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IGMP Cache
==========
Group Address Intf Reporter Up Time Expire V1
Timer
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Parameter Description
Group Address An IP multicast group address with subscribers directly attached or
downstream from this switch.
Intf The IP interface on this switch that has received traffic directed to the
IP multicast group address (see chapter 2 “Displaying Subnet
Information”).
Reporter IP address of the source of the last membership report received for
this multicast group on this interface. If no membership report has
been received, this object has the value 0.0.0.0.
Up Time The time elapsed since this entry was created.
Expire The time remaining before this entry will be aged out. (The default is
260 seconds.)
V1 Timer The time remaining until the switch assumes that there are no longer
any IGMP Version 1 members on the IP subnet attached to this
interface. (The default is 400 seconds.)
If the switch receives an IGMP Version 1 Membership Report, it sets a
timer to note that there are Version 1 hosts present which are
members of the group for which it heard the report.
If there are Version 1 hosts present for a particular group, the switch
will ignore any Leave Group messages that it receives for that group.
Note: To scroll through the table, use the <Next Page> and <Prev Page> buttons. To
display a specific page, set the page number in the Page field and then select
<Apply>.
Displaying the Multicast Forwarding Cache
The switch maintains a cache of multicast routing entries used to calculate the delivery
tree in multicast routing protocols. The Multicast Forwarding Cache includes the
subnetwork that contains the multicast source and the nearest upstream neighbor for