Tut Systems, Inc.

Steven L Ethier

Thomas E Warner

Mark S Miller

Patrick L Corder

A switch for switching a packet within a communications network includes a switching core that services a number of ports. The switch also includes address matching logic, coupled to the switching core, that implements an address lookup scheme according to which the switching core may switch to packet received at the switch. Override logic, that is also coupled to the switching core, determines with a packet received at any one of the number of ports serviced by the switching core is received at a predetermined port. This may be done by snooping a bus within the switch that provides an indication of an active port. If the packet was not received at the predetermined port, the override logic override the address matching logic to cause the switching core to route the packet exclusively to the first port.

Method and apparatus for the secure switching of a packet within a communications network

A method of adjusting the sensitivity of a receiver requires the association of a network address of a remote network device, such as a computer, with a first port of a multiport network device, such as a switch. The reception of the network address of the remote network device at a second port of the multiport network device indicates the possible occurrence of a cross-talk condition between networks coupled to the first and second ports. Accordingly, the sensitivity of a receiver associated with the second port is reduced in an attempt to reduce the sensitivity thereof to a point at which cross-talk signals, generated as a result of the cross-talk condition between networks coupled to the first and second ports, are no longer detected. The sensitivity of the receiver may be reduced by increasing a noise threshold level below which signals are not detected.

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Pleasanton, CA, United States of America

Steven L Ethier