Specifications

ip igmp last-member-query-count
10-18 IGMP Configuration
ip igmp last-member-query-count
Usethiscommandtosetthenumberofgroup‐specificqueriessentbeforeassumingthereareno
localmembers.ThenoformofthiscommandresetstheIGMPlastmemberquerycounttothe
defaultvalueof2.
Syntax
ip igmp last-member-query-count count
no ip igmp last-member-query-count
Parameters
Defaults
None.
Mode
Interfaceconfiguration:C3(su)‐>router(Config‐if(Vlan1))#
Example
ThisexampleshowshowtosettheIGMPlastmemberquerycountto10onVLAN1:
C3(su)->router(Config)#interface vlan 1
C3(su)->router(Config-if(Vlan 1))#ip igmp last-member-query-count 10
ip igmp robustness
UsethiscommandtoconfiguretherobustnesstuningforexpectedpacketlossonanIGMP
routinginterface.ThenoformofthiscommandresetstheIGMProbustnessvaluetothedefaultof
2.
Syntax
ip igmp robustness robustness
no ip igmp robustness
Parameters
Defaults
None.
Mode
Interfaceconfiguration:C3(su)‐>router(Config‐if(Vlan1))#
count SpecifiesthenumberofIGMPstartupqueries.Validvaluesarefrom1to
20.Thedefaultvalueis2.
robustness SpecifiestheIGMProbustnessvalue.Validvaluesarefrom1to255.The
defaultvalueis2.