A method, apparatus, or computer executable instructions for converting Protocol Independent Mode (PIM) requests. In one embodiment, the method includes receiving a first multicast routing protocol (MRP) message, wherein the first MRP message is a request to join a multicast group of receivers. The first...http://www.google.com/patents/US7418003?utm_source=gb-gplus-sharePatent US7418003 - PIM sparse mode to source specific multicast conversion