Ubuntu server 18.04 network interface limits?

Question

linux

Does Ubuntu server 18.04.4 have limits on the number of network interfaces?
Faced limitations of 40 ethernet network interfaces. Doesn't want to raise it anymore. This is despite the fact that the name of the interfaces led to the form eth0, eth1, etc. With the default name (ensp), in general, more than 10 does not allow to start.
Prompt, please, who faced. How to remove restrictions and get more than 40 network interfaces?

Answer 1

Restrictions, if any, are somewhere in the drivers of a particular device. Would you tell us what you do, on what devices and how?

Answer 2

Maybe the pci-e lines are not enough on the motherboard.

Answer 3

I have more than 130 vlans on SlackWare and this does not cause any problems with interface names like eth0, eth1, eth2.1 ... eth2.128 ... eth2.777
Plus, the coexistence of the v4 and ipv6 stack.
But I encountered a similar problem on Huawei iron routers - depending on the model, they can have, for example, a maximum of 1, 2 or 60 wealan interfaces (hardwired in the firmware), and the amount I need is available only on higher-class hardware and prices, in fact because of which the router moved from a piece of iron to Linux. Perhaps in your case everything can be solved in the kernel settings via /proc/ and sysctl

Answer 4

Sorry for the long answer. And thanks to everyone for the quick response.
Yes, provided little information.
I was going to connect 50 USB devices. It looks like it's limited by USB. Motherboard: msi z270-a pro
Ubuntu Server sees two buses. For each no more than 20 devices, it turns out like this.

As far as I could google, they treat it by turning off USB 3.0. But it looks like it won't work on my motherboard.