Path calculating method, message responding method and related equipment

Abstract

Disclosed are a path calculation method, a message response method and a related device, which are used for improving the sensitivity of triggering path recalculation and reducing the message traffic between network devices. The method in the embodiments of the present invention comprises: receiving, by a second network device in the embodiments of the present invention, path requirement information and a recalculation condition which are sent by a first network device; firstly, according to the path requirement information, calculating a path which satisfies a requirement, and sending description information about the path which satisfies the requirement to the first network device; then, continuously judging, by the second network device, whether the recalculation condition is satisfied; if the recalculation condition is satisfied, conducting, by the second network device, the path recalculation; and sending description information about the recalculated path to the first network device.

Description

technical field [0001] The present invention relates to the communication field, in particular to a path calculation method, a message response method and related equipment. Background technique [0002] With the continuous expansion of network scale, traffic engineering technology appears. The main goal of traffic engineering is to maximize network resource utilization and improve network performance while ensuring network operation efficiency and reliability. Reduce the cost and expense of the entire network operation through more effective utilization of bandwidth resources; through reasonable allocation of traffic, it is possible to avoid the phenomenon of partial link congestion and partial link idleness; through reasonable planning of traffic, the utilization of network resources can be realized optimization to improve the overall performance of the network. In addition to using a distributed computing method to calculate the path, such as Multi-Protocol Label Switch...

AI Technical Summary

Problems solved by technology

[0006] However, in practical applications, the use of timing recalculation paths can only be adapted to scenarios where only bandwidth needs to be considered, such as scenarios where bandwidth is reserved based on the Resource Reservation Protocol (RSVP, ResourceReSerVationProtocol). In application scenarios where network performance parameters such as packet loss, delay, and jitter are considered, such as in an intelligent routing network system, parameters such as packet loss and delay change dynamically in the network. If the recalculation timer of the path calculation client is If the timeout time is set too long, it is possible to miss changes in packet loss and delay, so that the path cannot be adjusted in time; if the timeout time of the timer is set too short, it will increase the number of messages between the path calculation client and the path calculation unit. communication volume, increasing the communication burden of both parties

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