Simple definition
A vMotion network carries migration traffic when VMware transfers a running virtual machine between hosts.
Purpose and use
The vMotion network carries communication required for live migration between compatible hosts.
How does it work?
VMkernel interfaces and network policies must provide the required path between participating hosts.
Example and verification
Check connectivity, consistent MTU, capacity and intended isolation before testing migration under load.
Points to watch
A reachable management network does not prove that the vMotion path works. CPU and storage compatibility also matter.
In short
Networking is one prerequisite for vMotion rather than the only migration requirement.