Introduction

Output drops are caused by traffic rates exceeding the maximum bandwidth specification of the interface.

Solution

There are actually only 2 solutions to output drops:

1. Increase the Interface speed
2. Reduce the traffic throughput

If you have monitoring in place then it would be advisable to increase the alert threshold to a significant value. Reference https://www.fir3net.com/Switches/Cisco/troubleshooting-interface-drops-on-a-cisco-switch.html http://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/6343-queue-drops.html