Right now, the single PCIE slot is being utilized by a USB 3.x card for backups to external drive(s). It is one of the reasons I got it so I wouldn't have to purchase an additional NIC. If you are speaking about the NAS, it has 10GbaseT (two of 'em!) built-in to the mobo. I can't use DAC from my main machine-it's too far away from the switch, roughly 10-12 meters. I can see what wattage the switch is drawing by noting the UPS display, at least roughly.
Perhaps it is just pulling too much power? I could try a different one, since I have an extra for testing purposes. The 10GbaseT transceiver is too hot to hold if you remove it. I must have run across something like what you said because I purchased a EU to US ac adapter and switched it from PoE to the provided EU power mini-brick. Each 10Gbase-T transceiver can draw anywhere between 2 and 3 watts alone, not leaving much headroom for the switch itself.Ĭlick to expand.Interesting. The included power brick is a 24v 800mA adapter, which gives us about 19 watts. The CRS305 only has about 15 watts of power to work with, while testing we saw it drawing about 12 watts of power over POE. The fact remains, 10Gbase-T simply put uses more power than a SFP-10G-SR laser or a DAC. During my testing, I tried powering it via the included power brick and also via POE. The only assumption I can make about this problem is that it is a power budget limitation. In the end, I resigned to using two DAC cables and two 10G BaseT transceivers, and it has been stable ever since. I even tried another NIC on the server that was plugged into it. What was strange was that the switch saw the modules in the SFP tab just fine.īut what was happening was no matter what I did the Link Status would stay off on the Link tab, and I would not get any lights. The problem was that the same port that would not work each time I tried to use it. At first, I thought one of the adapters was bad, then I thought maybe one of the SFP+ cages was damaged in some way. It seemed to work reliably with only 3 of our 4 adapters. Thoughts? Is there anything else I can try based on the setup I currently have?Īdditionally, we had some weird quirks when using 10Gbase-T transceivers on the CRS305. A replacement net card (a new X520) is probably about 25% of the price of that though. Which component should I spend money on first to swap to see? I wouldn't mind getting a Ubiquiti USW-Pro-24 with two SFP+ ports since I have a UDM already anyway and managing everything in one spot is very nice. "Compatible" to me would seem to mean that they either work or they don't, not this kind of intermittent failure.Īnyway, what are the odds that it is the eBay X520-DA1 pulled from a server is wonky vs.
So, my first tack is to see if the 10Gtek transceiver modules are compatible with the Intel X520 NIC, but then I would have to also believe that the Ipoplex ones are also not working.
In browsing the MIkrotik forums, I found an article about "severe port flapping" ( Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+ - MikroTik) which is different models of hardware but perhaps the same software and components at the heart of it. There is nothing in /var/log/syslog about a connection drop and reconnect happening.Īs an aside, iperf3 using a window size of 1MB gives me 10Gbit performance between my machine and the NAS through the CRS305 as expected and 4+ Gbit by default (jumbo frames specified on both ends). As far as I can tell, the NAS box running Unraid is not suffering from this. Ports were swapped around on the Mikrotik with no change in behavior. I tried it with copper using the Ipoplex devices and it still happened with that setup as well.
The drivers were just updated today and it is still happening. I have been getting intermittent link drops and reconnects, sometimes as often as every two-three minutes and sometimes not for hours. and two 10Gtek SFP+ AXS85-192-M3 transceivers. My main computer (win10/pro) has an Intel X520-1 and connected via the usual fiber, 15m of LC-LC, OM3.
The NAS is connected from its RJ45 via Cat7 to an Ipoplex SFP+ transceiver on the switch. I recently upgraded (April) my network to utilize 10Gb from a new NAS based on a Supermicro X10SDV-4C+-TLN4F and a new Mikrotik CRS305-1G-4S+.