I have a Cisco3640 with 2 fast ethernet cards in it.
One of the ethernet ports is dropping packets, (ie. losing pings).
On the "show interface fast" command it says, "100BaseTX/FX".
But when I look to buy a replacement 100-Mb card, I appear to have 2 options:
(1) NM-1FE-TX
(2) NM-1FE-FX
What are the differences?
Which one do I currently have,(if it lists both on the running configs)?
And if I upgrade,(3700, 3800, etc....), would one be better then the other,(for being able to be used in a newer model of router)?
Or should I be looking at a "NM-2FE" card?