what would cause ip/tcp/udp checksum error
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09-08-2017 07:11 AM - edited 03-05-2019 09:06 AM
our Linux Server kernel log report lot of "udp bad checksum "
now i am not sure if that means the udp packet was drop by the kernel
and i am wondering what knid of think would cause the checksum error in data in transfering stage .
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09-08-2017 07:22 AM
would Router/Switch change ip/tcp/udp checksum values ?
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09-08-2017 10:04 AM
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09-08-2017 10:14 AM
Generally bad checksums (or CRCs) will cause whatever the base data being checked to be considered corrupt and ignored.
Actually there are many things that can corrupt a data transmission. If fact, at best, transmission media generally has an expected error rate, often it's a very small/low value.
Conversely, if the error rate is higher, especially if significantly higher than what the specs call for, if should be investigated for remediation.
More information might be found here: https://en.wikipedia.org/wiki/Bit_error_rate
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09-08-2017 07:20 PM
can Router/Swtich cause the data corrupt ?
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09-09-2017 04:31 AM
The innards of the Router/Switch, usually not.
The interfaces of the Router/Switch, it may.
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09-08-2017 07:24 PM
or , how can we test the bit error rate ?
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09-09-2017 04:32 AM
However, within Cisco devices, interface stats will often reveal media corruption errors.
