RE: ospf with vrf

It depends, what area is your CE-to-PE adjacency in?

Remember a router will not use IA routes learned from a none backbone area
IF it's an ABR. When you create a VRF-OSPF instance, it automatically
becomes part of the MPLS Super backbone, essentially part of Area 0. This
is why the 'capability vrf-lite' feature is needed. It removes the router
from the Super backbone, meaning you can now install Type 3 LSA information
into the RIB, learned from none backbone areas. It also disables the
Down-bit check.

-Yuri
On Jun 16, 2012 9:09 PM, "Aaron" <aaron1_at_gvtc.com> wrote:

> I think I found the answer, although I don't fully understand it all yet.
> I
> have heard about this before and recall some of it.
>
> This seemed to do the trick...under, router ospf vrf testvrf "capability
> vrf-lite"
>
> I read this. https://supportforums.cisco.com/thread/202402
>
> Apparently it has something to do with loop prevention and "pe checks" of
> domain id and down bit or something like that to keep pe from adding
> anything other than type 1 and 2's to rib.
>
> Aaron
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Aaron
> Sent: Saturday, June 16, 2012 10:15 PM
> To: 'Ccielab_at_groupstudy.com'
> Subject: ospf with vrf
>
> why does my pe lose the ability to add type 3 (summary) routes to its rib
> AFTER I convert its ospf process to vrf ?
>
>
>
> in other words, when my pe's ospf process does not have vrf config I see
> the
> IA routes to other areas, but as soon as I change my ospf process to vrf I
> lose my IA routes. They are still in the ospf db though, but just not
> being
> added to the RIB.
>
>
>
> Aaron
>
>
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Received on Sun Jun 17 2012 - 00:03:38 ART