Virtual Routing and Forwarding (VRF) is a technology that controls information flow within a network, isolating the traffic by partitioning the network into different logical VRF domains.
All management services on the Extreme device are VRF aware. The management services can select a particular VRF to reach a remote server based on a VRF. The VRFs are management (mgmt-vrf), default (default-vrf), and user defined VRF (user-vrf).
By default, the device creates a VRF for management named mgmt-vrf and, all manageability services are accessible through this VRF. Multiple instances of IP services can be instantiated in multiple VRFs. For example, SSH can be in more than one VRF. IP services can have up to five VRF instances.