VRFs

VRF, or Virtual Routing and Forwarding, is a technology that allows a single physical router to run multiple independent routing tables at the same time. Each VRF acts like a completely separate virtual router, meaning traffic in one VRF is fully isolated from traffic in another, even if they share the same physical hardware. This is commonly used by service providers to keep customer traffic separate on shared infrastructure, and by enterprises to isolate different departments or network segments on the same device.