In much the same way that server virtualization programmatically creates, snapshots, deletes and restores software-based virtual machines (VMs), NSX-T network virtualization programmatically creates, deletes, and restores software-based virtual networks.
With network virtualization, the functional equivalent of a network hypervisor reproduces the complete set of Layer 2 through Layer 7 networking services (for example, switching, routing, access control, firewalling, QoS) in software. As a result, these services can be programmatically assembled in any arbitrary combination, to produce unique, isolated virtual networks in a matter of seconds.
- Every node hosts a management plane agent.
- The NSX Manager node hosts API services. Each NSX-T installation supports a single NSX Manager node and does not support an NSX Manager cluster.
- NSX Controller nodes host the central control plane cluster daemons.
- NSX Manager and NSX Controller nodes may be co-hosted on the same physical server.
- Transport nodes host local control plane daemons and forwarding engines.