All I know is the MTU issue was bad enough where I changed to an FS Switch and dumped the Mikrotik. No more issues with MTU.

I have a CRS305-1G-4S-1N. I can get to RouterOS no problem after I do a cold reset @ 192.168.88.1. I have tried everything I could find or think of to get to the SwOS with no luck. I went to System/RouterBOARD/Settings and changed BootOS to SwOS after which I cannot get to the SwOS web page after a ...

2.12 has many issues on CRS309. Worse being ports randomly shutting down and switch freezing which is totally unacceptable. With 2.11 ports will sometimes shut down if a computer is rebooted, but never while running. And we all know about the RX/TX flow control issues in 2.12 which is what I suspect...

Please fix 2.12
Many people having issues.

So far so good with 2.11. No more freezes in the switch. Tried multiple restarts on systems.
2.12 has issues!

I started researching RSTP and my head practically exploded. I have a simple setup using SWoS. Using the CRS309-1G-8S+IN for SFP+ connectivity. I have the Ethernet port connected to an unmanaged switch which connects all my 1G devices and the firewall/router. I am not doing any bridging as I see it....

This morning I found the switch in a frozen state after computers were turn on and all the ports started turning on then off. I downgraded back to 2.11. First thing I noticed was the performance increased. Either there is something wrong with 2.12 or the switch itself. Time will be the test here. I ...

I already saw those reports and disabled flow control. This is a case where the STP+ port transceivers are disappearing and only a power cycle gets them back. Happens when a computer restarts but not every time. Very intermittent. Never seen it happen while running. Just restarts.

I have a CRS309-1G-8S+IN with SWoS v2.12. Sometimes when I restart a computer, the SPF+ link goes off and doesn't come back until I power cycle the switch. The Cisco transceiver disappears from the SPF list. Is there another way to restart the port other than a complete power cycle. Also, why is thi...

Since flow control has to be turned off, should I also disable it in the NIC? Is flow control that important? If so, I think I may also go back to 2.11.

I have one CRS-328-24P-4S and one CRS-309-1G=8S both using SwOS. The 328 is plugged into my firewall/router (OPNsense) along with many other devices and works fine. I purchased the 309 for expansion of SFP+ ports. If I plug the ETH port from the 309 into a 328 ETH port, devices plugged into the 309 ...

I have had issues where the switch would freeze and I would have to power cycle because some ports were using different MTU's. I find it is best to keep all ports using the same MTU, then there is never an issue. I don't think SwOS can do MTU fragmentation. Unfortunately there is always some device ...

Those SR modules and OM4 cables worked like a charm. Thanks for the tips.

I will post here how those SR modules and OM4 cables worked out.

And just for reference in case anyone else see this. The cable is a type LC connector

Thanks. That is definitely the cheapest way to go.
I will order some. I assume the SFP-10G-SR V03 is just a later release of V02 and not functionally different

So would that be a complete fiber cable with a 10GBASE-SR transceiver. Or is that different components? Is this the type of cable you are referring to? https://www.amazon.com/Belkin-F2CX036-10M-10GBASE-Passive-Twinaxial/dp/B008DWBGIW or http://www.robofiber.com/sfp-10g-10aoc or are you referring to ...

Newbie with SPF+ questions here. I need to have one SPF+ run on my new CRS328-24P-4S+RM device to go 10Meters. Should I purchase a passive or active cable? Other than cost, any up/downsides to either one? I read somewhere rule of thumb is active optical over 5M. Does this device handle active and pa...

I have the CRS305 and see in the docs that Jumbo Frames are supported but when I ping testing the JF, I get hangs and errors. The most I can ping is 1472 MTU.
Is this a setting somewhere. I am using SWos