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    Re: iSCSI: SNACK RunLength




    Michael,

    The paragraph says that if you issue a SNACK after the MaxPDURecvLength has decreased you should use RunLength 0 (meaning all) instead of a specific runlength which might not be accurate anymore.

    Julo


    Michael Schoberg <michael_schoberg@cnt.com>
    Sent by: owner-ips@ece.cmu.edu

    25-03-02 19:43
    Please respond to Michael Schoberg

           
            To:        "IPS Reflector (E-mail)" <ips@ece.cmu.edu>
            cc:        
            Subject:        iSCSI: SNACK RunLength

           


    Am I just not reading this or can this paragraph use some help?  Can someone
    give an interpretation?

      9.16.3  RunLength
                                     ...

              The first data SNACK, issued after initiator's MaxRecvPDULength
              decreased, for a command issued on the same connection before the

              change in MaxRecvPDULength, MUST use RunLength "0" to request
              retransmission of any number of PDUs (including one).  The number
    of
              retransmitted PDUs in this case, may or may not be the same as
    the
              original transmission, depending on whether loss was before or
    after
              the MaxRecvPDULength was changed at the target.


    Does this refer to something like:

    For connections with unacknowledged PDUs that undergo MaxRecvPDULength
    negotiation ...





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