cisco switch 2960 output drops

https://supportforums.cisco.com/discussion/10959041/2960-high-output-drops

IF you see output drops with show int command and there is no other error on the output of the command, just the drops this may be highly related to qos. Add check proc for mls qos. If mls qos is enabled on the switch, by defualt it uses 4 output queues and share the interface bandwith between them. This may cause packet drops.