Multiplex communications – Wide area network – Packet switching
Patent
1991-05-01
1994-06-14
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 8513, 370 60, 370 943, H04J 324, H04J 302, H04Q 1104
Patent
active
053216954
ABSTRACT:
A multiple port network device, connected to a network, detects and records over which port of the multiple port network device other network devices communicate with the multiple port network device. A table is maintained in a memory. The table has entries which identify by which port of the multiple port network device other network devices communicate with the multiple port network device. The table is updated by monitoring packets received by the multiple port network device. When a packet is received by the multiple port network device, a port number over which port the multiple port network device received the packet is determined. Also, a source address of a network device from which the packet originated is determined. When the source address is not listed in the table, the table is updated with an entry for the source address which includes the port number.
REFERENCES:
patent: 4597078 (1986-06-01), Kempf
patent: 4627052 (1986-12-01), Hoare et al.
patent: 4905232 (1990-02-01), Newman
patent: 4930123 (1990-05-01), Shimizu
patent: 4939724 (1990-07-01), Ebersole
patent: 4996524 (1991-02-01), Tojima
Hewlett--Packard Company
Nguyen Chau T.
Olms Douglas W.
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