of capacity negotiation.

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 Patents(China)
IPC IPC(8): H04L12/46H04L29/06
CPCH04L47/10H04L69/24H04L45/68H04L67/14H04L12/6418
Inventor 朱春金利忠王玉保刘闯
Owner ZTE CORP
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