All things related to multicast

Oh wait.. I think I know what you're after..

YES, if you change the priority of the candidate DR so that it becomes the 
elected DR, then the magic of IGMP/PIM will move the state. Then you can 
do what you like with the other router as it is no longer in the path.

Setting the PIM hello interval will help reduce the convergence times upon 
an unscheduled failure event.

Greg

On Tue, 30 Nov 2004, John Kristoff wrote:

> On Tue, 30 Nov 2004 12:35:26 -0800 (PST)
> 
>  wrote:
> 
> > Setting DR priority will only set which router win's DR election - 
> > overriding the normal IP-based election.
> > 
> > If you want faster DR failover, tweak down the PIM hello timers. 
> > This is what is used for a candidate DR to determine that the elected DR 
> > is either alive or dead.
> 
> OK, thanks.  I guess that will have to do.  I thought that I might
> be able to gracefully migrate the DR to another interface, which would
> magically move PIM state by issuing the associated joins and prunes, but
> I guess that is just asking for too much magic.  :-)
> 
> John
>