Xavier BENSEMHOUN wrote:
Hello,
[...]
I have this error bellow on an interface...
[...]
    Pkt/Second:       3  (11.8 % mcast,  0.0 % bcast)
    Byte/Second:    465  (3726  bps)
    Err/Minute:       0  (0  errors)
    Disc/Minute:  818 M  (4294967292  discards)
    Percent Err: 39233 %  (1200  pkts w/o error)
[...]
Last updated Jun 04, 15:37:55; sample: 5 minutes, 0 seconds.
[...]
Could you tell me how can IM could receive this error ??

It should be 99.9999% error.

Percent Err = errors/(errors + pkts)
  Where:
    errors = 4294967292 + 0 = 4294967292
    pkts = 1200 + .118*3*300 = 1306

So, Percent Err = 4294967292/(4294967292 + 1306) = 0.999999

There's an integer overflow bug in the calculation of the denominator, driven 
by the high discard delta:
   4294967292 discards = 2^32 - 4

Regards,

Bill Fisher
Dartware, LLC
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