Capturing multiple Exegin boxes on one host

I think I have a unique problem. I would like to have multiple Exegin boxes sniffing RF traffic with static IPs (connected to 3G/4G modems) being captured simultaneously on multiple instances of Wireshark on a host Unix machine. I setup the host to have a VLAN for each instance of Wireshark to capture each Exegin's traffic. (If there's a more elegant way to do this, please tell me!)

So far, I've learned that I need to SSH to remotely capture traffic. But since the Exegin isn't a computer where I can setup tshark or SSH, how do I make this work?