Specifications

RoamAbout Mobility System Software Command Line Reference 13-21
show igmp querier
Displaysinformationabout theactivemulticastquerier,ononeVLANorallVLANs.Queriersare
listedseparatelyforeachVLAN.Ea chVLANcanhaveonlyonequerier.
Syntax
show igmp querier [vlan vlan-id]
Parameters
Defaults
None.
Mode
Enabled.
Examples
ThefollowingcommanddisplaysquerierinformationforVLANorange:
RBT-8100# show igmp querier vlan orange
Querier for vlan orange
Port Querier-IP Querier-MAC TTL
---- --------------- ----------------- -----
1 193.122.135.178 00:0b:cc:d2:e9:b4 23
ThefollowingcommandshowstheinformationMSSdisplayswhenthequerieristheRo amAbout
switchitself:
RBT-8100# show igmp querier vlan default
Querier for vlan default:
I am the querier for vlan default, time to next query is 20
Theoutputindicateshowmanysecondsremainbeforethepseudo‐querierontheswitch
broadcaststhenextgeneralqueryreporttoIPaddress224.0.0.1,themulticastall‐systemsgroup.
IfIGMPsnoopingdoesnotdetectaquerier,the outputindicatesthi sfinding,asshowninthe
followingexample:
RBT-8100# show igmp querier vlan red
Querier for vlan red:
There is no querier present on vlan red
Thisconditiondoesnotnecessarilyindicateaproblem.Forexample,electionofthequeriermight
beinprogress.
Table 13‐3onpage 13‐22describesthefieldsinthedisplaywhenaquerierotherthanthe
RoamAboutswitchispresent.
vlanvlan‐id VLANnameornumber.Ifyoudonotspeci fya
VLAN,MSSdisplays
querierinformationforallVLANs.