single mode fiber - no link

[nflnetwork29]

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

https://www.fs.com/products/39371.html

Patch cable is 1m (3ft) LC UPC to LC UPC Duplex OS2 Single Mode PVC (OFNR) 2.0mm Fiber Optic Patch Cable

https://www.fs.com/products/40191.html

[Slobs2]

Confirm the port is not disabled. Also see if on the port status (right below where you configure the port on the switch page) sees the transceiver. 

[GreenMan]

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).

[Brash]

Verify that the fibers in the pair are the correct way around. Try crossing them on one of the cables and see if the link comes up.

[Inderdeep]

@nflnetwork29 : Most of the time the issue is with the connecting TX/RX on both side. Check it is connected correctly on both end.

[GIdenJoe · Accepted solution]

Yeah I always enjoy fiddling those LC connectors out of their holder to switch em around 😉

[Inderdeep]

I saw most of the time issue related to that... 🙂 

[nflnetwork29]

this did the trick. much appreciated everyone who provided feedback!

[GIdenJoe]

And what is the switch and SFP on the other side of the fiber link?