Multiplex communications – Wide area network – Packet switching
Patent
1991-06-05
1992-12-15
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 943, H04L 1246, H04L 1266
Patent
active
051723727
ABSTRACT:
When the first message from a station is received by a LAN interface in a LAN connector unit, a source station address and a bridge port address are registered in an address translation table, and a flag T2 is set. This message is transmitted to the respective interfaces in the LAN connector unit by broadcast. Upon receiving this message, a flag T4 is set in the interface, and flags T1 are set in the other interfaces. When a WAN interface in another LAN connector unit receives the first message, a flag T2 is set. This message is transmitted from the WAN interface to the respective interfaces in the LAN connector unit by broadcast. The WAN interface is determined as an input/output interface associated with this message, and a flag T4 is set. A flag T1 is set in other interfaces. When the WAN interface receives a delayed message, since the flag T1 is already set therein, this interface is determined not to be an input/output interface for this message. A flag T3 is set in this interface.
REFERENCES:
patent: Re33426 (1990-11-01), Sugimoto et al.
patent: 4972409 (1990-11-01), Backes
patent: 5027350 (1991-06-01), Marshall
patent: 5060228 (1991-10-01), Tsutsui et al.
Jung Min
Kabushiki Kaisha Toshiba
Olms Douglas W.
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