We've been experiencing for a while now issues with discarded packets on an interface on a 3750, this interface has a server attached that does backups on a nightly basis across our WAN.
When I look at both the interface on the server and the interface on the switch its showing a huge number of discards, these discards seem to follow the pattern of data throughput so as throughput increases so does the discards.
I've read some info about buffers and how these can cause discarded packets when there's none free and I know these can be tweaked but am not confident enough to know exactly what to change and by how much. I've attached the sh buffers from the switch concerned.
I'm in the process of doing a packet capture of the interface to see if the server itself is causing the issue.
If anyone can give me any advice and help it would be much appreciated?