| 摘要 |
Tracking changes made in a directory server by establishing plural multicast groups for a respective plurality of change categories. Change information is submitted for multicast responsive to a change in the directory server, the change information being submitted to a selected one of the plural multicast groups, for multicast by the selected group, in correspondence to the category of the change. The change information may be submitted to the multicast group utilizing a connectionless protocol. Clients register with at least one of the plural multicast groups in order to obtain the change information.
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