From: Carlos Trujillo Jimenez (nergal888@hotmail.com)
Date: Tue Feb 12 2008 - 10:03:48 ARST
r1(config)#ip pim autorp ? listener Allow AutoRP packets across sparse mode
interface
r1(config)#ip pim autorp lr1(config)#ip pim autorp listener
> Date: Mon, 11 Feb 2008 23:29:33 -0800> From: suzan_ccie@yahoo.com> Subject:
Re: How to Prevent Dense Mode Fallback> To: backbone.systems@gmail.com;
kvapzarov@yahoo.com> CC: ccielab@groupstudy.com> > ip pim-fallback is used
when using sparse-dense-mode> ip pim rp-listener is used when using
sparse-mode only> > Group can correct me if this wrong.> > > backbone systems
<backbone.systems@gmail.com> wrote:> I think u r correct.> > The no ip pim
dm-fallback command only prevents interfaces configured> as pim sparse-dense
mode from becoming dense interfaces if RP> configuration is lost.> > > BB> >
On Feb 12, 2008 2:11 AM, Kubrat Vapzarov wrote:> > Is configuring all
multicast interfaces as pim sparse-mode enough to prevent the router from
falling back to dense mode? I read ten different articles on just this topic
and the more I read the more confused I get. I have the feeling that some of
the authors are confused themselves too. The Cisco on-line documentation is
also unclear. Once it says that by configuring BSR we absolutely prevent
falling back to dense mode another time they state just the opposite. The no
ip pim dm-fallback command only prevents interfaces configured as pim
sparse-dense mode from becoming dense interfaces if RP configuration is lost.>
> I guess my question is if the task is to ensure that no DM fallback occurs
what configuration will fulfill the task?> >> >> >
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