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

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: 2022-04-29
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, device and storage medium for determining identification information of a cross-domain path
  • Method, device and storage medium for determining identification information of a cross-domain path
  • Method, device and storage medium for determining identification information of a cross-domain path

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0044] figure 1 is a flowchart of a first method for determining identification information of a 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, wherein the path calculation request is used to request to obtain a 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 path segments, the path calculation request carries the compression identifier used to identify the compressed path segment and the path establishment type PST;

[0046] Step S104, after obtaining the identification information of the path from the source node to the destination node, according to the compression identification and the PST, instruct the sub-PCE corresponding to each path segment to compress the ide...

Embodiment 2

[0056] figure 2 is a flowchart of a method for determining identification information of a second cross-domain path according to an embodiment of the present invention, as shown in 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 a 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, the path calculation request carries a compression identifier for identifying the compressed path segment and a path establishment type PST;

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

[0059] Step S206, compressing the identification information of the path segment a...

Embodiment 3

[0070] The foregoing embodiments are described from the side of the parent PCE and the child PCE respectively, and the present invention will be described below in conjunction with the overall operation:

[0071] In this embodiment, in the SR-TE tunnel initiated by the PCC side or the SR-TE tunnel actively created by the PCE, the ability to compress possible path segments can be explicitly configured, and the capability flag (corresponding to the above The compression identifier of ) will be included in the path calculation request initiated by the PCC to the PCE (and the child PCE to the parent PCE). According to the capability flag, the parent PCE will trigger the sub-PCEs of each domain to create an additional RSVP-TE tunnel (or SR-TE tunnel) according to the corresponding path segment, and each sub-PCE actively creates an additional RSVP-TE tunnel (or SR-TE tunnel). TE tunnel) assigns the Binding SID or obtains the Binding SID from the head node PCC of the RSVP-TE tunnel (...

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Abstract

The present invention provides a method, device and storage medium for determining identification information of a cross-domain path, wherein the method includes: receiving a path calculation request from a first sub-path calculation unit PCE, the path calculation request carrying information for Identify the compression identifier for compressing the path segment and the path establishment type PST; after obtaining the identification information of the path from the source node to the destination node, indicate the sub-PCE pairs corresponding to each path segment according to the above compression identifier and PST Compress the identification information of the path segment; receive the identification information of the compressed path segment returned by the sub-PCE corresponding to each path segment, and form the identification information of each compressed path segment into the identification information of the compressed path according to the identification information of the path . Through the present invention, the length of the path identification information is effectively reduced, thereby solving the problem of too long path identification information in the related art.

Description

technical field [0001] The present invention relates to the communication field, 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, referred to as PCE) architecture to calculate traffic engineering (Traffic Engineering, referred to as TE) paths across domains (domains), 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 sub-PCE to calculate cross-domain TE paths, the parent PCE first obtains which domain sequences the TE path may pass through based on the domain-level topology, and then requests each sub-PCE to calculate the corresponding domain sequence for each domain sequence. After receiving the calculation results of each child PCE, the parent PCE splices ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/00H04L45/50H04L47/80
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