Re: ASBR Selection

Hi Tom,

Yes. Thanks. Understood it. The best way to fix this will be changing the
admin distance so EIGRP routes stay with EIGRP domain. Thanks.

Regards

On Tue, May 29, 2012 at 1:32 PM, Tom Kacprzynski <tom.kac_at_gmail.com> wrote:

> You got it Vincent! So now how did you go about fixing it, now that you
> understand the problem?
>
>
> On Tue, May 29, 2012 at 12:16 AM, Vincent Tay <vtay.75_at_gmail.com> wrote:
>
>> Hi Mark/Tom,
>>
>> Thanks. Finally, I have got the concept right. ASBRs (R3 and R2) will not
>> have any election. For EIGRP external routes (170), if R3 is the first to
>> redistribute, R2 will accept the OSPF routes from R3 since it has higher
>> admin distance (110) and its routing table will flush out its EIGRP
>> external (170) routes and thus will not be able ro redistribute the routes
>> back to R3. This process of operation will happen similarly if R2 is the
>> first to redistribute. So, it is a matter on the order of operation
>> process. Thanks for the enlightenment.
>>
>> Data plane path calculation will be base on advertising router and FA if
>> present to the ASBR.
>>
>> Regards
>>
>> On Tue, May 29, 2012 at 12:52 AM, Marko Milivojevic <markom_at_ipexpert.com
>> >wrote:
>>
>> > There is no election. All ASBRs advertise routes that are redistributed.
>> > OSPF routers then calculate the best paths to those ASBRs or FA (if
>> > present) and chose which routes to use. External metrics are compared
>> first
>> > though.
>> >
>> > --
>> > Marko Milivojevic - CCIE #18427
>> >
>> > :: This message was sent from a mobile device. I apologize for errors
>> and
>> > brevity. ::
>> >
>> > On May 28, 2012, at 1:51, 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
>> > > ___________________________________
>> > >
>> > > Thanks.
>> > >
>> > >
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Received on Tue May 29 2012 - 21:57:39 ART