Connected USB device

[dhoshiel]

I have a Raspberry PI2 connected to the standard serial port on an G-4860.  It powered up and ran fine for a while, but doesn't appear to be online, any more.

Can I 'power cycle' or disable/enable the port via CLI or GUI?

Thanks, in advance,
Dennis

[jimp]

It's not quite clear from your wording what you're asking.

Do you mean the RPI2 is a serial client connected to the USB serial console port on the SG unit?

… and the console is no longer working?
... and the RPI2 is no longer working?
... and the SG-4860 is no longer working?
... and the SG-4860 is not connecting to the Internet?

Reset what port? The serial port? The WAN port? something on the RPI2?