From: Toh Soon, Lim (tohsoon28@gmail.com)
Date: Tue Oct 30 2007 - 12:30:09 ART
Hi Brian,
Using my second method, I have verified it is actually functional using "sh
ip pim rp-hash" command.
Can I say that the simplest and straighforward solution is to define ACL on
R5 to permit groups 224-238?
By the way, can we use "deny" in the ACL for "ip pim send-rp-announce
group-list" command? How does the mapping agent respond to it?
Thank you.
B.Rgds,
Lim TS
On 10/30/07, Brian McGahan <bmcgahan@internetworkexpert.com> wrote:
>
> Always choose the simplest solution. Unless the question says that r5
> should never service that group range your answer is correct. You
> would however want to look at the show ip pim rp mapping output to
> make sure that your answer is actually functional.
>
> HTH,
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security)
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.internetworkexpert.com
>
> On Oct 30, 2007, at 8:51 AM, "Toh Soon, Lim" <tohsoon28@gmail.com>
> wrote:
>
> > Hi Group,
> >
> > I have the following Auto-RP scenario:
> >
> > R7
> > --
> > 1. C-RP for 239.0.0.0/8
> > 2. RP address 200.0.0.7
> >
> > R5
> > --
> > 1. Mapping agent
> > 2. C-RP for all groups except 239.0.0.0/8
> > 3. RP address 200.0.0.5
> >
> > I guess one way of configuring this is, we define an ACL on R5 that
> > matches
> > groups 224 until 238 (summarizing whatever we can) and let R5
> > announce this
> > group-list.
> >
> > Another way I'm thinking of is, since R7's IP address is higher than
> > R5's, I
> > will configure R5 to announce, by default, all groups. When R5 and R7
> > contend for group 239.0.0.0/8, R7 will win. R5 will be RP for the
> > rest of
> > the groups. In the end, this solution meets the task requirement and
> > does
> > not violate any rules but is it acceptable?
> >
> > Please share if you have other methods.
> >
> >
> > Thank you.
> >
> > B.Rgds,
> > Lim TS
> >
> > _______________________________________________________________________
>
>
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