From: Mike Flanagan (mikenoc@mindspring.com)
Date: Mon Nov 28 2005 - 17:41:49 GMT-3
On Nov 28, 2005, at 12:07 PM, Edwards, Andrew M wrote:
> Mike,
>
> Somehow, all routers need to know who the RP is... You can do this
> through 3 ways. Static, auto-rp, and BSR. You must decide which
> to use
> depending upon the restrictions/topology.
- I am using PIM sparse mode on all routers
>
> As for the message you are seeing, ask yourself this question, "Why is
> the router 112.1.12.8 attempting to join the Auto-RP assigned
> multicast
> address 224.0.1.40 for a sparse-mode/sparse-dense mode configuration?"
- I also have statically set the RP to the 192.168.1.1 address.
One config that I had added on these routers that I do not believe I
needed was the ip pim autorp listener command. maybe that was forcing
these routers to join the RP address as if it where running sparse-
dense mode. Since removing this I have not seen this message reoccur.
>
>
> The answer lies in understanding how Auto-RP uses its multicast groups
> and using filters to ensure groups that are meant to be dense-mode
> only
> do not revert to sparse-mode.
>
> HTH,
>
> andy
> -----Original Message-----
> From: Mike Flanagan [mailto:mikenoc@mindspring.com]
> Sent: Monday, November 28, 2005 1:04 AM
> To: Cisco certification
> Subject: Configuring Anycast RP
>
>
> Hello,
>
> Looking at the example for anycast RP on the RP routers you do not
> specify the ip pim rp-address command. So from what this is saying on
> the RP's you just run MSDP between them and do not specify any RP
> with the ip pim rp-address command. Also I am getting an %PIM-6-
> INVALID_RP_JOIN message on routers that seem to be denying joins from
> my catalyst switches ? I found a link on this and it asked to check
> for filtering and I do not have any filtering configured.
>
> Thanks,
>
> Mike F.
>
>
> *Mar 3 00:23:04.067: %PIM-6-INVALID_RP_JOIN: Received (*,
> 224.0.1.40) Join from 112.1.12.8 for invalid RP 192.168.1.1
> R5# sh clock
>
>
>
> http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/mcst_sol/
> anycast.htm
>
> http://www.cisco.com/warp/public/105/mcastguide0.html <--- For error
> I am getting
>
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