| 摘要 |
A method (200) of operation in a communication system (100) including a plurality of hosts (105, 115, 125) a controller (133) operable to allocate resources for communications to be sent between hosts in the system, and a network of routers (102, 112, 122) operable to route communications between the hosts by multicast transmission, the method including the controller sending (213) to target routers associated with target hosts which are to receive a communication from a sending host a prompt message prompting the target routers to form a multicast tree via which the communication is to be deliverable.
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