First time setup of MikroTik CRS305-1G-4S+IN. Out of the box, SFP+ plugged in, link lights were showing on SFP’s (10G ethernet side of plugins) and router equipment; but no lights (blue switch lights) for switch activity. Previously these connections went through a generic switch, WAN side between ISP and Routers; so everything was configured and working prior to introduction.
WinBox found it at 192.168.88.1, perfect; logged in with sticker admin password, perfect; Set new password and on POE ethernet port running to internal network, set new IP, so far perfect. (during initial boot, accepted the default script thinking it would just setup a switch scenario, maybe that is where I went wrong, should I have deleted or canceled generic setup?)
I setup a new bridge and isolated SFP connections on my new WAN bridge. No change, devices can’t ping ISP, or each other and no switch lights still on SFP ports.
Someone then suggested, don’t mess with RouterOS; just reconfigure it for basic switch using SwitchOS. So went back to WinBox, changed the System to SwitchOS and rebooted.
Now No Change in switch indicator lights , no connectivity in routers to ISP , and WORSE the switch has completely disappeared. No 192.168.88.1; no show on WinBox → Neighbors; so I went from bad to worse.
Yep, i.e. if the PC has an IP in the same range of the switch.
I stand corrected, see below post, so it means “as long as the switch has an IP aasigned”?
After reading some of the responses, (Thank-you) I went back to it. This time WinBox showed TWO connections to it. (strange) 3.104 was the IP I assigned to the RouterOS. 3.14 was a DHCP address it found on it’s own. Can it be running BOTH RouterOS and SwitchOS at the same time?
So then I logged on to SwitchOS (3.14) found the password was blank, so corrected that. Then checked updates and upgraded to v2.17 SwitchOS. After requesting reboot, oh darn, was going to try to connect with WinBox as RouterOS… After the upgrade, the RouterOS was no longer a neighbor.
It upgraded, I logged in, it shows “no link” on each of the SFP devices, BUT I can also see, it is talking to each of the SFP devices; although they are not fiber, but RJ45 connections.
On your first screenshot:
Why it shows 2 IP addresses, probably a left over from some ARP cache or so ?
On your 4th screenshot:
You say these are ethernet SFPs (SFP-10G-T) but they are being recognized as 850nm multi-mode fiber connections ?
Maybe you need to remove autonegotiation and set them manually ?
Just curious: why not use ROS ? You will get a ton more features. Do these modules work via ROS ?
Bingo, that turned out to be the cat’s meow. It was not negotiating with the SFP modules, as soon as I TOLD them how to connect, it connected.
Well, that is what I tried first; but when it wouldn’t connect to anything I said, lets go simple - so switched to SOS to back to basics. I am back to ROS now, and the connections are working. Thanks!
