Virtual Routing and Forwarding (VRF). In IP-based computer
networks, VRF is a technology that allows multiple instances of
a routing table to co-exist within the same router at the same time. One
or more logical or physical interfaces may have a VRF and these
VRFs do not share routes; therefore, the packets are only forwarded
between interfaces on the same VRF. VRFs are the TCP/IP layer 3
equivalent of a VLAN. Because the routing instances are independent,
the same or overlapping IP addresses can be used without conflicting
with each other.