No, the tcpdump o/p which I sent was at the transmitter and that is the
reason I dont understand the missing segments at the transmitting end.
-anu.
On Tue, 25 Jan 2000, Chris Knipe wrote:
> On Mon, 24 Jan 2000, Anupama Sundaresan wrote:
>
> >Hello,
> >
> > Is it normal for TCP to skip a ceratin number of bytes and send
> >them later when it receives dup acks?
> >
> >The following tcpdump o/p illustrates that TCP sends packets in sequence
> >upto a certain point but suddenly skips a certain number of bytes and
> >after receiving 5 duplicate acks transmits not 'retransmits' the missing
> >bytes...
> >
>
> I Would belive so yes. The IP protocol (I belive), sends all the segments
> off to the cable in sequence, but does not gaurantee the correctiveness, or
> delivery of the data (thats why we have TCP). I think what wa happening in
> your scenario, is that all the packets got sent successfully, but some
> segments failed to arrive correct at the remote end, which then
> re-requested the data, causing them to look as if it was sent out of
> seguence ??
>
> Regards
> Chris Knipe
> Cel: (083) 430 8151
> Freelance Internet Developer, Consultant, Administrator & Speaker
>
>
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