An embodiment consistent with the present invention includes a method and apparatus for forming a multicast repair tree. The method may be performed by a data processor and comprises the steps of determining, for each of a plurality of potential heads in a multicast group, a ranking value associated...http://www.google.com/patents/US6185698?utm_source=gb-gplus-sharePatent US6185698 - Method and apparatus using ranking to select repair nodes in formation of a dynamic tree for multicast repair
