Multiplex communications – Wide area network – Packet switching
Patent
1991-04-08
1993-01-12
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 92, 370 97, H04L 1246
Patent
active
051795540
ABSTRACT:
Automatic tracking of the topology of an extended local area network by augmenting a station address list kept by a bridge with a list of repeater numbers and repeater port numbers. The bridge periodically iterates through its list of stations to select a station address. The selected address table is forwarded to all of the repeaters connected to the bridge. The repeaters watch for the selected address appearing as a source address in a message on one of their ports. If the address is seen, they report the repeater port number back to the bridge. Because the repeaters are interconnected such that a predetermined port number is always used as the common port between repeaters, any possible ambiguities are eliminated.
REFERENCES:
patent: 4737953 (1988-04-01), Koch et al.
patent: 4825435 (1989-04-01), Amundsen et al.
patent: 4922503 (1990-05-01), Leone
patent: 5008884 (1991-04-01), Yazawa et al.
patent: 5018137 (1991-05-01), Backes et al.
patent: 5060228 (1991-10-01), Tsutsui et al.
International Publication WO 90/16026 to Craven, published Dec. 27, 1990.
Engelse Willem
Lomicka Jeffrey
Digital Equipment Corporation
Jung Min
Olms Douglas W.
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