I was recently investigating a network issue in my home when I noticed my switch was indicating there was crosstalk on a port. As it turns out the initial issue was a bad network cable on a different port and the crosstalk was unrelated but I'm now bothered by this issue.
Anyway it turns out the crosstalk was coming from the Hubitat Elevation's port on the switch. It goes away when I unplug the HE. It doesn't come back when I attach another device. It does return if I plug the HE back up. If I plug the HE on a different port the crosstalk follows the Hubitat. I've also tried various network cables in my tests... The crosstalk is following the HE.
To be clear so far I've been happy with Hubitat but this just bothers me. My attempts to email them directly have gone unanswered. Anyone else with seen anything like this or have any thoughts?
Wow. I just have a lonely netgear switch with no real features. I read up on that a bit after you mentioned it. Very interesting stuff. If I understand it correctly, sounds like it might be caused by the hub itself. I'm sure you'll get a response on this at some point, but I'll definitely be following this thread. Always eager to learn.
I get reports of CRC errors from my switch on any port i connect the hub to. Only when the hub is connected... The question is are these issues because of a bug in the network stack/Ethernet driver, or is this part of that potential QC issue I suspect exists.
I am using a Netgear GSS116E which is not a full-blown managed switch, but it does have some managed capabilities and that includes a cable tester which is where I'm getting the report. I bought a pair of them originally so I could bridge two connections and have 2gbit between my home theater (which is actually where I kept a NAS and wifi hotspot) and my wiring closet (where all my other wired connections in the house went).
I moved a year ago and I'm not currently using that capability but I appreciate the cable tester. Last time I had an issue like this I remade the cable (which didn't help) then j bought a new Ethernet jack and tried that on one end of the cable.
I can't easily replace the Ethernet jack built into the HE.
To be fair to Hubitat, no... functionally everything I've tried appears to work.
Can anyone confirm what speed the port on the Hubitat Elevation (specifically a C-5) should be negotiating? If it's supposed to be ”gigabit" mine is only able to do 100mbit depite using cat5e And gigabit switch (and many of my devices can sync at gigabit).
I had always just assumed it was only 100mbit capable but if it is a "gigabit device" that requires signals on all 4 pairs of wires while 100mbit only needs 2. So a crosstalk problem on a gigabit device could cause it not use a pair of wires which would force it to negotiate the lower speed.
To be clear I'd be surprised if the cpu could push data much faster than 100mbit I'm not honestly thinking I need to the device to go faster than it does... I just want it to be "right" whatever that means.
