[c-nsp] IOS-XR BGP Aggregate-addresses and VRF Export route-policy behaviour

[Adam Vitkovsky]

> Mailing Lists
> Sent: Saturday, October 01, 2016 1:51 PM
>
> Need a second opinion on what should be happening with VRF export route-
> policies on IOS-XR when using BGP aggregate-address prefixes...
>
> Example scenario:
>
> 3 VRF's A,B and C
>
> A and B export specific prefixes to C using an export route-policy
>
> A contains an aggregate-address in BGP
>
> BGP aggregate gets tagged and exported to C even though the route-map
> specifies the specific longer prefix. This sort of behavior is repeatable on
> ASR9K running 5.2.4 and 5.3.3 SP3 as well as XRv running 5.3.3 which my
> example below is taken from
>
> Full Configuration from the XRv test example:
>
> http://pastebin.com/z0q3TTQB
>
> Routing table and BGP table from vrf-c and
>
> http://pastebin.com/nAc2vHza
>
> You can see the aggregate tagged with the RT that should only apply to the
> specific prefixes.
>
> Have I properly misunderstood something and this is intentional behavior, or
> is this very wrong?
>
Looks like a funky bug.
Does changing the match criteria in the export route-policy have any effect?

adam







        Adam Vitkovsky
        IP Engineer

T:      0333 006 5936
E:      Adam.Vitkovsky at gamma.co.uk
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