[c-nsp] ASR9000 Import/Exporting between two VRFs

Steve Dodd steve.dodd at sungardas.com
Tue Jun 14 21:11:47 EDT 2016

This seems like a good use case for VASI interfaces.


On 6/14/16, 3:22 PM, "cisco-nsp on behalf of Curtis Piehler"
<cisco-nsp-bounces at puck.nether.net on behalf of cpiehler2 at gmail.com> wrote:

>Quite the curious case here.  An ASR9000 router has two VRFs.
>For simplicity sake let's call them VRF A and VRF B.
>VRF A and VRF B need to be able to see each other's routes via importing
>and exporting however here's the catch.
>I need VRF A to see VRF B's routes and vice versa but with prepends.
>Basically when VRF A's routes are imported into VRF B they need to look
>farther away and vice versa.  All PE routers that have VRF A need to see
>routes that belong to it unaltered and PE routers that have VRF B need to
>see routes that belong to it unaltered.
>I tried to prepend based on matching an RD set within the import and/or
>export statements but I get the error "Policy [XYZ] uses 'rd rdmatch'.
>'in' is not a valid operate for the 'rd' attribute at the bgp import
>I know I can hair pin two ports on ASR9000 and run eBGP across them using
>the local-AS command and exchange routes between VRFs that way.
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