Re: OSPF SHAM-LINK

I believe if you are using the same OSPF process ID on both sides, you
should get O routes. I am pretty sure the domain-ID by default is
taken from the process ID number you are running. If they were
different domain IDs though, you should be seeing O E2 routes so that
is why I say it is a bit strange.

On Tue, Mar 30, 2010 at 12:57 AM, Ahmed Ejaz <aahmedejaz_at_gmail.com> wrote:
> 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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>>
>>
>>
>> --
>> Regards,
>>
>>
>>
>> Joe Astorino - CCIE #24347
>> Sr. Technical Instructor - IPexpert
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>

-- 
Regards,
Joe Astorino - CCIE #24347
Sr. Technical Instructor - IPexpert
Mailto: jastorino_at_ipexpert.com
Telephone: +1.810.326.1444
Live Assistance, Please visit: www.ipexpert.com/chat
eFax: +1.810.454.0130
IPexpert is a premier provider of Self-Study Workbooks, Video on
Demand, Audio Tools, Online Hardware Rental and Classroom Training for
the Cisco CCIE (R&S, Voice, Security & Service Provider)
certification(s) with training locations throughout the United States,
Europe, South Asia and Australia. Be sure to visit our online
communities at www.ipexpert.com/communities and our public website at
www.ipexpert.com
Blogs and organic groups at http://www.ccie.net