Enterasys SECURESTACK C3 Configuration Manual page 413

Defaults
None.
Mode
Interface configuration: C3 (su)‐>router(Config‐if(Vlan 1))#
Usage
This value determines how many times IGMP messages will be sent. A higher number will mean
that end stations will be more likely to see the packet. After the robustness value is reached, IGMP
will assume there is no response to queries.
Example
This example shows how to set the IGMP robustness value to 5 on VLAN 1:
C3(su)->router(Config)#interface vlan 1
C3(su)->router(Config-if(Vlan 1))#ip igmp robustness 5
ip igmp robustness
SecureStack C3 Configuration Guide 13-17