ip igmp robustness
11-16 IGMP Configuration
Example
ThisexampleshowshowtosettheIGMPlastmemberquerycountto10onVLAN1:
C2(su)->router(Config)#interface vlan 1
C2(su)->router(Config-if(Vlan 1))#ip igmp last-member-query-count 10
ip igmp robustness
UsethiscommandtoconfiguretherobustnesstuningforexpectedpacketlossonanIGMP
routinginterface.ThenoformofthiscommandresetstheIGMProbustnessvaluetothedefaultof
2.
Syntax
ip igmp robustness robustness
no ip igmp robustness
Parameters
Defaults
None.
Mode
Interfaceconfiguration:C2(su)‐>router(Config‐if(Vlan1))#
Usage
ThisvaluedetermineshowmanytimesIGMPmessageswillbesent.Ahighernumberwillmean
thatendstationswillbemorelikelytoseethepacket.Aftertherobustnessvalueisreached,IGMP
willassumethereisnoresponsetoqueries.
Example
ThisexampleshowshowtosettheIGMProbustnessvalueto5onVLAN1:
C2(su)->router(Config)#interface vlan 1
C2(su)->router(Config-if(Vlan 1))#ip igmp robustness 5
robustness SpecifiestheIGMProbustnessvalue.Validvaluesarefrom1to255.The
defaultvalueis2.