From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Wed Oct 24 2007 - 02:55:55 ART
You typically use it in Multicast testing to insure that the stub device
(router or switch) is not elected as the DR otherwise it will not forward
PIM messages upstream.
However, in real world, you'd use it to force which router will be
forwarding the pim requests upstream if there are multiple routers on the
same LAN segment.
On 10/24/07, nagendra kumar <nagendranainar@yahoo.co.in> wrote:
>
> Hi Ben,
>
> When you use IGMPv1, it doesnt support querier election. So it
> will rely on PIM to select the router which should sends the IGMP query
> to the shared LAN. PIM selects the querier router based on highest
> IP address by default. You can influence the election by using
> this command.
>
> Regards,
> Nagendra
>
> Ben Zheng <bzheng8989@yahoo.com> wrote: I try to understand when I shall
> use the ip pim dr-priority to set PIM DR. Can
> someone explain a use cases to show how PIM DR is required in order for
> multicasting to work?
>
> TIA,
>
>
> Ben
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