
Now, campus network operators divide many virtual LANs, private VLANs (PVLANs), and even many Virtual Routing and Forwarding (VRF) instances throughout the campus. In the data center, the entire enterprise campus network is spread across various types of tenants handling different applications, such as IP-enabled HVAC units, telephony, video, and building control. In addition, different types of traffic need to correspond to different networks, such as office traffic and key service traffic, and each tenant can handle different applications to start dividing the network. There are no such technologies that support campus LANs, but they will definitely appear in the future. Ultimately, these strategies can also be deployed separately or as a whole.