I currently have a CRS305-1G-4S+IN switch which I am using for iSCSI in my home lab. I currently have it set up in RouterOS mode because this is the only mode where I can configure MTU. My ISCSI performance is sub-par at times and I am just trying to diagnose what might be causing it. I have heard the performance might be slightly better in SwOS mode due to it being lighter.
My question is, does SwOS mode automatically accept jumbo frames? For example, I have my ESXi hosts configured with the MTU of 9000 when connected to the switch. After making this change, I did receive a slight increase in performance when it was set up with RouterOS. Or does SwOS not accept jumbo frames at all and I am stuck with RouterOS if I need to use Jumbo Frames?