# IGMP Interfaces

To access the IGMP Interfaces dialog box:

1. Select Device > Monitor > IGMP Interfaces.

2. With an entry selected, click Monitor.

From here, you can monitor the interfaces on which IGMP is enabled.

The following information is displayed:

- Wrong Version Querier (igmpInterfaceWrongVersionQueries)

- Interface Joins (igmpInterfaceJoins)

- Interface Leaves (igmpInterfaceLeaves)

- Interface Groups (igmpInterfaceGroups)

- Robustness (igmpInterfaceRobustness)

The following list specifies buttons in this dialog box, as well as their function:

- To specify the refresh rate for this dialog box, select a value from the drop-down box.

- Click Start/Stop to begin/end device monitoring.

> Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.

- Click Cancel to close the dialog box.

- Click Print to print the contents of the dialog box.

- Click Help to access online help.

Wrong Version Querier (igmpInterfaceWrongVersionQueries)

Number of queries received whose IGMP version does not match igmpInterfaceVersion. IGMP requires that all routers on a LAN are configured to run the same version of IGMP. Thus, if any queries are received with the wrong version, this indicates a configuration error.

Interface Joins (igmpInterfaceJoins)

Number of times an entry for this interface has been added to the cache table. This object provides an indication of the amount of IGMP activity over time.

Interface Leaves (igmpInterfaceLeaves)

Number of times an entry for this interface has been deleted from the cache table. This object is deprecated since its value cannot be used to compare with igmpInterfaceJoins to get the number of groups joined. Instead, igmpInterfaceGroups indicates the number of groups joined, which can then be compared with igmpInterfaceJoins to derive the number of leaves.

Interface Groups (igmpInterfaceGroups)

Current number of entries for this interface in the cache table.

Robustness (igmpInterfaceRobustness)

The robustness variable can be adjusted to deal with expected packet loss on a subnet. If a subnet is expected to be lossy, the robustness variable should be increased.