Re: [storm] iSER

David,

I agree with this position.

Mike

On Mon, Apr 23, 2012 at 6:02 AM, <david.black@emc.com> wrote:

> We don't seem to be making progress on definitive requirements that
> vary by RCaP, so here's another suggestion (would be [4] if I were
> numbering it ...)
>
> It's clear that at least one implementation has diverged from the
> requirements in RFC 5046 for use of SendSE, SendInv and SendInvSE.
> I suggest documenting this and applying the IETF approach of "be
> conservative in what you send, be liberal in what you accept",
> roughly as follows:
>
> i) Some iSER implementations have not followed RFC 5046's strict
> requirements
>        for use of SendSE, SendInv and SendInvSE; they use Send instead.
> ii) For interoperability, iSER implementations SHOULD accept and correctly
>        process SendSE, SendInv and SendInvSE messages.
> iii) SendSE, SendInv and SendInvSE should be regarded as optimizations or
>        enhancements to the basic Send message, and their support varies by
>        RCaP.  If these messages are used, the implementation SHOULD be
>        capable of reverting to use of Send in order to work with a receiver
>        that does not support these messages (lack of receiver support MUST
>        result in an error send back to the sender).  These messages
>        SHOULD NOT be used with the InfiniBand RCaP because InfiniBand does
>        not require support for their functionality.
> iv) New iSER implementations SHOULD use Send (and not these three
> additional
>        messages) unless there are compelling reasons for doing otherwise
>        (latter is implicit in use of "SHOULD", but worth saying explicitly,
>        IMHO).
> v) Some new text will be needed (including Security Considerations) to
>        make it clear that STag invalidation is necessary for security
>        reasons, and has to be performed independent of whether an
>        Invalidate version of Send was used or not.
>
> Is this workable?
>
> Thanks,
> --David
> ----------------------------------------------------
> David L. Black, Distinguished Engineer
> EMC Corporation, 176 South St., Hopkinton, MA  01748
> +1 (508) 293-7953             FAX: +1 (508) 293-7786
> david.black@emc.com        Mobile: +1 (978) 394-7754
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>
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Re: [storm] iSER - another try