Observing Syntax and Conventions
7-86 Configuring IP Multicast

ip igmp last-member-query-interval

ThiscommandsetsthefrequencyatwhichIGMPgroupspecifichostquerymessagesaresent.
Syntax
ip igmp last-member-query-interval interval
Syntax of the “no” Form
Thenoformofthiscommandsetsthisfrequencytothedefault:
no ip igmp last-member-query-interval
Mode
Interfaceconfiguration:XSR(config-if<xx>)#
Default
1000milliseconds
Example
ThisexamplechangestheIGMPgroupspecifichostquerymessageintervalto2seconds:
XSR(config-if<F1>)#ip igmp last-member-query-interval 2000

ip igmp query-interval

ThiscommandconfiguresthefrequencyatwhichtheXSRsendsIGMPhostquerymessages.
Syntax
ip igmp query-interval seconds
Syntax of the “no” Form
Thenoformofthiscommandsetsthisfrequencytothedefaultvalue:
no ip igmp query-interval
Mode
Interfaceconfiguration:XSR(config-if<xx>)#
Default
125seconds
interval FrequencytosendIGMPgroupspecifichostquerymessages,ranging
from100to65535milliseconds.
seconds FrequencytosendIGMPhostquerymessages,rangingfrom1to32767seconds.