Cache management method for switch

Abstract

The invention provides a cache management method for a switch. The cache management method comprises the following steps: allocating a secure cache for each port and a shared cache shared by all ports; preferably using the secure cache corresponding to each port on the port; if the secure cache of the port is used up, using the shared cache. By adopting the method, a public cache pool is partitioned into the secure caches and the shared cache, the shared cache is used by ports of which the secure caches are used up in case of port congestion while corresponding secure caches are used on other ports, namely, normal forwarding of other ports is not influenced in case of port congestion, thereby solving the problem of large-area packet loss occurring when all caches are used up.

Description

technical field [0001] The invention relates to the technical field of switches, in particular to a cache management method of a switch. Background technique [0002] As Ethernet switches are more and more widely used and the network transmission rate increases, the cache of the switch may be quickly exhausted by malicious attack traffic, which will cause subsequent packets entering the switch to be unable to be stored and forwarded normally, and the solution is simple In this way, indiscriminately discarding subsequent packets that enter the cache will undoubtedly cause some important packets to be discarded and affect the normal use of users, so the cache management of the switch is becoming more and more important. [0003] Similar solution: In order to avoid congestion when the public buffer pool is exhausted, when the data packets in the output port cache reach a certain threshold, packet loss starts to reduce the input data packets. However, this packet loss scheme ha...

AI Technical Summary

Problems solved by technology

However, this packet loss scheme has the risk of important data loss

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