Multicast packet relay device adapted for virtual router
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United States of America Patent
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Jul 6, 2010
Grant Date -
Jan 5, 2006
app pub date -
Jan 7, 2005
filing date -
Jun 30, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An object of the present invention is to solve a problem that when multicast is utilized in a network configured with virtual routers, traffic in the relay network is increased. According to the present invention, the number of multicast packets via the relay network is reduced by performing a multicast packet transfer across the virtual routers within the same router. Specifically, it is allowed to register in a multicast routing table held by each virtual router, a line interface identifier of another virtual router as outgoing line interface information, whereby multicast packet transfer from a virtual router to another virtual router is made possible. In order to specify a virtual router to share the multicast packet, each virtual router holds information to specify a virtual router having a line interface to receive the multicast traffic indicated by the multicast group address.
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