FTD (2110) v6.6 Interface bouncing (ISP or FTD?)

[newbieftd]

Our external interface (1/1), is bouncing/disconnecting.

How can I monitor the interface through the CLI to look for errors?

I have run the "show interface g1/1 stats" (and other options), but I don't see CRC errors, or other errors.

-newbiftd

[balaji.bandi]

is this directly connected to ISP, if so suggest to take small switch and add between ISP and FTD and observe ?

[newbieftd]

FTD is directly connected to ISP router.
ISP says they are not seeing any errors, but I wany to check via the FTD. Switch would help me to capture, but it is so random. I'd like to see stats like CRC, retries, utilization, .....