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Parameter negotiation method and system

A technology of parameters and negotiation messages, applied in the field of communication, which can solve the problem that P2MPPW parameter negotiation cannot be realized.

Inactive Publication Date: 2014-10-22
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a parameter negotiation method and system, which solves the problem that P2MP PW parameter negotiation cannot be realized

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Embodiment Construction

[0065] Since the P2MP PW is a unidirectional point-to-multipoint pseudowire, the negotiation method of the pseudowire VCCV parameter on the P2P PW is not applicable. Similarly, for other parameters, such as control words, MTU, and the maximum number of concatenated ATM cells, similar parameter negotiation issues also exist.

[0066] In order to solve the above problems, an embodiment of the present invention provides a method for realizing parameter negotiation between the P2MP PW root node and the leaf nodes. The leaf node solves the parameter negotiation problem between the P2MP PW root node and the leaf node by carrying interface parameters (TLV) in the notification message. Here, the type of the interface parameter may be a VCCV parameter, or MTU and the maximum number of concatenated ATM cells.

[0067] First, Embodiment 1 of the present invention will be described with reference to the accompanying drawings.

[0068] In the embodiment of the present invention, the pseu...

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Abstract

The invention provides a method and system for parameter negotiation, relating to the field of communications and solving the problem that point-to-multipoint pseudo-wire (P2MP PW) negotiation can not be achieved. The method comprises the following steps that one end node of a pseudo wire sends a parameter negotiation message to an opposite end node of the pseudo wire, wherein the parameters of the pseudo wire are carried in the parameter negotiation message; and the opposite end node completes the pseudo-wire parameter negotiation according to the parameter negotiation message. The technical scheme provided by the invention is applicable to network two-layer service loads.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for realizing parameter negotiation between a root node and a leaf node of a point-to-multipoint pseudowire (P2MP PW, Point-to-Multipoint Pseudo-wire). Background technique [0002] PWE3 is an end-to-end Layer 2 service bearer technology, which belongs to the point-to-point L2VPN (Layer 2 Virtual Private Networks, Layer 2 virtual private network). In the two PE (Provider Edge, provider edge) devices of PSN (PacketSwitched Network, packet switching network), it uses LDP / RSVP (Label Distribution Protocol / Resource Reservation Protocol, Label Distribution Protocol / Resource Reservation Protocol) as signaling , through the tunnel (may be MPLS (Multiple Protocol Label Switching, multi-protocol label switching tunnel), GRE, L2TPv3 or other) to simulate various two-layer services at the CE (Customer Edge, user edge), such as ATM (Asynchronous Transfer Mode, asynchronous Tran...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L29/06
Inventor 吴波陈然
Owner ZTE CORP