Re: tcp errors detection

[M K <gedropi () gmail com>]

Also just go to the menu item Analyze>Expert Info.  Click on a, for
example, Retransmission row inside the Expert Infos box and it will
take you to the exact location within the pcap.

On 4/18/10, Abhik Sarkar <sarkar.abhik () gmail com> wrote:
> Hi Victor,
>
> Have a look at this page: http://www.wireshark.org/docs/dfref/t/tcp.html
>
> You can use display filter on the following fields:
> tcp.analysis.retransmission
> tcp.analysis.fast_retransmission
> tcp.checksum_bad
>
> For TCP checksums, please also refer to this page:
> http://wiki.wireshark.org/TCP_Checksum_Verification
> For retransmissions, also refer to this page:
> http://wiki.wireshark.org/PacketLoss
>
> HTH
> Abhik.
>
> On Sun, Apr 18, 2010 at 4:17 PM, Victor lyamtsev <vlyamtsev () gmail com>wrote:
>
> > Hi,
> >
> >  how can i locate retransmission error for TCP sequence in wireshark
> > capture ?
> > Should I look for ACK with repeated sequence number ?
> > For example:
> >
> > [ACK] Seq = 1355 Ack = 13409 ...
> > [ACK] Seq = 1355 Ack = 13500
> >
> > How can i detect checksum errors from the capture ?
> >
> > Thanks,
> > -vvv
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