초록 ▼

A method controls multicast cell access to a switching network with a reservation ring in an ATM (Asynchronous Transfer Mode) switch. The switching network distributes the multicast cell in one or more passes from an input channel to one or more output channels of the switch during a switch cycle. A

A method controls multicast cell access to a switching network with a reservation ring in an ATM (Asynchronous Transfer Mode) switch. The switching network distributes the multicast cell in one or more passes from an input channel to one or more output channels of the switch during a switch cycle. An arbitration session for a multicast cell begins by submitting an arbitration request identifying a set of destination output channels to the reservation ring. During an arbitration cycle, the output channels in the set of destination output channels are arbitrated for over the reservation ring. The arbitration request is reissued during later arbitration cycles until access to each of the destination output channels in the set of output channels is granted.

대표청구항 ▼

[ We claim: CLAIMS:] [1.] In a switch having a switching network and a reservation ring; the switching network routing in a single pass multicast packets from selected ones of I input channels to selected ones of J output channels during a switch cycle; the reservation ring resolving conflicts betwe

[ We claim: CLAIMS:] [1.] In a switch having a switching network and a reservation ring; the switching network routing in a single pass multicast packets from selected ones of I input channels to selected ones of J output channels during a switch cycle; the reservation ring resolving conflicts between input channels contending for identical output channels during the switch cycle; a method for arbitrating multicast packet access to destination output channels of the switching network with the reservation ring, comprising the steps of:initiating an arbitration session for a multicast cell by submitting an arbitration request identifying a set of destination output channels;arbitrating, during an arbitration cycle, for access to each of the destination output channels in the set of destination output channels;eliminating from the set of destination output channels those destination output channels that were granted a reservation after completing the arbitration cycle; andrepeating said arbitrating step and said eliminating step over consecutive arbitration cycles; said repeating step terminating the arbitration session when each destination output channel in the set of destination output channels is granted a reservation.