Router with a cache having a high hit probability

Details Router with a cache having a high hit probability Router with a cache having a high hit probability

H - Electricity

04

L

H04L 12/56 (2006.01)

Patent

CA 2298191

A router allowing the entry hit probability of the cache to be increased is disclosed. The cache is searched using a different mask for each cache entry. A maximum or optimum cache prefix length is determined as a length of upper bits of the destination address of the received packet which are not masked by a corresponding mask. Alternatively, the cache is searched using longest prefix match (LPM). A cache entry allowing a plurality of destination addresses to be hit can be registered in the cache, resulting in increased cache hit probability.

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