Re: sink RP...

Right... So by that mere definition alone, you won't need to worry
about excluding the Auto-RP addresses from the sink-hole due to the fact
that they are SENT in dense mode, regardless.... So there won't be an
inherent need to "join" those groups via an RP. Therefore you won't
sinkhole yourself.

;)

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

JNCI-M, JNCI-ER

evil_at_ine.com

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Hoogen wrote:
> The idea is first.. to run most Auto-RP functions we need to have
> interfaces in sparse-dense mode.. that is because the
> groups 224.0.1.39 and .40 are required to use "dense mode" to get to
> all routers.. Darn Cisco couldn't wait until Bootstrap came out... So
> now again if you filter the groups you are going to create in a
> essence a sink hole by terminating traffic from going into unwanted
> directions...
>
> Scott... Auto-RP is a form of dense more anyway.. the groups
> 224.0.1.39 and .40 needs to be advertised in a dense fashion ..
>
> -Hoogen
>
> On Sun, Sep 6, 2009 at 10:45 PM, Scott Morris <smorris_at_ine.com
> <mailto:smorris_at_ine.com>> wrote:
>
> A sink-hole RP is designed to self-terminate traffic in case the
> main RP
> goes away. It helps prevent traffic from running off in rampant
> directions, or worse into dense mode. :)
>
> You can also use it just for preventing anyone joining unauthorized
> groups. Local termination, less traffic through your network. It's a
> design concept.
>
> HTH,
>
>
>
>
> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider)
> #4713,
>
> JNCIE-M #153, JNCIS-ER, CISSP, et al.
>
> JNCI-M, JNCI-ER
>
> evil_at_ine.com <mailto:evil_at_ine.com>
>
>
> Internetwork Expert, Inc.
>
> http://www.InternetworkExpert.com
>
> Toll Free: 877-224-8987
>
> Outside US: 775-826-4344
>
>
> Knowledge is power.
>
> Power corrupts.
>
> Study hard and be Eeeeviiiil......
>
>
>
>
>
> Jacob Uecker wrote:
> > I don't believe I've heard the term "sink RP". What are you
> trying to
> > accomplish?
> >
> > Thanks,
> >
> > Jacob Uecker
> > CCIE# 24481
> >
> > Development Engineer
> > CCBOOTCAMP - Cisco Learning Solutions Partner (CLSP)
> > Toll Free: 877-654-2243
> > International: +1-702-968-5100
> > Skype: skype:ccbootcamp?call
> > FAX: +1-702-446-8012
> >
> > YES! We take Cisco Learning Credits!
> > Training And Remote Racks: http://www.ccbootcamp.com
> >
> > ________________________________
> >
> > From: nobody_at_groupstudy.com <mailto:nobody_at_groupstudy.com> on
> behalf of Ronald Johns
> > Sent: Sun 9/6/2009 5:26 PM
> > To: ccie forum
> > Subject: sink RP...
> >
> >
> >
> > Is it necessary to filter 224.0.1.39 and .40 when configuring a
> sink RP? I
> > came across this in a practice lab and didn't do this, but my RP
> mapping
> > (using auto-rp) still showed up okay:
> >
> > R1#sh ip pim rp map
> > PIM Group-to-RP Mappings
> >
> > Group(s) 225.0.144.1/32 <http://225.0.144.1/32>
> > RP 2.2.2.2 (?), v2v1, bidir
> > Info source: 2.2.2.2 (?), elected via Auto-RP
> > Uptime: 23:15:07, expires: 00:02:41
> > Group(s) 225.0.144.2/32 <http://225.0.144.2/32>
> > RP 2.2.2.2 (?), v2v1, bidir
> > Info source: 2.2.2.2 (?), elected via Auto-RP
> > Uptime: 23:15:07, expires: 00:02:45
> > Group(s) 225.0.144.3/32 <http://225.0.144.3/32>
> > RP 2.2.2.2 (?), v2v1, bidir
> > Info source: 2.2.2.2 (?), elected via Auto-RP
> > Uptime: 23:15:07, expires: 00:02:41
> > Group(s) 225.0.144.4/32 <http://225.0.144.4/32>
> > RP 2.2.2.2 (?), v2v1, bidir
> > Info source: 2.2.2.2 (?), elected via Auto-RP
> > Uptime: 23:15:07, expires: 00:02:42
> > Group(s): 224.0.0.0/4 <http://224.0.0.0/4>, Static
> > RP: 1.1.1.1 (?)
> >
> > Thanks,
> >
> > Ron Johns
> > Sr. Network Engineer
> > IT Department
> > CCNP, CCDP, CCSP, CISSP
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Received on Mon Sep 07 2009 - 07:53:02 ART