From: Zouta oxpf (zouta.oxpf@gmail.com)
Date: Sun Sep 04 2005 - 07:52:44 GMT-3
John,
If R2 is not configured for multicast, maybe a tunnel between R1 and R3
would suffice. But if R2 is running PIMv2, like all the routers, they all
will certainly receive the BSR info. from the elected BSR, because it is
flooded hop by hop. The BSR information contains the data all the PIM
routers need to determine who the RP is. Auto rp-listener would not be
needed. Again, my opinion here.
Regards
Z
On 9/4/05, John Matus <jmatus@pacbell.net> wrote:
>
> ok, i haven't looked @ multicast in 2 months......
> don't you need to use auto-rp listener in the case where you are using
> sparse mode but and one of the clients is not directly connected to the
> rp?
>
> R1------------------------R2------------------------------R3(rp)
> auto-rp-listener
>
>
>
> Regards,
>
> John D. Matus
> MCSE, CCNP
> Office: 818-782-2061
> Cell: 818-430-8372
> jmatus@pacbell.net
> ----- Original Message -----
> From: "Zouta oxpf" <zouta.oxpf@gmail.com>
> To: "Imal kalutotage" <imal.kalutotage@gmail.com>
> Cc: "Cisco certification" <ccielab@groupstudy.com>
> Sent: Saturday, September 03, 2005 12:26 PM
> Subject: Re: ip pim auto rp listner
>
>
> > Imal,
> >
> > I thought the auto listener feature was just designed for auto-rp groups
> > 224.0.1.39 <http://224.0.1.39> <http://224.0.1.39> and
224.0.1.40<http://224.0.1.40><
> http://224.0.1.40>. It
> > allows
> > the routers to treat these groups silently as dense mode groups.
> >
> > BSR, on the other hand, uses a combination of unicast and multicast. BSR
> > sends BSR messages to all pim routers at 224.0.0.13 <http://224.0.0.13><
> http://224.0.0.13>
> > with
> > a TTL = 1, similar to ospf (well, the address is link-scoped)
> >
> > In my opinion, I do not think the command is needed with BSR. But then
> > this
> > opinion is subject to serious scrutiny.
> >
> > Regards
> > Z
> >
> > On 9/3/05, Imal kalutotage <imal.kalutotage@gmail.com> wrote:
> >>
> >> Hi Group,
> >> I need to clarify the following..
> >> if we are only allowed to use sparse-mode, we need to use 'ip pim auto
> rp
> >> listner"
> >> in case we use auto rp for rp election..{Pls correct me if I am wrong}
> >> Do we have to use the same command, if we have to use BSR instead of
> >> Auto-rp?
> >> Cheers,
> >> Imal
> >>
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