Thursday, April 16, 2020

Broken Multicast or Service Discovery Issue

Hi Guys,

I'm hoping you can shed some light on an issue that I'm trying to get closure on. I design and install custom home & business automation systems. RTI is my choice product, it interfaces with various TouchPads, handheld remotes, and of course an app.

A command processor is central to all of the devices in the system. This works great with only certain routers. We normally use Ubiquiti and Luxul products, and it's smooth sailing, so we mostly stick to this every chance we get. But sometimes in corporate environments they don't want our equipment on their network for security. In this case, we just need a basic router to handle a few devices.

I believe rti hardware & the app rely on a broadcast from the command processor in order to "locate" & communicate. Wireshark shows very regular broadcasts every second or two from the processor. This will work for a few hours between 2 - 12 hrs without issue. Then it just disconnects and the only fix is to reboot the processor and the cycle repeats, some random period later, it's lost again. This happens for sure on netgear, linksys, and of course the crap the cable company hands out.

RTI has some pretty smart people on its team, they only use Luxul and that's as much info they can give on the subject of networking unfortunately.

Bottom line, I'm curious what the deal is with this! It bothers me that the reason has not surfaced over the 8 years of working with this line of products. Can Broadcast & Multicast break or some service discovery be ignored on certain routers?

Your help is greatly appreciated, I've been thinking about asking the real experts here for quite some time. I know you'll have something good on this topic!



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