CEF and VRF
Posted on April 17, 2010
A think you may want to know and that I discovered when playing on a device is that VRF needs CEF (ok that’s not new) and actually it won’t let you do it.
R1(config-if)#ip vrf forwarding MyVRF % Enable CEF globally before configuring VRF on any interface
The tricky thing is that if you create a VRF without CEF on older version of IOS you don’t get this and when you enable CEF AFTER having configured the VRF it won’t work. You’ll have to reboot the router for the routing to work in the VRF.