Though it doesn’t seem to be a Paricle issue as such, but since you guys (e.g. @bko) are my last hope for help, I do post here
I’ve been searching the web for the last month or so for a solution but could not find one.
The general useless answer is: "It should work, but if it doesn’t, it’s your hardware!"
I’ve got a C# program running on my Windows PC which multicasts in 1sec intervalls some data via UDP, which should be received by multiple Cores (once UDP works Photons) and the Particle devices should send infrequently some data back to the same multicast group.
This works quite reliably when all the devices are behind the same router and connected via WiFi. But I want to have my PC wired to the router, but I just can’t get it to work.
That’s my main problem.
Once this is solved, I’d neet to solve a similar secondary problem.
The multicast (from PC) does not make it through any switches/hubs, despite all being on the same subnet and the packets don’t hop any routers despite having set TTL to 8 hops.
My routers/switches are a Cisco EPC3925 (root, WiFi, DHCP server), a Netgear WPN824v2 (setup as switch and WiFi AP), a Netgear DGN2200v3 (as switch and WiFi AP) and a Allied Telesyn AT-FS708LE (wired switch).
Additionally, is there a way to set the TTL for UDP multicast packets on the Particle devices?