If you connect uplink to C9200L-24T-4G-E product, all UTP ports go dow

[Terry.]

If you connect SFP uplink to C9200L-24T-4G-E product, all UTP ports go down.

I have three, and all of them have such symptoms.

It's the same when I upload the latest firmware.

I attached a video.

[M02@rt37]

Hello @Terry. 

Spanning tree protocol issues could cause the UTP ports to go down if there is a loop or misconfiguration in the network. Ensure that STP settings are correctly configured, and there are no blocked ports leading to topology changes that could disable UTP ports.

Verifying STP logs, checking for root bridge settings, and monitoring for port state transitions or BPDU inconsistencies might help you to identify if STP is contributing to this behavior...

[Terry.]

Dear.M02@rt37

Currently, only 2 SFP ports are connected, and 1 laptop port and 1 Internet port are connected. It's too hard

[Terry.]

I've solved it.