What can be cited to justify the unsuitability of the TP-LINK SOHO router for telemetry in hazardous chemical production?

Question

network hardware

What can be cited to justify the unsuitability of a TP-LINK SOHO router for telemetry in a hazardous chemical industry in the sense that such a device is prone to freezes?

Answer 1

Imkho - on the scheme of fault tolerance of the given decision, in comparison with a tsiska that at once. Objectively, the architecture of a GOOD device is separate microcircuits for separate tasks, which simply increases reliability by a couple of orders of magnitude. And subjectively - out of 10-15 routers that I tested (I am engaged in openwrt) "stupidly hang randomly" 90%. Of all that tested, one tp-link works fine with xiaomi (everything else just hangs stupidly at a random moment with the same software everywhere). By the way, half-way solutions like orange pi have now appeared - they work better with respect to soho, they are about the same price, but Linux is full-fledged.

Answer 2

If this is telemetry, then you need to understand what its absence is fraught with.
Answer the question: what happens if it freezes? What are the consequences and how urgently do you need to restore performance (seconds / minutes / hours)? And of course, what is the budget?
If you need 24x7x365 availability, then you need to choose something with redundant components, regardless of vendor (at least bp or stackable devices in general). But at the same time, do not forget about redundancy "from outside" (how to deal with an uninterrupted supply of electricity, for example).
You can make someone else's "knee" solution in the form of a microcontroller that will ping the piece of iron and pull the relay for automatic reboot.

Answer 3

As part of industrial equipment, there is a WatchDog (watchdog timer) that reboots the equipment in case of a freeze.
In your case, it seems to me that it is enough to restart the router when transferring a shift.

Answer 4

Take two routers and hang vrrp between them. Do not drive office traffic through critical routers. Pick up monitoring. If tp-link can do this (with native or wrt firmware) - set it all up and calm down.