Method and device for LSP intermediate node label distribution in MPLS ordered mode

An intermediate node and label technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems affecting label forwarding efficiency, increasing the number of forwarding entries, and increasing label consumption, so as to reduce label usage, The effect of reducing tag usage and improving forwarding efficiency

Active Publication Date: 2007-02-28
NEW H3C TECH CO LTD
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Problems solved by technology

[0008] It can be seen that when the address prefix in the received message is used as FEC for processing, the label consumption on the intermediate node device increases, and it also brings an increase in the number of forwarding entries, which not only occupies a limited The system resources will also affect the label forwarding efficiency

Method used

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  • Method and device for LSP intermediate node label distribution in MPLS ordered mode
  • Method and device for LSP intermediate node label distribution in MPLS ordered mode
  • Method and device for LSP intermediate node label distribution in MPLS ordered mode

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Embodiment Construction

[0052] In the MPLS system composed of LSR as the basic network unit, it includes: entry node equipment, intermediate node equipment and exit node equipment.

[0053] As shown in FIG. 2 , the intermediate node device 100 in the embodiment of the present invention includes: a forwarding equivalence class determining unit 10 and a label assigning unit 20 . Wherein, the label allocation unit 20 further includes: a label allocation counting subunit 21 .

[0054] The forwarding equivalence class determination unit 10 is connected to a label allocation unit 20 .

[0055] Wherein, the forwarding equivalence class determining unit 10 is configured to determine the forwarding equivalence class according to the label information carried in the received label mapping message and the received unique identification information of the label generating node device; wherein, the The received unique identification information of the label generation node device may be the label space of the la...

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Abstract

The invention relates to a label distributing method of LSP middle node at serial type in MPLS system, and a relative device. Wherein, when the middle node device receives the label projection message, the middle node device based on the label information carried in said message, to generate the unique label information of node device and fix the transfer equivalent kind; the middle node device via fixed transfer equivalent kind distributes label. The invention can reduce the label consumption, save memory and improve the transfer efficiency.

Description

technical field [0001] The present invention relates to MPLS (Multi Protocol Label Switch, multi-protocol label switching) technology, in particular, relates to an LSP (Label Switched Path, label switching path) intermediate node label distribution method and device in an orderly manner in the MPLS system. Background technique [0002] MPLS (Multi Protocol Label Switch, multi-protocol label switching) is a classification and forwarding technology, which uses short and fixed-length labels to encapsulate packets. MPLS groups packets with the same forwarding processing method (for example, the same destination address, the same forwarding path, the same service level, etc.) into one class, and this class is called Forwarding Equivalent Class (FEC) . Packets belonging to the same forwarding equivalence class will receive exactly the same treatment in the MPLS network. In the MPLS system, a unique identifier (label) is used to uniquely represent the forwarding equivalence class...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L45/50
Inventor 魏巍
Owner NEW H3C TECH CO LTD
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