Richard, As we mentioned yesterday, only routers speak PIM, I am not sure where you got the impression that PIM DRs query the hosts, routers only use IGMP to query the hosts.
I think as many have suggested, nothing is better than reading the specs, in this case, RFC 2117 should explain this pretty well. HTH Kent ----- Original Message ----- From: "richard dumoulin" To: Sent: Friday, August 16, 2002 3:47 AM Subject: Re: Multicast DR and IGMP querier [7:51458] > Raj Santiago wrote: > > > > Hi Richard, > > > > > > Okay your question is basically what is a "IGMP querier and > > Multicast Designated Router" > > > > > > Igmp querier is the router in charge to see if any hosts want > > to listen to a multicast stream. > > > > Designated Router is the router is charge to facilitate pim > > join, prune and register messages(This also depends on the > > mode of pim your running, im being very abstract here); > > Basically the multicast routing part. > > But it seems to me that the DR will also query the hosts!! > > > > > > Under IGMP version 1, the router with the highest ip address > > was BOTH the IGMP querier and Designated Router. > > > > Under IGMP version 2, the router with highest ip address is the > > DR and the router with the lowest ip address is the IGMP querier. > > If I am right, both the DR and the querier will query the hosts ?? > > > Cheers. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51504&t=51458 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
