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Method and device for collecting LSP (Label Switched Path) affinity attributes

A kind of affinity and attribute technology, applied in the direction of service based on location information, digital transmission system, data exchange network, etc.

Active Publication Date: 2016-06-15
ZTE CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention provides a method and device for collecting LSP path affinity attributes, which can enable the tunnel head and tail nodes to automatically obtain the affinity attributes of the entire LSP path, and solve the problem that there is no method and protocol in the prior art to collect a The problem of the affinity attribute of the entire LSP path

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  • Method and device for collecting LSP (Label Switched Path) affinity attributes
  • Method and device for collecting LSP (Label Switched Path) affinity attributes
  • Method and device for collecting LSP (Label Switched Path) affinity attributes

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Embodiment Construction

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] Such as image 3 As shown, the embodiment of the present invention provides a method for collecting LSP path affinity attributes, including:

[0064] Step S100, acquiring the first affinity attribute of the upstream or downstream interface of the first node in the LSP path;

[0065] Step S200, setting the obtained first affinity attribute in the LSP_REQUIRED_ATTRIBUTES label switching path requirement attribute or the BIT extension bit in the LSP_ATTRIBUTES label switching path attribute;

[0066] Step S300, the first node sends a message carrying LSP_REQUIRED_ATTRIBUTES or LSP_ATTRIBUTES to the previous or next second node in the LSP path, and the second node collects the first affinity attribute of the upstream or downstream interface of t...

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Abstract

The invention provides a method and a device for collecting LSP (Label Switched Path) affinity attributes. The method comprises the following steps: acquiring a first affinity attribute of an upstream or downstream interface of a first node in an LSP; setting the acquired first affinity attribute in a BIT extension bit in LSP_REQUIRED_ATTRIBUTES or LSP_ATTRIBUTES; and sending a message carrying the LSP_REQUIRED_ATTRIBUTES or the LSP_ATTRIBUTES to a previous or next second node in the LSP through the first node, and collecting the first affinity attribute of the upstream or downstream interface of the first node by the second node. Through adoption of the method for collecting the LSP affinity attributes provided by the invention, the affinity attributes of the LSP can be acquired automatically by tunnel head and tail nodes, and the information can be taken as TE (Traffic Engineering) link information for performing route flooding specific to an H-LSP (Hierarchical LSP) and an S-LSP (Stitched-LSP).

Description

technical field [0001] The invention relates to the field of data network communication, in particular to a method and device for collecting LSP path affinity attributes. Background technique [0002] In the MPLS (MultiprotocolLabelSwitching) network, using the RSVP-TE protocol to establish a tunnel can constrain which attribute links need to be excluded when the tunnel is established, and which attribute links must be included, so that the established LSP (LabelSwitchedPath) can satisfy user needs. [0003] In the standard protocol RFC3209, three fields in a SESSION_ATTRIBUTE object are defined to constrain the establishment of the tunnel path, such as figure 1 As shown, the information carried in the Exclude-any field indicates that all paths need to be excluded, the information carried in the Include-any field indicates that only any one of them needs to be included in the path, and the information carried in the Include-all field indicates that all must be included in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/723H04L45/50H04W4/02
CPCH04W4/02H04L41/0893
Inventor 付志涛
Owner ZTE CORP
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