3.3.f Implement and troubleshoot VRF lite

VPN Routing and Forwarding (VRF) instances, are most commonly associated with MPLS. In service provider networks, MPLS encapsulation is used to isolate individual customer traffic and an independent routing table (VRF) is maintained for each customer . Most often, MP-BGP is employed to facilitate complex redistribution schemes to import and export routes to and from VRFs to provide Internet connectivity.

However, VRF configuration isn’t at all dependent on MPLS (the two components just work well together). In Cisco terminology, deployment of VRFs without MPLS is known as VRF lite.

Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 2692-2696).  . Kindle Edition.

http://packetlife.net/blog/2009/apr/30/intro-vrf-lite/