Are you in charge of connectivity for numerous small sites spread throughout a geographic area? And you need to provide a transport for the traffic generated by the video surveillance on the remote sites? The security policy dictates that IP traffic from the video cameras is separated from the other traffic on the path to the video gateway in the data center. So, definitely, a VPN for this traffic is needed. MPLS VPN comes to mind. But Cisco offers a simpler way – a simple VPN can be implemented with Multi-VRF functionality available in all Cisco routers. 

In this IP Corner article, Ivan Pepelnjak, the Chief Technology Officer (CTO) at NIL Data Communications explains the implications of building VPNs with Multi-VRF feature. The article also provides guidelines that will help you decide when to use Multi-VRF and when to deploy full-blown MPLS VPN network.