Re: pim auto-rp priority missing?

From: Ernest Wambari <ewambari_at_gmail.com>
Date: Fri, 3 Apr 2009 20:13:28 +0300

On DocCD:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_44_se/configuration/guide/swmcast.html

" the mapping agent selects the router or switch with the highest IP address
as the active RP and stores this RP address in the Group-to-RP mapping
cache."

W.

On Fri, Apr 3, 2009 at 8:08 PM, Salah ElShekeil
<salah.elshekeil_at_gmail.com>wrote:

> here you go
>
>
> http://www.cisco.com/en/US/tech/tk828/technologies_configuration_example09186a00801cb923.shtml
>
>
> *!--- R4 is elected because it has a higher IP address*
>
> HTH
>
> Salah
>
> 54 PM, Wouter Prins <wp_at_null0.nl> wrote:
>
> > Thanks for the replies everyone, do you have a link that states that the
> > higher ip will win in this situation? I was not able to find that at all.
> :)
> >
> > 2009/4/3 Salah ElShekeil <salah.elshekeil_at_gmail.com>
> >
> > Auto-RP
> >>
> >>
> >>
> >> Multiple RPs can be used to serve different group ranges or *serve as
> >> backups to each other*. For Auto-RP to work, a router must be designated
> >> as an RP-mapping agent, which receives the RP-announcement messages from
> the
> >> RPs and arbitrates conflicts. The RP-mapping agent then sends the
> consistent
> >> group-to-RP mappings to all other routers. Thus, all routers
> automatically
> >> discover which RP to use for the groups they support.
> >> Directly from the DOC cd
> >>
> >> the higher ip address will be the RP,
> >>
> >>
> >>
> >> On Fri, Apr 3, 2009 at 6:28 PM, Wouter Prins <wp_at_null0.nl> wrote:
> >>
> >>> hi list,
> >>>
> >>> I was wondering how to create a backup RP for a certain group when
> using
> >>> Auto-RP. I cannot configure any priorities as you can when configuring
> it
> >>> for use with a bsr?
> >>> I checked the doccd but i am not able to find a similar function? How
> >>> does
> >>> the mapping-agent decide which RP to use when two RP's announce them
> same
> >>> groups in Auto-RP mode?
> >>>
> >>> Thanks,
> >>> --
> >>> Wouter Prins
> >>> wp_at_null0.nl
> >>> 0x301FA912
> >>>
> >>>
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> >>>
> >>
> >
> >
> > --
> > Wouter Prins
> > wp_at_null0.nl
> > 0x301FA912
>
>
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Received on Fri Apr 03 2009 - 20:13:28 ART

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