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Note:
The IGMP Cache option is not supported in Passport 1600 Series Layer 3 switch, Version 1.0. This feature will be supported with the availability of multicast routing with DVMRP.
The IGMP cache shows group entries and related information for IP multicast groups that have hosts requesting data for those groups by sending IGMP reports. The IGMP cache contains information on multicast groups, such as the interfaces where they are required to be received, the last host that sent a report for those groups, and the expected expiry time for those groups.
To view information about IGMP caches:
| The IGMP dialog box opens with the Snoop Globals tab displayed. |
| The IGMP Cache tab opens. |
Address
The IP Multicast group address for which this entry contains information.
IfIndex
The interface from which the corresponding multicast group address is heard.
LastReporter
The IP address of the source of the last membership report received for this IP Multicast group address on this interface. If no membership report has been received, the object has the value 0.0.0.0.
ExpiryTime
The amount of time, in seconds, remaining before this entry will be aged out.
UpTime
The time elapsed since this entry was created.
Version1HostTimer
The time remaining until the local router will assume that there are no longer any IGMP version 1 members on the IP subnet attached to the interface. Upon hearing any IGMPv1 membership report, this value is reset to the group membership timer. When the time remaining is nonzero, the local router ignores any IGMPv2 Leave messages for this group that it receives on this interface.
Status
The status of this entry.
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