Patent ID: 8054766

Claim:
A method for translating SM (Standard Multicast) addresses to configurable SSM (Source Specific Multicast) addresses when an IGMPv2 receiver joins a multicasting group comprising the steps of: (a) sending a query from a multicast router to an IGMPv2 receiver; (b) generating a membership report with a SM address from the IGMPv2 receiver; (c) transmitting the membership report with the SM address to the multicast router; (d) translating the membership report with the SM address, (*, G 1 ), into an SSM address, (S 0 , G 0 ), as specified in a multicast address translation table through a management interface of the multicast router wherein the SM address is translated to the SSM address such that a group address (G 1 ) for a first group in the SM address is translated to a group address (G 0 ) for a second group different than the group address (G 1 ) for the first group and a source address (S 0 ) in the SSM address; and (e) storing a translation of the (S 0 , G 0 ) address in a multicast forwarding information base in the multicast router.