Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus interface architecture
Reexamination Certificate
2007-01-30
2007-01-30
Perveen, Rehana (Department: 2112)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus interface architecture
C710S306000, C710S316000, C710S317000, C709S239000
Reexamination Certificate
active
10097209
ABSTRACT:
A transmission unit that improves communication quality by making effective use of a line to a blocked port in compliance with a spanning tree protocol. Bridges have bridge ports and communicate at the layer2level. Physical ports are used for sending and receiving frames via lines. A bridge port state monitoring section monitors the state of ports. A port correspondence table managing section stores and manages a port correspondence table including the state of the bridge ports and the correspondence between the bridge ports and the physical ports in the unit and the correspondence between bridge ports and physical ports in an opposite unit. A switching section switches bridge ports and physical ports on the basis of the port correspondence table so that a line disconnected logically can be used for providing other communication services. A port state management control section sends and receives port state information.
REFERENCES:
patent: 2002/0154606 (2002-10-01), Duncan et al.
patent: 2002/0181412 (2002-12-01), Shibasaki
patent: 2003/0037162 (2003-02-01), Kotser
patent: 2003/0210685 (2003-11-01), Foster et al.
patent: 2004/0062209 (2004-04-01), Goldman et al.
patent: 11-008646 (1999-01-01), None
Japanese Office Actiond dated Jan. 17, 2006 with partial translation.
Fujitsu Limited
Huynh Kim T.
Perveen Rehana
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