Generate NetFlow through SPAN connected interface

Hi there,

I need some NetFlow visibility in a site withou NetFlow capable equipment. My thought is that since the equipment can be configured with a SPAN/Monitor port, all I’d need is to deploy VyOS, where one port would be hooked up to the SPAN/Monitor configured port, configure NetFlow and presto.

The issue I am havig is with the configuration of the interface in VyOS that is hooked up to the SPAN/Monitor port. Currently it is set as default DHCP and I am wondering what type of configuration I’d need in order to get this to work.

Any help with this would be greatly appreciated.