vSphere Distributed Switch
A vSphere Distributed Switch acts as a single virtual switch across all associated hosts. This allows virtual machines to maintain consistent network configuration as they migrate across hosts.
Like a virtual switch, a distributed virtual switch is a network hub for virtual machines. A vSphere Distributed Switch can route traffic internally between virtual machines or link to an external network.
A vSphere Distributed Switch can have multiple distributed port groups assigned to it.
vSphere Distributed Switch Architecture
Networking with vSphere Distributed Switches is driven from the datacenter level. A vSphere Distributed Switch exists as an object on the datacenter that acts as a virtual switch across all associated hosts, enabling virtual machines to keep consistent network configuration as they migrate across hosts.
Uplinks connect the vSphere Distributed Switch to physical network adapters on associated hosts. Each host can connect one physical network adapter to a vSphere Distributed Switch for each uplink port on the vSphere Distributed Switch.
Virtual machine NICs connect to vSphere Distributed Switches through Distributed Port Groups, which aggregate multiple ports under a common configuration and provide a stable anchor point for virtual machines connecting to a labeled network.
Distributed Port Group:
A distributed port group is a port group associated with a vSphere Distributed Switch and specifies port configuration options for each member port. Distributed port groups define how a connection is made through the vSphere Distributed Switch to the network. .