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ULTICAST
F
ILTERING
3-205
Displaying Multicast Group Information
When IGMP (Layer 3) is enabled on this switch the current multicast
groups learned via IGMP can be displayed in the IP/IGMP/Group
Information page. When IGMP (Layer 3) is disabled and IGMP (Layer 2)
is enabled, you can view the active multicast groups in the IGMP
Snooping/IP Multicast Registration Table (see page 3-198).
Command Attributes
• Group Address – IP multicast group address with subscribers directly
attached or downstream from this switch.
• Interface – The interface on this switch that has received traffic
directed to the multicast group address.
• Last Reporter – The IP address of the source of the last membership
report received for this multicast group address 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.
(Default: 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. (Default: 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.
Web – Click IP, IGMP, IGMP Group Membership.