🚀 go-pugleaf

In article <8909282031.AA18413@jade.berkeley.edu> Adnan Yaqub
        <gem.mps.ohio-state.edu!wuarchive!mailrus!cwjcc!hal!ncoast!sgtech!adnan@
        writes:
>Anybody know of a good introductory reference on SNA in particular and
>(possibly) IBM protocols in general?

I don't know of a good "introductory" reference, but if you're looking for
reference materials (although SOMEWHAT outdated in relation to the latest
and greatest <IBM's opinion, not mine> IBM products), I can suggest two
IBM publications:
   SC30-3112  SNA Format and Protocol Reference Manual
     This is the "blueprint" that IBM built SNA from starting in 1979. They
     have just recently (with ACF/VTAM V3R2) implemented some of the
     elements that were defined way back then.  Besides giving the nitty-
     gritty about formats and logic, it also has English descriptions of
     how stuff works (or was intended to work.....note that IBM always
     disclaims that any of its products follow any of its protocols).
   GA27-3136-6  SNA Reference Summary
     This is NOT to be confused with the -7, -8, -9, etc. versions called
     "SNA Formats".  This is THE reference manual for byte/bit definitions
     and meanings (sometimes the meanings are not all that clear).  There
     is more than what's in this manual, but they've put that info into
     "LYxx-xxxx" documents (licensed), so you can't get at it.  Note that
     the -7 on up manuals have had significant information removed.  If
     you cannot get the -6 version, try ordering manual number
     GT00-2480-0 from Mechanicsburg (wherever that is....).

M. A. Pasek          Switching Software Development         NCR Comten, Inc.
(612) 638-7668              CNG Development               2700 N. Snelling Ave.
pasek@c10sd3.StPaul.NCR.COM                               Roseville, MN  55113