Optimized multicast distribution within a hybrid PPPoE/IPoE broadband access network
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United States of America Patent
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Aug 18, 2009
Grant Date -
Aug 17, 2006
app pub date -
Sep 21, 2005
filing date -
Feb 15, 2005
priority date (Note) -
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Abstract
An access node (e.g., DSLAM) and method for optimizing the distribution of a multicast stream within a hybrid PPPoE/IPoE broadband assess network are described herein. In the preferred embodiment, the DSLAM snoops upstream IGMP messages encapsulated within PPPoE frames, and forwards them transparently towards a BRAS (located in an Ethernet aggregation network). In addition, the DSLAM duplicates the IGMP message and sends the duplicated IGMP message encapsulated within IPoE frames towards the standard Ethernet switches (located in the Ethernet aggregation network). The IPoE encapsulated IGMP message can be snooped by the standard Ethernet switches. This functionality of the DSLAM ensures the optimal multicast distribution by the Ethernet aggregation network.
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