From: Ash (nester2k@gmail.com)
Date: Thu Feb 22 2007 - 15:34:57 ART
Dont know off a way how this could be accomplished through a config change.
The algorithm will have to be tweaked i imagine, to allow the MA's to prefer
the advertising RP with a lower IP over the higher one.
My 0.02 cents :)
On 2/22/07, BitGossip <bit.gossip@chello.nl> wrote:
>
> What about if you want the RP with the lowest IP to be RP and the other
> with
> highest IP to be the backup?
>
> Luca
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Ash
> Sent: 22 February 2007 16:25
> To: achievewoo@gmail.com
> Cc: ccielab@groupstudy.com
> Subject: Re: how to set backup RP in spare-mode?
>
> Hey,
>
> You can do it by using " ip pim send-rp-announce loop0 group-list
> interval", pretty much the same way as BSR. Just make sure that both the
> RP's are supporting the same groups, thus there's an overlap. When this
> happens, the MA will see the both the RP's and choose the RP with the
> highest advertising Ip address (this is the IP of the loopacks in your
> config). Once the MA chooses one RP, it'll advertise that RP as being the
> only RP available for all groups. Other MA's will follow as they use the
> same algorithm.
>
> In an event when failure occurs, there'll be a outage which is directly
> related to the interval you specify in your auto rp config as the MA's
> simply pass on that interval to the other Multicast routers and use it to
> detect a downed RP. Soon as the chosen RP stops announcing, the MA's will
> age out the existing RP and chose a new one and will pass on the new one
> to
> the rest of the MC routers.
>
> Hope this helps.
>
> On 2/22/07, achievewoo@gmail.com <achievewoo@gmail.com> wrote:
> >
> > As I know, using ip pim rp-candidate lo0 group-list X priority XX can
> > reach the target. Execpt above method, how to set backup RP if I try to
> use
> > AUTO-RP mode?
> >
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