A question on multicast states in non-querier

Hi All,

      If there are two IGMP routers on a LAN, one of them gets elected as querier and another as non-querier.

      The querier sends query and hosts on that LAN reply with the reports. Querier sees those report and create a database. Non-querier also sees those report and would create the same database.

      Question is whether Multicast routing protocol running on non-querier's upstream interface should use this database to join/leave the multicast group or not?

      IIRC, it is required because the DR for that LAN could be the non-querier router and if we do not join upstream, multicast data won't flow to this router. Is this a correct thinking?

Regards,
Bharat
**************** CAUTION - Disclaimer *****************
This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely 
for the use of the addressee(s). If you are not the intended recipient, please 
notify the sender by e-mail and delete the original message. Further, you are not 
to copy, disclose, or distribute this e-mail or its contents to any other person and 
any such actions are unlawful. This e-mail may contain viruses. Infosys has taken 
every reasonable precaution to minimize this risk, but is not liable for any damage 
you may sustain as a result of any virus in this e-mail. You should carry out your 
own virus checks before opening the e-mail or attachment. Infosys reserves the 
right to monitor and review the content of all messages sent to or from this e-mail 
address. Messages sent to or from this e-mail address may be stored on the 
Infosys e-mail system.
***INFOSYS******** End of Disclaimer ********INFOSYS***