Automatic detection of a similar device at the other end of a wi

Details Automatic detection of a similar device at the other end of a wi Automatic detection of a similar device at the other end of a wi

1997-01-06

1999-07-06

Shin, Christopher B.

3952006, G06F 1300

Patent

active

059206985

ABSTRACT:
Automatic detection by a port of the type of device connected by a cable to the port is accomplished by transmitting a control packet by the device, where the control packet has a nonstandard format. The port examines received packets for the nonstandard format. Upon detection of a packet having the nonstandard format, the port recognizes that the source device of the packet is of a predetermined type which transmits control packets of the nonstandard format. Further, by choosing the nonstandard format so that typical forwarding devices will not forward the nonstandard packet, the port is assured that the source device is attached to the port by a cable. That is, by choosing a nonstandard packet which is not forwarded by a bridge or router, the port is assured that the packet has not been forwarded from a remote part of the network.

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