The dataset analyzed is not relevant to today's networking
connectivity or technologies. Looking very quickly at a small set of
data I have access to (servers serving web content to the internet
users):
32,945,810,591 packets received, 0 dropped due to bad checksum (ip
header checksum)
1,004,728,008 datagrams received, 0 bad checksum, 15886 with no
checksum (udp datagram stats)
Just polling the routers here, I see a similar scenario, e.g.,
4,166,900,871 packets 0 dropped due to bad checksum
Marshal, do your routers actually calculate the checksums of the
packets they process?
Shane, are you sure that checksums aren't be calculated lower down in
the hardware than your counters are counting? I have seen cases where
error counters showed up as zero, because the packets that would have
invoked those errors were already discarded at a lower level.
Margaret
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