Forwarding queue flushing method and system of switch chip

Abstract

The invention provides a forwarding queue flushing method and system of a switch chip, and relates to the technical field of message forwarding control, and the method comprises the steps: S1, the switch chip receives a to-be-forwarded message and caches the to-be-forwarded message; step S2, the switch chip sorts the cached messages to be forwarded to form a plurality of message queues; s3, the switching chip detects whether the congested message queue exists or not, and if not, the step S1 is returned; and if yes, the switching chip performs partial message flushing on the message queue with congestion, and performs corresponding cache release. The method has the advantages that when the queue is congested, the number of messages in the queue is reduced through the message flushing strategy, the problem of queue congestion is effectively solved, and different flushing strategies can be configured according to different application scenes to meet different application scenes.

Description

technical field [0001] The invention relates to the technical field of message forwarding control, in particular to a forwarding queue flushing method and system of a switching chip. Background technique [0002] As a network interconnection device, the switching device needs to support the quality of service function in order to quickly respond to real-time and important data while completing data forwarding. The packets received by the switching device can be forwarded to different packet buffer queues, and the CPU forwards them with high or low priority through the Quality of Service (QoS) queue speed limit and scheduling algorithm, thereby reducing the CPU load and effectively utilizing the bandwidth , which avoids protocol message packet loss, protocol flapping and other events caused by the congestion of the message buffer queue corresponding to the protocol message. [0003] Packet buffer queue congestion means that the number of packets arriving in a certain packet ...

AI Technical Summary

Problems solved by technology

Once the message cache queue is congested and cannot be released for a long time, it will always occupy the switch cache, that is, the switch cache resources cannot be released

And when multiple message buffer queues are congested, the buffer resources of the switch are wasted. Since the buffer resources of the switch are limited, it is very easy to cause network packet loss due to insufficient buffer resources.

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