From: ccie champ (ccie.champ@gmail.com)
Date: Fri Jun 06 2008 - 06:54:49 ART
We can assume that there are two loopbacks are available on two routers.
R1- Lo1 & Lo2
R2- Lo1 & Lo2
Now let's say that Lo1 ip address is higher on R1 and Lo2 ip address is
higher
What If we configure auto-rp using Lo2 then which router will be primary RP
and which will be backup RP?
HTH
On 6/6/08, Chris Gray <chris.gray@ozonenetworks.net> wrote:
>
> I wonder on a solution like this whether you would be permitted to create a
> new Loopback interface with a higher numerical value to get the RP you
> want,
> or whether they are hinting for you to configure the RP on an interface
> which has a higher numerical value in the first place , even if its not a
> Loopback interface?
>
> KRIZ
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Mike
> M
> Sent: 06 June 2008 01:23
> To: 2008ccie@live.com
> Cc: ccielab@groupstudy.com
> Subject: Re: Backup RP
>
> As far as I am aware (auto-rp) the primary RP should
> be the interface with the higher numerical ip address.
>
> So, in your case R4 loopback0 address should be the
> designated RP if the R4 loopback address is higher
> than R2 loopback0.
>
> Cheers
> Mike
>
> --- 2008ccie@live.com wrote:
>
> > hi experts
> >
> > i have 5 routers
> >
> > R1-------R2-----R3-----R4------R5
> >
> > R1 and R2 framerelay
> >
> > R2 R3 R4 R5 fastethernet
> >
> > I would like to announce R4 as the primary RP and R2
> > as the Backup RP
> >
> > R4
> > ip pim send-rp-announce Loopback0 scope 10
> > group-list 20
> > ip pim send-rp-discovery Loopback0 scope 10
> >
> > R2
> > ip pim send-rp-announce Loopback0 scope 10
> > group-list 20
> > ip pim send-rp-discovery Loopback0 scope 10
> >
> > but R2 always select as primary RP
> >
> > can anyone correct me?
> >
> > how to set the backup RP?
> >
> > Regards
> >
> >
> >
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