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Method and device for determining identification information of cross-domain path, and storage medium

A technology of identification information and path information, which is applied in the field of communication, can solve the problem of too long path identification information, achieve the effect of reducing the length and solving the problem of too long path identification information

Active Publication Date: 2019-01-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For the problem of too long path identification information in related technologies, no effective solution has been proposed so far

Method used

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  • Method and device for determining identification information of cross-domain path, and storage medium
  • Method and device for determining identification information of cross-domain path, and storage medium
  • Method and device for determining identification information of cross-domain path, and storage medium

Examples

Experimental program
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Embodiment 1

[0044] figure 1 is a flowchart of a method for determining identification information of a first cross-domain path according to an embodiment of the present invention, as shown in figure 1 As shown, the process includes the following steps:

[0045] Step S102, receiving a path calculation request from the first sub-path calculation unit PCE, where the path calculation request is used to request to obtain a path from a source node to a destination node, the source node and the destination node are located in different domains, and the path includes One or more path segments, where the path calculation request carries a compression identifier used to identify the path segment to be compressed and a path establishment type PST;

[0046] Step S104, after obtaining the identification information of the path from the above-mentioned source node to the destination node, according to the above-mentioned compression identification and the PST instructs the sub-PCE corresponding to eac...

Embodiment 2

[0056] figure 2 is a flowchart of a method for determining the identification information of a second cross-domain path according to an embodiment of the present invention, such as figure 2 As shown, the process includes the following steps:

[0057] Step S202, sending a path calculation request to the parent path calculation unit PCE, wherein the path calculation request is used to request to obtain the path from the source node to the destination node, the source node and the destination node are located in different domains, and the path includes one or more a path segment, and the path calculation request carries a compression identifier for identifying the path segment to be compressed and a path establishment type PST;

[0058] Step S204, receiving the creation message from the parent PCE, wherein the creation message is sent by the parent PCE according to the above-mentioned compression identification and PST;

[0059] Step S206, compressing the identification infor...

Embodiment 3

[0070] The above-mentioned embodiments are described from the parent PCE and the child PCE side respectively, and the present invention is described below in conjunction with the overall operation:

[0071] In this embodiment, the capability of compressing possible path segments can be explicitly configured in the SR-TE tunnel initiated by the PCC side or the SR-TE tunnel created by the PCE actively. The capability flag (corresponding to the above-mentioned Compression ID) will be included in the path computation request initiated by the PCC to the PCE (and the child PCE to the parent PCE). According to this capability flag, the parent PCE will trigger the child PCEs of each domain to create additional RSVP-TE tunnels (or SR-TE tunnels) according to the corresponding path segments, and each child PCE will actively create additional RSVP-TE tunnels (or SR-TE tunnels). TE tunnel) to assign the Binding SID or obtain the Binding SID from the PCC of the head node of the RSVP-TE tun...

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Abstract

The present invention provides a method and device for determining the identification information of a cross-domain path, and a storage medium. The method includes: receiving a path computation request from a first sub-path computation element (PCE), wherein the path computation request carries a compression identifier that identifies the compression of path segments and a path setup type (PST); after the identification information of a path from a source node to a destination node is received, instructing sub PCEs corresponding to respective path segments to compress the identification information of respective path segments according to the compression identifier and the PST; receiving the compressed identification information of the path segments returned by the sub-PCEs corresponding to respective path segments, and forming the compressed identification information of respective path segments into the compressed identification information of the path according to the identificationinformation of the path. The method effectively reduces the length of the identification information of the path, thereby solving the excessively long path identification information in the prior art.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a method, device and storage medium for determining identification information of a cross-domain path. Background technique [0002] RFC5623 discusses the use of a hierarchical path computation element (Path Computation Element, PCE for short) architecture to calculate traffic engineering (Traffic Engineering, abbreviated as TE) paths across domains (domains), and the parent PCE can obtain all domains from each child PCE. The connection relationship between them maintains the domain-level topology. When the parent PCE is requested by a child PCE to calculate the cross-domain TE path, the parent PCE first obtains which domain sequences the TE path may pass through according to the domain-level topology, and then requests each child PCE to calculate the corresponding domain sequence for each domain sequence. After receiving the calculation results of each child PCE, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/715H04L12/723H04L12/911H04L12/913H04L45/24H04L45/42H04L45/50H04L47/724
CPCH04L45/04H04L45/50H04L47/821H04L47/825H04L12/4633H04L45/42H04L45/02H04L45/24H04L47/72H04L45/26H04L45/507H04L41/12
Inventor 彭少富金飞蔡祝沈财
Owner ZTE CORP
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