MP-BGP or OSPF in the core makes it a superbackbone?

On Saturday, December 1, 2012, Marko Milivojevic <[email protected]>
wrote:
> Sham-link is not a superbackbone. MP-BGP is a superbackbone. And yes,
> you can set-up sham-link between any two PEs, as long as they have the
> routes to each other.
>
> --
> Marko Milivojevic - CCIE #18427 (SP R&S)
> Senior CCIE Instructor - IPexpert
>
> On Fri, Nov 30, 2012 at 5:08 AM, Ryan Krcelic <[email protected]>
wrote:
>> Is it possible to setup a sham-link on a single router between 2
different
>> VRFs?  For example in WB3 Lab 10 you setup the OSPF super backbone
between
>> R1-R9-R2.  Once you adjust the ospf domain-id on R9 you get the routes
from
>> R1 to show on R2 as IA and vice versa.  Is it possible to setup a
sham-link
>> on R9 between ospf process AS1 and ospf process AS2?
>>
>> Sample config
>> Router ospf 1 vrf AS1
>> Redis bgp 69 subnets
>> Router ospf 2 vrf AS2
>> Redis bgp 69 subnets
>> Router bgp 69
>> Add ipv4 vrf AS1
>> Redist ospf 1 match internal
>> Add ipv4 vrf AS2
>> Redist ospf 2 match internal
>>
>> I tried creating 2 new loopbacks, redistributing them into BGP and
>> configuring the SHAM-Link under each OSPF process but the sham-link would
>> not come up.  Is this normal behavior?  Are you required to have 2 PE
>> routers to establish a Sham-link?
>>
>> V/r,
>>
>> Ryan Krcelic
>>
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> _______________________________________________
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visit www.ipexpert.com
>
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>
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-- 
Samir Idris
_______________________________________________
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