Raw data over TCP?

Question

Iron

Good afternoon. Give me a direction, please.
There is a device that generates a sequence (raw data or its own protocol) to control the LED matrix, and outputs it to the Ethernet port. Traffic analysis shows frames of the same length, but Ethetnet does not smell like a protocol here. It's not linsn, it's not artnet, it's something else.
The task is to transmit this information over a long distance (optics). The only problem is that there are a lot of ports (devices) (8-10). Media converters are not very convenient, I would like to get by with only one fiber optic cable.
Are there any devices capable of receiving a "packet", packing it in TCP, sending it, and unpacking it on the receiving side and giving out what came to the receiver. In the middle, between them, put a switch and Vlan will do its job.
You need something similar to HDMI over TCP , but as information there will be packets on the Ethetnet port of the device.
Transmission speeds are large ~ 600Mbit / s Tell me the
direction where to dig.
PS. Breaking the protocol is not a task, the only task is a convenient "connection" and location of the signal source and signal receiver

Answer 1

MPLS?

Answer 2

if the data is already packed in tcp can you just forward the packets using iptables ??
you can, of course, put it in vlan and make it even more difficult, but why, if this is a simple data packet,
you can tell addresses, ports, who sends where and on what network (local Internet) it is going to lengthen

Answer 3

EtherCAT possible