I'm using ASDM to display packet errors on the outside interface of an ASA 5520. This allowed me to see I was getting CRC errors. Setting the interface to auto-detect fixed the problem, and I'm not getting any more errors -- the total number of errors shown (38636) now remains unchanged. The graph says this is "real-time, data every 10 seconds", so I guess I'm seeing the value of a counter in the ASA that isn't changing. I would like to reset that counter. Do I use the ASA CLI for this purpose? Any pointers?