MS120-24P - The link is dropping from 1Gfdx to 10fdx every night

[HungPhan]

Hello everyone,

Currently, i have a POS machine was connected to port 10 on MS120-24P swith. It usually changes from port: 10, old: 1Gfdx, new: down to port: 10, old: down, new: 10fdx every night.

This port was configured at Auto-negotiate mode. 

I supposed that the time from 22:00 to 8:00 data usage reduced that why this port kept on 10 Mbps during this time.

Then it goes back to 1Gbs afterthat.

Can you advise me something on this?

Thank you,

[Brash]

This is typically seen when devices go into power saving mode.

The following thread has some additional detail

Switch port change link speed - The Meraki Community