A variety technologies exist to allow multiple scopes, or routing instances, within a single router. Virtual Routing and Forwarding (VRF) is a technology that controls information flow within a network by partitioning the network and separating Layer 3 traffic into different logical VRF domains. For each VRF domain, the router maintains a separate routing table and Layer 3 forwarding tables and can run separate instances of routing protocols.

VRF allows you to logical split the router into multiple L3 routers that allows for overlapping address spaces without contention. The vhost interfaces are supported as part of VRF. For information on VRF, refer to .