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New Member
Posts: 3
Registered: ‎01-18-2017

unifi switch SFP link speed

I have a US-16-150W that I am having issues with. Current firmware is 3.9.21.8191, controller is local and 5.7.20. I am trying to connect the SFP port with the UF-MM-1G module to some legacy equipment that is not managed and is 10/100Mbps. I have LC to ST 62.5/125 1ft fiber patch cable connected. I get light shooting through the patch cable, I get Link/Activity light blinking on the legacy equipment. In the controller I get an RX fault status on the SFP port. I have tried all the manual config I can with overrides or the custom profiles. I feel like the issue is the unifi is not actually setting to 10 or 100 speed and its stuck in 1000. Also i tried manually upgrading to 3.9.27.8537 but i get an error. I have connected to other gigabit equipment and it seems to work. I also ran a patch cable from SFP1 to SFP2 and I got green lights on the ports. Any ideas

Ubiquiti Employee
Posts: 532
Registered: ‎02-13-2018
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Solutions: 80

Re: unifi switch SFP link speed

The SFP ports on the switches are 1000 only and will not do 10/100. Your best bet is using the ethernet (RJ45) ports if your cable length allows you to do so without exceeding spec.
Adam Dipple | UniFi Support Team
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Registered: ‎01-02-2018
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Re: unifi switch SFP link speed

@UBNT-AdamD while not my thread,  follow up question.

 

on the 10g devices, can you connect the 10g SFP to a 1gig sfp?

 

just not a 1g sfp to a 10/100

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Ubiquiti Employee
Posts: 532
Registered: ‎02-13-2018
Kudos: 175
Solutions: 80

Re: unifi switch SFP link speed

@Alex- Yes, it will fine if you manually set the speed to 1G.
Adam Dipple | UniFi Support Team
New Member
Posts: 3
Registered: ‎01-18-2017

Re: unifi switch SFP link speed

[ Edited ]

@UBNT-AdamD

 

Cable length does not allow. So the ethernet ports can be configured to 10-1000, but SFP can only be configured to 1000 correct? Is there an Ubiquiti product that does have SFP or SFP+ that can be configured to 100Mbps?

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