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IP multicasting provides services such as the delivery of information to multiple destinations with a single transmission and the solicitation of servers by clients. These services benefit applications such as video conferencing, dissemination of datagram information, and dissemination of mail or news to a large number of recipients.
The Passport 8600 Switch also provides IP Multicast capability when used as a switch. Functioning as a switch, it supports IGMPv1 and IGMPv2 to prune group membership per port within a VLAN. This feature is called IGMP snooping.
If a Passport 8600 Switch receives multiple reports for the same multicast group, it does not transmit each report to the multicast upstream router. Instead, a switch consolidates the reports into a single report. This feature is called IGMP proxy.
A Passport 8600 module supports these protocols for IP multicasting:
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