Abstract: In order to acquire high speed switching in high-speed fibre channel switch network,a method applying to the token-routing fibre channel switch to reduce the token's frequency was put up. In this scheme, the token is coded with "the reducing-frequency code",that is a special sequence of '0'and '1',then it's frequency may be reduced multiply,and the switch can extract the information of token without the serial-to-parallel converter.The results show that the structure of switch is simplified while its reliability is greatly improved and its costs is significantly decreased.

Key words: Fibre channel, Token-routing, Reducing-frequency code