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Building method and device of label switching path

A label-switched path and establishment method technology, applied in the field of label-switched path establishment, can solve problems such as bandwidth waste, redundant multicast data traffic, etc., and achieve the effect of avoiding bandwidth waste

Active Publication Date: 2018-04-06
MAIPU COMM TECH CO LTD
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Problems solved by technology

[0005] Although the above solution can protect the public network tunnel, since two mLDP P2MP LSPs with PE1 and PE2 as the root nodes are created in the above solution, the data traffic is not only in the The forwarding on the main path is also forwarded on the backup path, so there will be redundant multicast data traffic, resulting in a waste of bandwidth

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  • Building method and device of label switching path
  • Building method and device of label switching path
  • Building method and device of label switching path

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Embodiment Construction

[0066] The method and device for establishing a label switched path provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0067] In the embodiments of the present invention, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present invention shall not be construed as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

[0068] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situation...

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Abstract

The invention provides a building method and a building device of a label switching path, relates to the field of communication, and can avoid bandwidth waste while a public network tunnel is protected. The method comprises the steps as follows: a first node selects a main upstream node and a backup upstream node according to a stored routing list; a first label mapping message including FEC and amain label distributed by the first node is sent to the main upstream mode, and a second label mapping message including FEC, a backup label distributed by the first node and the IP address of the first node is sent to the backup upstream node; and the first node generates and stores a first forwarding list. The method and the device provided by the invention are used for building the label switching path.

Description

technical field [0001] The present application relates to the communication field, in particular to a method and device for establishing a label switching path. Background technique [0002] Multicast VPN (English: virtual private network, Chinese: virtual private network) can be used in the existing BGP (English: border gateway protocol, Chinese: Border Gateway Protocol) / MPLS (English: multi-protocollabel switching, Chinese: multi-protocol label switching ) IP (English: internet protocol, Chinese: Internet Protocol) multicast service is opened on the VPN, and the private network multicast data flow (that is, the data message) is transmitted to the remote site of the VPN through the public network. [0003] Multicast VPN can use MPLS technology to establish public network tunnels, including the establishment of mLDP (English: the multipoint extensions for label distribution protocol, Chinese: multipoint extensions for label distribution protocol) P2MP (English: point-to-mu...

Claims

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Application Information

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IPC IPC(8): H04L12/707H04L12/723H04L12/741H04L45/24H04L45/50H04L45/74
CPCH04L45/22H04L45/50H04L45/74
Inventor 李诚
Owner MAIPU COMM TECH CO LTD
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