Cisco 350-401: VRF Design in Enterprise Networks

A Virtual Routing and Forwarding instance creates a separate routing context on the same physical or virtual router. Instead of every interface and prefix sharing one global table, interfaces can belong to different VRFs with independent routes and overlapping address space.

That isolation is useful for tenants, management networks, mergers, shared infrastructure, lab environments, or any design where routing separation is more appropriate than a single table with many ACLs. For enterprise network design, VRFs should be treated as routing boundaries with explicit crossing points.