VRFs are to Layer 3 as VLANs are to Layer 2 and delimit the domain of an IP network within a router. The Cisco website has a more formal definition: VRF–A VPN Routing/Forwarding instance. A VRF ...
Editor's Note: To view a PDF version of this article, Click Here. Multiprotocol label-switching (MPLS) technology is about to take off. As the most widely used MPLS routers, label edge routers (LERs) ...