| 摘要 |
<p>A scalable multicast protocol buffers the multicast messages at a subset of 'C' members, where C is selected to reduce to an acceptable level the probability that a given message will be lost before it reaches at least one of the C members. When one of the C bufferers thereafter receives a gossip message that indicates that the multicast message has been lost to the gossiping member, the bufferer retransmits the message to the gossiping member. When a member that is not one of the C bufferers receives such a gossip message, the member determines which members are bufferers of the lost message and requests that one of the bufferers retransmit the message to the gossiping member. The multicast protocol may further include a mechanism to detect catastrophic failures. When such a failure is detected, the member sends a request for multicast retransmission of the associated missing message to the sender.</p> |
