An address lookup table in a multiport switch is implemented as a plurality of address sub-tables. Entries in the address sub-tables are stored at row addresses based on a hash of the information in the entry. Entries in the address sub-tables are stored in one of the address sub-tables, as determined...http://www.google.com.tw/patents/US6990102?utm_source=gb-gplus-share專利 US6990102 - Parallel lookup tables for locating information in a packet switched network