There are other benefits of this design and it s quite commonly used in the sp enterprise world.
Front door vrf.
The concept is called fvrf ipsec or in english front door vrf ipsec.
Modify the tunnel interface to stitch the tunnel to the front door vrf.
Under the geographic separation scenario eompls would normally be used to link the two ip networks.
Crypto map based with ivrf cust1 vrf and fvrf internet vrf.
All we did is stitch them together.
Create front door vrf named fvrf on r1 and r4.
As you can see we did not move the tunnel11 interface from the global routing table to the routing table for vrf pipe.
Front door vrf or outside vrf the vrf that contain the encrypted traffic.
This step is only required when configuring a front door vrf fvrf.
Note front door vrf fvrf is only supported as of cisco ios release 12 2 33 sxh and later.
Router config if tunnel destination ip address.
Optional associates a vpn routing and forwarding instance vrf with a specific tunnel destination interface or subinterface.
If you don t use a keyring you won t be able to apply the key to the isakmp profile so the ipsec configuration won t have access to a.
The ivrf of these tunnels can be different and.
The key must be defined in a keyring.
If no vrf aware config is used everything is done in the global vrf and all interfaces are in the global vrf.
Router ospf 100 vrf pipe router id 13 13 13 13 4.
Configuring physical interface on r1 and r4 to be vrf aware.
When you are using a front door vrf you can t define the key using the old crypto isakmp key command.
Figure 1 0 shows a typical scenario below this scenario is common amongst service providers and geographic separation is normally sold as part of the solution.
Sets the destination address of a tunnel.
Vrf name name assigned to the vrf.
R1 sh runn int fa0 0.
By using front door vrf we are isolating transport network usually internet facing and this allows us to configure default route that won t interfere with routing in our global table.
One or more ipsec tunnels can terminate on a single interface.