Was: Protocol Development on SUN 2 and 3 computers.


Steven L. Sneddon (sned@PEGASUS.SCRC.Symbolics.COM)
Thu, 18 Dec 86 10:25 EST


>From an equally biased source with a different viewpoint....

    Date: Tue, 16 Dec 86 10:01:55 PST
    From: melohn@Sun.COM (Bill Melohn)

    Speaking as an admittedly biased source, the Sun Datacomm group has
    managed to implement OSI (MAP/TOP) with a minimum of kernel changes
    using the basic protosw, ioctl facility, and even the routing table
    routines from the standard SunOS. We also have implementations of X.25,
    SNA, and DECnet which all use the ifnet structure to layer different
    protocol instances on top of different datalinks (HDLC, SDLC, 802.x).
    As you might expect, the farther your protocol is from the TCP/IP
    model, the less useful the standard networking code will be.

    If your goal is XNS under Unix, it makes sense to use the 4.3
    implementation.
I can't really disagree with that.
                        As a general platform for protocol/network
    development, we believe SunOS offers most of the facilities you
    need.

If your goal is general protocol/network development or cross-system
integration, the Symbolics Lisp Machine's "Generic Network System" is
probably 10x more powerful. Use UN*X to develop UN*X software,
particularly when there are no deep design issues involved. Use
something far better if there are any hard or unresolved issues to be
solved. I could easily justify my 10x claim, but this conversation
wasn't about that.

Steve Sneddon
Manager of Networks and Communications
Symbolics, Inc.



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