Enterasys ssr-glx19-02 User Guide

Obtain IGMP Cache information if you want to learn about the multicast groups of IGMP 
interfaces, identify whether the SSR is a member of those groups, and examine other 
IGMP configuration information about those groups. To access such information:

1.

If you are not in the Front Panel view, switch to it by clicking the CoreWatch main 
window. 

2.

Select the Monitor menu, choose Routing State, choose IGMP State, and then choose 
IGMP Cache Table

.

An IGMP Cache table similar to the following appears:

Joins

Indicates how many times a group membership has been 
added on the interface. By examining this field, you can 
determine the amount of IGMP activity over time.

Groups

Indicates how many groups are on the interface.

Robustness

Indicates the expected packet loss on a subnet. Robustness is a 
measurement of a lossy network condition. The SSR assumes a 
robustness of 2.