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A method and device for collecting lsp path affinity attributes

A kind of affinity and attribute technology, applied in the direction of location-based services, digital transmission systems, data exchange networks, etc.

Active Publication Date: 2020-05-22
ZTE CORP
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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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  • A method and device for collecting lsp path affinity attributes
  • A method and device for collecting lsp path affinity attributes
  • A method and device for collecting lsp 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_ATTRI BUTES 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 ...

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Abstract

The present invention provides a method and device for collecting LSP path affinity attributes, wherein the method includes: obtaining the first affinity attribute of the upstream or downstream interface of the first node in the LSP path; setting the obtained first affinity attribute in the LSP_REQUIRED_ATTRIBUTES label Switch path requirement attributes or LSP_ATTRIBUTES labels in the BIT extension bits in the switch path attributes; the first node sends a message carrying LSP_REQUIRED_ATTRIBUTES or LSP_ATTRIBU TES to the previous or next second node in the LSP path, and the second node collects the first The first affinity property of the node's upstream or downstream interface. By adopting the method for collecting LSP path affinity attributes provided by the present invention, the tunnel head and tail nodes can automatically obtain the affinity attributes of the LSP path, for H-LSP (hierarchical LSP) and S-LSP (LSP splicing) , the information can be used as a TE link information for route flooding.

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 (Multiprotocol Label Switching) 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 (Label Switched Path) can meet the needs of users. [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 incl...

Claims

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Application Information

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