[c-nsp] Real quick interface statistics question

[Drew Weaver]

627425063 packets input, 85917292730 bytes, 0 no buffer
Received 2 broadcasts, 0 runts, 0 giants, 0 throttles
68 input errors, 0 CRC, 0 frame, 68 overrun, 0 ignored

What exactly is an overrun on a gigabit Ethernet card and is 68 out of 627,000,000 packets a large issue?

I'm just wondering, I haven't been able to find a definitive answer from Cisco only how overruns pertain to serial interfaces.

Thanks,
-Drew