Re: ISCSI: Urgent Flag requirement violates TCP.

["Dick Gahan" <Dick_Gahan@eur.3com.com>]

Matt
     After a TCP segment is lost - what is the maximum and average number of
bytes that can be received without
     seeing an URG flag in your scheme, since you state that

>We don't care if sometimes coalescing happens.  The point is, that somewhere
>down the stream, an urgent pointer will point to the beginning of a new iSCSI
>message and messages after this point can be processed.  All messages between
>the point of the dropped segment and this point will of course have to be
>retransmitted.

     Dropping good segments just because they were out of order(previous missing
one)
      seems wrong and wasteful of bandwidth.
     On a lossy connection you would make it even lossier!.

     Also, when TCP advertizes a window size it should be able to buffer that
amount of data in case
     the application cannot accept the data straight away or at the rate
required. In your appliaction
     I assume the application is willing and ready to receive all the data in
the window whenever it comes.

Dick Gahan
3Com





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