RB260GS and LC to SC Duplex Single mode Fiber cables

RouterOS General
1

Hi I recently install two RB260GS switches with the S-85DLc05D and connected them with a LC to LC patch cable

and everything works fine.
The SFP light turns on both switches and I’m able to connect.

Now, I purchase 2 x LC to SC Duplex Single mode Fiber cables

In order to test the yellow patch cables I got two Single mode fiber couplers

and connected the yellow cables.

Now I only get the SFP light on ONE of the switches and I’m not able to connect. I tried connecting them in all possible ways, but I only get one light
If I swap the transceivers the SFP light turns ON on the other switch

Any ideas?
Fiber.JPG

2

most probably your patch cable was a multimode cable. now you are using multimode SFPs with a single mode cable(the yellow one) this will not work.

3

Thanks you for your help. That was the problem I should have purchase the multimode patch cable