and if i disable all other protocols except ethernet, ip, tcp, iscsi in
ethereal analyze (hint from Dima), these snack disappeared.
ming
On Thu, 2005-04-21 at 05:04 -0400, ronnie sahlberg wrote:
> yeah i saw those weird SNACKs too.
>
> a very very quick eyeballing of them suggests that it is a bug in the
> sender of those semgents and not the thereal decode.
>
> i will check it properly tomorrow. it is probably an ethereal bug or
> else the other iscsi host receiving them should have been very
> "confused" and a hard error should have resulted.
>
>
>
>
>
> On 4/20/05, Ming Zhang <mingz@xxxxxxxxxxx> wrote:
> > and still this log
> >
> > all the iscsi snack requests like 520, 529, have strange decoding. the
> > data before decoding is unreasonable. just a ascend order of all ascii.
> >
> >
> > ming
> >
> > On Wed, 2005-04-20 at 13:39 +1000, ronnie sahlberg wrote:
> > > that frame looks normal to me.
> > > it is just that the initiator generated three scsi commands and sent
> > > them across and the TCP layer decided to collapse them all into one
> > > single tcp segment.
> > >
> > > this happens if the application is generating pdu's faster than the
> > > tcp layer can push the data out the wire.
> > >
> > >
> > >
> > > On 4/20/05, Ming Zhang <mingz@xxxxxxxxxxx> wrote:
> > > > met a strange error when decoding attached log, No 531. i do not know
> > > > how to describe it accurately. but in decode window i see something
> > like
> > > >
> > > > Frame 531
> > > > Ethernet
> > > > Internet protocol
> > > > TCP
> > > > iSCSI
> > > > SCSI CDB
> > > > ISCSI
> > > > SCSI CDB
> > > > iSCSI
> > > > SCSI CDB
> > > >
> > > > so it looks like extra 2 pairs of iscsi/scsi here.
> > > >
> > > > Running with libpcap version 0.8.3 on Linux 2.6.10-1.770_FC3.
> > > >
> > > >
> > > > ming
> > > >
> > > >
> > > > _______________________________________________
> > > > Ethereal-dev mailing list
> > > > Ethereal-dev@xxxxxxxxxxxx
> > > > http://www.ethereal.com/mailman/listinfo/ethereal-dev
> > > >
> > > >
> > > >
> > > >
> >
> >
