Administrator Guide

Layer 3 Routing Commands 1453
console(config)#interface vlan 15
console(config-if-vlan15)#ip igmp query-max-response-time 10
ip igmp robustness
Use the ip igmp robustness command in Interface VLAN Configuration
mode to configure the robustness that allows tuning of the interface, that is,
tuning for the expected packet loss on a subnet. If a subnet is expected to
have significant loss, the robustness variable may be increased for the
interface.
Syntax
ip igmp robustness robustness
no ip igmp robustness
• robustness — Robustness variable. (Range: 1-255)
Default Configuration
The default robustness value is 2.
Command Mode
Interface Configuration (VLAN) mode
User Guidelines
This command has no user guidelines.
Example
The following example configures a robustness value of 10 for VLAN 15.
console(config)#interface vlan 15
console(config-if-vlan15)#ip igmp robustness 10
ip igmp startup-query-count
Use the ip igmp startup-query-count command in Interface VLAN
Configuration mode to set the number of queries sent out on startup — at
intervals equal to the startup query interval for the interface.