Re: Auto RP with sparse-mode and no dm-fallback..and its

Mohamed,

Take a look at this:

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtautorp.html

On Aug 25, 2009, at 11:20 PM, Mohamed El Henawy wrote:

> Hello Nathan ,
>
> we put the no dm fallback when we use sparse mode ...as per Cisco ..
>
> Benefits of Auto-RP in a PIM Network , step 14
> http://www.cisco.com/en/US/docs/ios/ipmulti/configuration/guide/imc_basic_cfg_ps6350_TSD_Products_Configuration_Guide_Chapter.html
>
> my problem that I have done everything to prevent R3 to know the
> mapping but yet I find that R3 knows the mapping
>
>
>
>
> ----- Original Message ----- From: "Nathan Richie" <nathanr_at_boice.net>
> To: "Mohamed El Henawy" <m.henawy_at_link.net>; "Cisco certification" <ccielab_at_groupstudy.com
> >
> Sent: Wednesday, August 26, 2009 12:12 AM
> Subject: RE: Auto RP with sparse-mode and no dm-fallback..and its
> working
>
>
> Using "no ip pim dm-fallback" would not have any bearing since you
> are using sparse mode (you would need sparse-dense mode for this
> command to have an effect).
>
> Have you configured the "ip pim autorp-listener" command? Also
> which router is your mapping agent?
>
> ________________________________________
> From: nobody_at_groupstudy.com [nobody_at_groupstudy.com] On Behalf Of
> Mohamed El Henawy [m.henawy_at_link.net]
> Sent: Tuesday, August 25, 2009 4:09 PM
> To: Cisco certification
> Subject: Auto RP with sparse-mode and no dm-fallback..and its working
>
> Hello Group ,
>
> this might be a silly question but...still I wish to learn
> how :) ..I'm tired
> of multicast really
>
> I have this setup
>
> f0/0--R1----LAN-----R2-----FR-----R3---LAN---R5
>
>
> - I have put ip pim sparse mode on the interfaces
> - configured auto rp on R2 with specific ACL
> -put no ip pim dm-fallback on R2 & R3
> -Join the group I permitted with the ACL on R1 F0/0
>
> my question is ....how come ( without any pings from R3 ) I see the
> rp mapping
> on R3 & R5 ? if I'm blocking the 39 & 40 groups as I'm using ACL
> with the RP (
> correct ? ) and I'm putting no ip pim dm-fallback
>
>
> where is the trick ?
>
> Thanks....
>
>
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Received on Wed Aug 26 2009 - 00:34:24 ART