According to the information found on the CISCO website a runt is defined as a packet with less than 64bytes AND a bad CRC.
I'm using wireshark to capture an interface where I have a lot of input errors the same amount as runts.
But when I analyze the trace file I can't find any packet with a bad CRC. I have no problem finding packets with less than 64 bytes (arp requests for example ).
How am I able to determine the source of my runts then ?