Bgp Front Door Vrf

Bgp has also been used in the core of large enterprise environments as a tool to enhance network scalability and support separate administrative control domains.

Bgp front door vrf.

Vrf domain called the front door vrf fvrf while the inner protected ip packet belongs to another domain called the inside vrf ivrf. Modify the tunnel interface to stitch the tunnel to the front door vrf. Vrf lite is also known as multi vrf. Interface gig0 ip vrf forwarding front door ip address x x x x y y y y then you can create a default route in that vrf used for establishing the tunnels.

Both r1 and r4 will learn about the tunnel destination address via underlying protocol i e. Ip route vrf front door 0 0 0 0 0 0 0 0 z z z z you have to tell the tunnel interface to use the new vrf for establishing the tunnel. However another way to use bgp in the enterprise is on a single router supporting networking virtualization with vrf lite. The crypto isakmp key command doesn t support vrfs.

Ospf in our case. In order to understand the use of front door vrfs let us use a simple topology as below where we will create a simple gre tunnel between r1 and r4. Crypto keyring dmvpn vrf dmvpn pre shared key address 0 0 0 0 0 0 0 0 key cisco when you are using a front door vrf you can t define the key using the old crypto isakmp key command. As you can see we did not move the tunnel11 interface from the global routing table to the routing table for vrf pipe.

This includes things such as the correct tunnel configuration routing configuration using bgp as the protocol of choice as well as nat toward an upstream provider and front door vrf s in order to implement a default route on both the hub and the spokes and last but not least a newer feature namely per tunnel qos using nhrp. Router ospf 100 vrf pipe router id 13 13 13 13 4. The outer encapsulated packet belongs to one vrf domain called the front door vrf fvrf while the inner protected ip packet belongs to another domain called the inside vrf ivrf. I just did your topology on a lab and had 0 issues.

The key must be defined in a keyring. All we did is stitch them together.