I have 3 c3550's acting as routers. in NTA summary, some interfaces are intermitantly NOT receiving data. ie the last data received is a few days ago.
I am not receiving any unmonitored alerts in the last 25 events. I know the interfaces have ip route-cache flow on and the ip flow-export is using ver 5 and is pointing to the correct ip address and port number.
the fact it sometimes shows data in NTA suggests its set up correctly.
does anyone know of any issues with using these 3550's?