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- Path: sparky!uunet!wupost!emory!gwinnett!campbell!bc
- From: bc@campbell.Gwinnett.COM (campbell)
- Newsgroups: comp.protocols.ibm
- Subject: Manual Help Needed
- Message-ID: <H7yVwB2w164w@campbell.Gwinnett.COM>
- Date: Mon, 04 Jan 93 23:19:04 EST
- Organization: Suncrest, Fairlawns, & Mulberry Frisbee Club
- Lines: 45
-
- Can someone tell me which - if any - document(s) (IBM or otherwise)
- explain the innards of DLC protocol? SNA frames in general?
-
- I have a couple documents which help some, the 3174 Functional
- Description [June 1991] and the SNA Reference Summary Booklet.
- (I'm not sure of the exact names right now but these are close).
- These books help some, especially the latter. It has the general
- breakdown of the TH, RH, & RU as well as excruciating detail of the
- SNA & DLC commands.
-
- There is an awful lot in both these documents but I have come
- across some things in writing, modifying, and testing 3174 controller
- code that I can't seem to find the answers to. Some of these are:
- What do I screw up if I accidentally send the host two consecutive
- NOTIFYs? In this case, is the reception of a sense message good
- enough to continue or am I hosed up from then on? (I. e, pending
- my fixing that particular problem, is the rest of what I see okay?)
- What do I do if the reserved bit of byte0 of the RH is set sometimes
- and not others? What exactly is the meaning of the DR1 bit?
- There are more.
-
- I have found many answers by just asking people I work with.
- But when I ask where anyone ever found these things out, they
- ALWAYS say "I don't remember" or "Someone told me that once."
-
- For that matter, does anyone know where I can find a state
- machine/graph/chart/whatever of what is to be returned to
- the host depending what is received in whatever mode? (For
- example, an ACTLU in NRM).
-
- I have no problem getting my employer to order what I need if I
- can just find out what would help the most. As most people know,
- the list of IBM manuals - even for the most narrow subject - is huge!
- Maybe there are a couple manuals I have missed that have fallen
- through the cracks that would fit the bill.
-
- Can anyone help?
-
- Thanks!
-
- |__________________________|______________________________________|
- | Bob Campbell | |
- | bc@campbell.Gwinnett.COM | "Think not of the hours wasted... |
- | ...!emory!gwinnett!bc | but of all yet to be tasted." |
- |__________________________|______________________________________|
-