Delay is notable before users connect
Delay is notable before users connect
Hi everyone - I recently installed an Ubiquiti Switch with eight 10G SFP+ ports. My Windows clients connected via SFP+ to RJ45 adapters are experiencing delays, taking 1-2 minutes to start receiving traffic. I’m using all ports except three, which are linked to 20G, a router, a PoE switch, and a NAS. The adapters are from fs.com, while the Windows NICs are from ASUS and TP-Link, sharing an Aquantia chip. We use CAT6A cables between the switch and devices. Once connected (usually 1-2 minutes), they reach full speeds. I’m wondering if adjusting certain settings could help. Setting static IPs might be a good idea?
Hi sorry for my delayed reply. The device version of the switch is 6.5.59. I have the speed hard sent on both the port and the client. I do not believe the port is getting blocked by STP. I was not having a problem with throughput (the 10Gb), the problem happens when waking the computer from sleep or from shutdown. The computer shows that there is NO "internet" or local connection for at least 1-2 minutes. Ubiquiti WiFi 6 does not have this problem on my computer. As soon as I turn it on I am connected. Very strange.
I’d consider pointing the blame at the NICs, as there are some unusual issues with certain Aquantia chipsets. The problem gets worse on Windows in heavy loads, sometimes causing the whole network stack to crash and requiring a reboot. On Linux, kernel logs indicate it resumes from sleep unexpectedly. On Linux systems, the driver appears to resolve the issue swiftly; Windows might handle it too but slower. I’d suggest changing the device in Device Manager to prevent the card from putting itself to sleep, which could help. If this occurs during a clean boot, it might not matter, but disabling fast boot could be worth trying.
I think the problem might be with the cards. My Asus 10 GB NIC had similar issues before. It would also lose connection suddenly during big transfers (like moving multiple TBs). After switching to Intel, everything works fine. They cost a lot, but you get value for the price. If you can run wires, I’ve found that SFP DAC or pre-terminated SFP+ fiber cables perform better and use less power than SFP+ to RJ45 adapters.
It seems the AQC107 is causing issues in Windows 11 after a certain point. I haven’t run into problems with USB Aquantia or Realtek chips. From the forum, newer AQC11x models appear stable, but sticking with Intel seems safer if you get drivers for Windows 11. Some Intel products only support Windows Server and certain older 2.5Gbit models that still have problems. Choosing a NIC used to be more complicated lately.