NVGRE (Network Virtualization using Generic Routing Encapsulation) is a network protocol that uses Generic Routing Encapsulation (GRE) to tunnel layer 2 packets over layer 3 networks.
NVGRE (Network Virtualization using Generic Routing Encapsulation) is a network protocol that attempts to ameliorate the scaling problems assocated with large cloud computing deployments. It uses Generic Routing Encapsulation (GRE) to tunnel layer 2 packets over layer 3 networks.