3Com SuperStack II 9300 Command Reference Manual page 527

Fields in the IP Multicast Cache Display
Field Description
source Subnetwork that contains a source device that is sending traffic
addressed to the IP multicast group listed in the group field.
group IP multicast group address of packets coming from the
subnetwork listed to its left.
inVif Index number of the interface that receives incoming IP multicast
group traffic. Either an I or a T precedes the index number. An
I indicates a regular IP multicast interface. A T indicates that
the interface also operates as a DVMRP tunnel.
outVif Index numbers of the interfaces to which traffic from the inVif is
being forwarded.
inPorts Physical port that corresponds to the interface that is listed in the
inVifs field.
outPorts Physical ports that correspond to the interfaces that are listed in
the outVifs field.
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