From: WorkerBee (ciscobee@gmail.com)
Date: Mon Dec 17 2007 - 15:46:36 ART
Auto-RP uses the election of highest RP ip address as the tie-breaker.
Since Auto-RP mapping agents use the highest RP for each group or
range of multicast addresses,
Auto-RP provides redundant RP capability.
If you have configured static RP with override feature, static RP has
the highest
precedence over Auto-RP. Static RP does not have a backup, if it
fails, depending on the multicast
mode set on the interface, a lost of RP may resulted in Dense-mode fallback.
For smaller address to become the RP, you need to use BSR (PIM v2)
with the priority command feature
which is not available to Auto-RP.
HTH
On Dec 17, 2007 10:38 PM, nicky noname <cisco2study@gmail.com> wrote:
> Hello,
>
> My question is with regard to the order in which PIM routers choose there RP
> assignment.
>
> Auto-rp is preferred over static rp, unless you use the override feature.
>
> But we also have the highest RP IP address wins ( which is what I think is
> the preferred choice).
>
> Which has precedence, highest IP address or auto-rp assignment over static
> assignment?
>
> I should lab it up and see, but I am unable to for the next few days.
>
> I am wondering if this provides a solution to making a smaller IP address
> the preferred RP, when you are restricted to using loopbacks given.
>
>
> Thanks and regards
> nic
>
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