hello i am trying connect 1 single mode fiber to the Meraki port 25 using 1GB SFP transceiver single mode. LC connector . I cannot get any link light on the Meraki switch. We have tested the line to patch panel and all seems ok . is there any trick on meraki side to get this going ? there is a lack of any commands to assist with any transceiver troubleshooting that i am aware of? Switch is MS120-24P
Transceiver is Cisco Meraki MA-SFP-1GB-LX10 Compatible 1000BASE-LX/LH SFP 1310nm 10km DOM Duplex LC MMF/SMF Transceiver Module
Patch cable is 1m (3ft) LC UPC to LC UPC Duplex OS2 Single Mode PVC (OFNR) 2.0mm Fiber Optic Patch Cable
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I assume so, but probably worth checking: when you say one fiber, you really mean one pair of fibres (send and receive)? Given you have structured fiber cabling, I'd also check that you have them patched properly: send to receive (try reversing the connnectors at one end).
@nflnetwork29 : Most of the time the issue is with the connecting TX/RX on both side. Check it is connected correctly on both end.
Hey guys, I'm having the same issue here. Inverted the polarity of the fiber and it linked for a few seconds, was able to see the switch in Meraki dashboard but then it suddenly dropped off. Have tried other ports and swapping it around again to no avail, unable to get it to link up again.
We've run a cable test on the fiber link and it's OK but no matter what SFP port or transceiver we use it won't link. I have tested the same SFP ports using RJ45 transceivers and they work fine.
Any ideas? I did notice some RSTP events in the event log in between the time the link first came up and before it dropped off.
How can I verify if that was the case? The SFP+ port on the primary switch still shows as enabled:
I've also tried multiple SFP ports on the secondary switch to no avail.
The primary switch is set as bridge priority 4096 in switch settings. All other switches would have default bridge priority.