Fiber to switch not working

Factory
Sep 25, 2025

Cisco 3850 full fiber switch not working with 2960x fiber ports

I have a Cisco 3850 full fiber layer 3 switch that was configured and working connected to the SFP port of the 2960×

Factory
Apr 23, 2026

10gig fiber link between two swiches. one switch shows

10gig fiber link between two swiches. one switch shows connected, other switch shows no sfp/link So i have a 10gig connection

Factory
Nov 14, 2025

Fortswitch not working over fiber : r/fortinet

Fortswitch not working over fiber Fortigate with Fortiswitches on Fortilink. We had a switch get hit by lightning in Building A. We took

Factory
Jul 10, 2026

Switch to Switch Connection Trouble

Rule this out first before you think that the switch is not behaving normally. And another easy way to test it, you bring

Factory
Aug 28, 2025

Fiber not working with unmanaged switch : r/HomeNetworking

I recently installed fiber optic internet, but I''m encountering connectivity issues when connecting it to my system. My current setup

Factory
Mar 30, 2026

Lightfiber over Patchpanel connection seems to be working but

Does anyone have an idea why fiber optic connections in our company do not work when they go through an LC fiber patch panel?

Factory
Dec 10, 2025

The Ultimate Fiber Troubleshooting Bible for Beginners 2025

Solve fiber troubleshooting issues fast with step-by-step tips for beginners. Keep your fiber optic network reliable and

Factory
Jan 28, 2026

10 gb fiber patch panel not working, lets start with basic wiring

I had a contractor run some new fiber rated for 10 gb (nice shade of blue). I can''t get it to connect on the two trunk ports. I can get

Factory
May 28, 2026

No connectivity between switches over fiber : r/networking

Swap out and test the MDF switch with a different and known to be working HP switch and matching HP SFP Make sure ports are

Factory
May 14, 2026

Why is my fiber to Ethernet cabling not working?

My work (not on our equipment or network) has LX modules into Single Mode patch cables. Due to the fibre run (1km) going to a

Factory
Aug 10, 2025

networking

Basically I am having a problem with a fiber optic cable connecting 2 switches not working, hired a professional to help fix it and in

Factory
Aug 06, 2025

Fortswitch not working over fiber : r/fortinet

Also use a proper cleaning tool when cleaning fiber ends and optics. If the fiber is terminated at a panel, you could also try swapping

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