초록 ▼

Determination of a Time To Live ("TTL") hop count for repair data units transmitted from a repair head to a standard destination device in a communications network is facilitated for multicast transmission. The repair head destination device monitors the path between the repair head destination devi

Determination of a Time To Live ("TTL") hop count for repair data units transmitted from a repair head to a standard destination device in a communications network is facilitated for multicast transmission. The repair head destination device monitors the path between the repair head destination device and the standard destination devices by exchanging messages with the respective standard destination devices. The repair head transmits control messages to each destination device including a dispatched

대표청구항 ▼

[ What is claimed is:] [1.] A method for facilitating the transmission of a repair data unit in a network including at least one source device, at least one destination device and at least one repair head destination device, comprising the steps of:transmitting a first message employing a first hop

[ What is claimed is:] [1.] A method for facilitating the transmission of a repair data unit in a network including at least one source device, at least one destination device and at least one repair head destination device, comprising the steps of:transmitting a first message employing a first hop count limiter from the repair head destination device to the destination device;providing a message failure indication to the repair head destination device if the first message is not received by the destination device within a predetermined period of time;increasing the first hop count limiter if the message failure indication is provided;transmitting a multicast data unit employing a second hop count limiter that is greater than the first hop count limiter from the source device toward the destination device and the repair head destination device;retaining a copy of the multicast data unit that can be accessed by the repair head destination device;transmitting a request for repair to the repair head destination device if the multicast data unit is not received by the destination device; andin response to the request for repair, transmitting a repair data unit employing the first hop count limiter from the repair head destination device toward the destination device.