Re: OSPF SHAM-LINK

Find attached the configs on my PE routers.

The process id is the same and i also include the same domain-id . but the
routes still comes as IA. i guess because the PE routers area pairing with CE
routers with different areas.

--- On Mon, 3/29/10, Ahmed Ejaz <aahmedejaz_at_gmail.com> wrote:

From: Ahmed Ejaz <aahmedejaz_at_gmail.com>
Subject: Re: OSPF SHAM-LINK
To: "Joe Astorino" <jastorino_at_ipexpert.com>
Cc: "Abiola Jewoola" <biola_y2k_at_yahoo.com>, ccielab_at_groupstudy.com
Date: Monday, March 29, 2010, 9:57 PM

I guess the ospf process which you are redistributing into bgp requires a
domain id, that is the reason it is treating it as an IA route. Please add a
domain id on both the sides and the routes should come up as O routes then you
can modify the cost to not prefer the sham link.

 
HTH
Ahmed

On Tue, Mar 30, 2010 at 7:43 AM, Joe Astorino <jastorino_at_ipexpert.com>
wrote:

OSPF routes coming over the sham-link should be regular O routes
(intra-area) and thus should be preferred over O IA routes...post your

configurations something does not seem right about that.

On Mon, Mar 29, 2010 at 10:35 PM, Abiola Jewoola <biola_y2k_at_yahoo.com> wrote:
> Hello G.S
>
> How can i make ospf prefer to forward route routes via ospf sham-link. The

> sham link has has a cost of 10 and the routes are coming as IA routes
across
> the MPLS backbone
>
> The router is preferring the backdoor link even when i have increased the
cost
> as high as 65000. The routes are also advertised as IA routes.

>
> Regards,
> Abiola
>
>
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