import export between VRF and GRE tunnel

[johan oosterwaal]

Hello,

i have a question.

I would like to import export routes between VRF's and use OSPF for this.
But the difficult part is that i want to do this accross a GRE Tunnel.

As below is shown.
VRF TEST1 is fully operational and i would like to import TEST2

How can i accomplish this ?

THANKS

[Moh Mogh]

Hi Johan,

I guess, you will need to add route-target import/export for vrf TEST1 to import/export routes of vrf TEST2 , hence the GRE tunnel is based on vrf TEST1. This solution called Inter VRF route leaking.

Regards,
Mohammad

[johan oosterwaal]

Hello Mohammad,

Thanks for your reply!.

i tried this:

ip vrf TEST1
 rd 65000:1
 route-target export 65000:1
 route-target import 65000:1
 route-target import 65000:2
!
ip vrf TEST2
 rd 65000:2
 route-target export 65000:2
 route-target import 65000:2
 route-target import 65000:1

but after this still no routes are visible in both VRF's.

[Moh Mogh]

Hi Johan,

Please try it like this:

ip vrf TEST1
 rd 65000:1
 route-target export 65000:1
 route-target export 65000:2
 route-target import 65000:1
 route-target import 65000:2
!
ip vrf TEST2
 rd 65000:2
 route-target export 65000:2
 route-target import 65000:2

Regards,
Mohammad

[johan oosterwaal]

Tried it but still no luck.

i'm kinda new with VRF so i correct me if i'm wrong
but could i be that i need to create a static route to connect the VRF's?

[Moh Mogh]

No, there's no need of static route here.

Do you use the below commands to check the routes?
show ip route vrf TEST1
show ip route vrf TEST2

[johan oosterwaal]

Yes i'm using the command :

show ip route vrf TEST1
show ip route vrf TEST2

:)

[Moh Mogh]

Sounds strange, because you should at least see the connected routes in each vrf.

Could you please paste the output of show ip vrf detail?

[johan oosterwaal]

VRF TEST1 (VRF Id = 1); default RD 65000:1; default VPNID <not set>
  Interfaces:
    Tu1                   Gi0/0.1
VRF Table ID = 1
  Export VPN route-target communities
    RT:65000:1             RT:65000:2
  Import VPN route-target communities
    RT:65000:1             RT:65000:2
  No import route-map
  No export route-map
  VRF label distribution protocol: not configured
  VRF label allocation mode: per-prefix

VRF TEST2 (VRF Id = 1); default RD 65000:2; default VPNID <not                                                                                                                                                              set>
  Interfaces:
    Gi0/0.2
VRF Table ID = 1
  Export VPN route-target communities
    RT:65000:2             RT:65000:1
  Import VPN route-target communities
    RT:65000:2             RT:65000:1
  No import route-map
  No export route-map
  VRF label distribution protocol: not configured
  VRF label allocation mode: per-prefix

[Moh Mogh · Accepted solution]

Most important thing I forgot to ask. What about your MP-BGP configuration?

You should have a vrf address-family for TEST2 and redistribute the routes there. There's no need of neighbor configuration. Just something like this:

router bgp 1
 address-family ipv4 vrf TEST2
 redistribute connected

Take a look at this link about inter vrf route leakage.
And regarding RD and RTs, here.

[johan oosterwaal]

i didn't had BGP after adding that everthing works!

Many thanks Mohammed!!