Re: ASBR Selection

Can you provide us with any links to this command? I'm not able to find
anything regarding it on IOS.

Thank you

Tom

On Tue, May 29, 2012 at 12:45 PM, Cisco Router <angryrouter_at_gmail.com>wrote:

> Tony,
> It's not a selection but an election. Within each area an RDR
> (Redistribution
> Designated Router) is elected. The RDR is responsible for external route
> redistribution within an area. Stub and totally stub areas do not have an
> RDR since no redistribution occurs in these types of areas. When there is
> only a single point of redistribution within an area there isn't any
> election but once you have multiple points of redistribution the RDR is
> elected.
>
> Under the OSPF process configure the preferred router to become the RDR as
> such:
>
> router ospf 1
> area X redistribution priority 100
>
> If there is a tie with the redistribution priority between routers, the
> router with the longest host-id (aka hostname) wins. To disable this
> behavior use the command below:
>
> router ospf 1
> no redistribute compare host-id
>
> If you can't find these commands it could be because they are only in the
> newer IOS versions.
>
> As a side note in production environments watch out for Juniper routers.
> They will make a lot of pre-redistribution election promises but never
> follow through once elected. Once again they over promise but under
> deliver.
>
> Hope this helps!
>
> On May 28, 2012, at 1:54, Vincent Tay <vtay.75_at_gmail.com> wrote:
>
> Hi all,
> If there are two ASBRs redistributing routes, will there be any selection?
> From what i have try, the router that i clear the ospf process will end up
> advertising the type 5 routes. I am quite confuse with it.
> EIGRP
> ____________________________________
> | |
> | |
> | |
> R3(ASBR)------------------------------R2(ASBR) !
> Redistributing EIGRP into OSPF
> | |
> | |
> | |
> OSPF Area Routers
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Received on Tue May 29 2012 - 12:58:09 ART