A packet switch comprises a switch having a plurality of input lines and a plurality of output lines for sending a packet supplied from each of the input lines to one of the output lines selected in accordance with routing information attached to each packet, a plurality of pairs of input/output lines connected to terminals or other switches, a plurality of line interface provided one for each of the input/output lines and each connected to one of the input lines and one of the output lines of the switch, and a controller connected to one of the input lines and one of the output lines of the switch. Control information is communicated between the controller and the line interfaces or the switch via a control packet through the switch. The switch may be a plurality of multi-stage connected unit switches and input lines and output lines thereof are divided into a plurality of groups. The controller is connected to an input line of one of first stage unit switches and an output line of one of final stage unit switches of one of the switch groups.
* 5715396 Method for providing for automatic topology discovery in an ATM network or the like
* 5664107 Method for providing for automatic topology discovery in an ATM network or the like
* 5729685 Apparatus for determining the topology of an ATM network or the like Via communication of topology information between a central manager and switches in the network over a virtual service path
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