topic Re: Route VRF in Routing and SD-WAN

Route VRF

Arvind kumar — Thu, 22 Jun 2023 07:38:01 GMT

I 've a router configured with multiple VRF's, I want to look for a particular subnet is lying on which VRF on the router, Is there any command to look for a particular

subnet /Prefix

onto a particular VRF on the router.

Re: Route VRF

MHM Cisco World — Tue, 20 Jun 2023 10:51:12 GMT

thanks
MHM

Re: Route VRF

Flavio Miranda — Fri, 14 Jul 2023 11:15:36 GMT

The commands may vary depending on the platform. But you can check on the SVI directly or interface L3 and see which vrf is assigned to it

You can also check on the VRF routing table with the command

show ip route vrf

<vrf name> | incluse <subnet you are looking for>

If you have many VRF use this command instead

show ip route vrf *

| in <subnet you are looking for>

show ip route vrf

Re: Route VRF

M02@rt37 — Fri, 14 Jul 2023 11:17:13 GMT

Hello @Arvind kumar,

With MPLS/L3VPN we can see for a subnet the vrf(s) attached to it:

#sh bgp vpnv4 unicast all A.B.C.D

But with tradionnal vrf confguration on a router you can not see for a particular subnet on which VRF is lying. You need to know the vrf name and check the routing table attached to this vrf!

Re: Route VRF

Dan Frey — Wed, 31 May 2023 13:48:52 GMT

It is possible the same subnet is in one or more VRFs.

Re: Route VRF

Harold Ritter — Fri, 14 Jul 2023 11:16:33 GMT

Hi @Flavio Miranda ,

If you want to see the VRF name, you would need to add the following to your suggested command:

show ip route vrf *

| in <subnet you are looking for>|Routing Table:

Regards,

Re: Route VRF

Flavio Miranda — Wed, 31 May 2023 14:10:59 GMT

@Harold Ritter Thank you very much.

Re: Route VRF

MHM Cisco World — Tue, 20 Jun 2023 10:50:54 GMT

that same in my mind that why I suggest to him use the interface number not depend on routing table.
BUT he select easy answer, may be he dont use same subnet in multi VRF.