igmp robust-count
Use igmp robust-count to set the IGMP querier's robustness variable on an interface.
Use undo igmp robust-count to restore the default.
Syntax
igmp robust-count count
undo igmp robust-count
Default
The IGMP querier's robustness variable is 2.
Views
Interface view
Predefined user roles
network-admin
mdc-admin
Parameters
count: Specifies an IGMP querier's robustness variable in the range of 1 to 255.
Usage guidelines
The IGMP querier's robustness variable defines the number of times to retransmit queries if packet loss occurs. A higher robustness variable makes the IGMP querier more robust, but it increases timeout time for multicast groups.
You can set the IGMP querier's robustness variable for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.
Examples
# Set the IGMP querier's robustness variable to 5 on VLAN-interface 100.
<Sysname> system-view [Sysname] interface vlan-interface 100 [Sysname-Vlan-interface100] igmp robust-count 5
Related commands
robust-count (IGMP view)