Re: sink RP...

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

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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)
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> ________________________________
>
> From: 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
> 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
> 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
> 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
> 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, 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 - 01:45:44 ART