- Post the error message as it appears in the logs of the 3750 switch stack and also as to how it is reported in the logs of the Unifi swatch ;
even better configure a central syslog server on the 3750 switch stack and the Unifi switch (too).
Then checkout the logs from the devices on the syslog server when this event happens,
M.
-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '