The checksum can be offloaded to hardware and not yet be applied for
the packets sent from the machine. This is done at least in Sun Sparc,
the checksum is 0 in these cases.
>From Wireshark 0.99.6 these packets are marked with "Checksum
offloaded" (but the default packet coloring still marks them as
failures).
/Gerhard
On Dec 12, 2007 6:57 PM, Richard Whittaker <RWHITTAKER@xxxxxxxx> wrote:
> Greetings:
>
> We've done a couple of rounds of network captures of serveral workstations, and have run into some significant "oddness"...
>
> In the first round of captures, on 6 of the 8 workstations there were in excess of 50% of all packets tagged at "TCP CHECKSUM INCORRECT"...
>
> Did some research, found the option to disable TCP checksumming, and re-ran the captures... We're getting the same results on the same workstations... Is this a badly configured network/workstation/driver?...
>
> Thanks,
> Richard.
>
>
> Richard Whittaker, CISSP
> Config Manager, Hardware and O/S
> NorthwesTel Inc.
> (867) 393-7756
> Temp number: (867) 668-5389
>
>
>
>
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>
>
--
Gerhard
The sender address really contains .nospam.
