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Forwarding path determination method and device

A method for determining a forwarding path, applied in the communication field, can solve the problems of long transition time, affecting user service experience, physical link delay cannot fully express the end-to-end path delay and jitter, etc., to reduce dependence and improve The effect of network quality awareness

Active Publication Date: 2021-10-22
PURPLE MOUNTAIN LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When the network quality of a specific path changes, the forwarder reports the updated TE information of the link to the PCE through BGP-LS, and the PCE recalculates the path according to the constraints, and then sends the path information to the forwarder through PCEP, which requires multiple network elements Processing and protocol interaction, the transition time is long, affecting the user's business experience
[0007] The TE information collected by BGP-LS includes parameters such as physical link delay and jitter. The accumulation of physical link delay cannot fully express the delay and jitter of the end-to-end path.

Method used

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  • Forwarding path determination method and device
  • Forwarding path determination method and device
  • Forwarding path determination method and device

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] This embodiment provides a method for determining a forwarding path, which specifically includes the following steps:

[0058] S10: SR Policy sets network service quality parameters;

[0059] Based on the network quality requirements of the business, set the parameters of network delay, jitter and packet loss; this parameter is an optional value as an attached attribute of SRPolicy. It should be understood that the network delay represents the end-to-e...

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Abstract

The invention discloses a method and device for determining a forwarding path, and belongs to the technical field of communication, and the method comprises the steps: setting a network service quality parameter through SR Policy; generating at least one candidate path by the SR Policy; performing network quality detection on all candidate paths; and comparing the result of the network quality detection with a set network service quality parameter so as to determine an optimal path. According to the determination method, under the condition that an SR Policy architecture system is not changed, service quality parameters are increased by expanding the SR Policy, so that the capability of customizing service requirements by a repeater in a segmented routing scene is improved, the bottleneck existing in the realization of a current segmented routing PCE mode is solved, the capability of detecting and sensing network quality by the repeater is enhanced, and the dependence on the PCE is reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining a forwarding path. Background technique [0002] Segment routing can be implemented through the architecture of SR Policy. SR Policy is identified by the following triples: headend: the device generated / implemented by SR Policy; color: used to distinguish multiple SRPolicies between the same headend and endpoint pair ; Endpoint: The endpoint of the SR Policy, which is an IPv4 / IPv6 address. [0003] SR Policy also includes candidate paths, which are bound with a Segment list, indicating the specific forwarding path of the data packet in the network. Each candidate path has a priority value, and the higher the priority value, the more preferred it is. SRPolicy allows multiple candidate paths to be included. When multiple candidate paths are included, the effective candidate path with the second highest priority value is the backup...

Claims

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Application Information

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IPC IPC(8): H04L12/725H04L12/721H04L12/26
CPCH04L45/302H04L45/306H04L45/123H04L43/08
Inventor 唐寅江逸茗张进马海龙卢珊萍夏慧莉
Owner PURPLE MOUNTAIN LAB