Error: !next command is internal

[esuchanov]

Hello dear community,

I have a problem with my several SF300-08 Switches. They lose their uplink port without any interference my myself of my employees. We a

I configure the uplink correctly and it works for some time but then the port changes and displays default config on that interface with a new msg "!next command is internal"

It happens randomly but on allways on the same devices. Even after i changed the uplink port from port 1 to port 8 it happened again. After that i swapped the switch for a new one and same result.

I hope someone can help me here since i didnt found enough good results on google nor here. If more infos are needed just tell me but I can't post full configs etc cause of data privacy of our company.

[davidhowell24 · Accepted solution]

Hi,

I have the exact same problem as you with exactly the same model of Cisco Small Business Switch. I have 23 of these to set-up which will connect into a Nexus 5548!

If you define again what VLAN's are allowed access then it brings the trunk up, very strange and will investigate further as I need to get this resolved. I've had to disable UDLD as the Nexus port just disabled straight away when UDLD is enabled.

[davidhowell24 · Accepted solution]

Hi,

You've probably solved this by now but if you haven't then if you go into the Web GUI and under Port Management go to Smartport and then Interface Settings and disable 'Auto Smartport' for the uplink(s) in question. This appears to resolve the issue. Remember to save the configuration once done!

David  :-)

[esuchanov]

Hi David,

tnaks a lot for the help. Yes, I've already solved this a long time ago. You correctly identified that the issue was the enabled smart ports