Configuring Flow Exports on Arista devices
For NetFlow analysis, you need to configure your devices to export flows to Site24x7 On-Premise Poller, which is the NetFlow collector. The On-Premise Poller will be listening to the particular port to receive flows. Learn how to find the port number of your On-Premise Poller.
Here's Arista's official documentation on configuring sFlow exports on Arista devices.