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- DOCUMENT:Q111954 04-MAR-1994 [W_NT]
- TITLE :SMB Incorrectly Defined in Windows NT Resource Kit
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:BUGLIST3.10
-
- --------------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT Resource Kit for Windows NT and Windows NT Advanced
- Server version 3.1
- --------------------------------------------------------------------------
-
- SYMPTOMS
- ========
-
- The Windows NT Resource Guide, Volume 1 of the Windows NT Resource Kit,
- incorrectly defines the functionality of a Server Message Block (SMB) as it
- pertains to networking architecture. On page 583, it states:
-
- The redirector packages SMB requests meant for remote computers in a
- structure known as a Network Control Block (NCB). NCBs can be sent over
- the network to a remote device.
-
- In actuality, NCBs are never sent over the wire. Rather, SMBs are
- transmitted over the physical media instead.
-
- RESOLUTION
- ==========
-
- The NCB functions as an intermediary between the redirector and the
- protocol driver in Microsoft network architecture. Requests from the
- redirector sent down the network stack to the protocol driver must first be
- registered as NCB commands. Examples of NCB commands are ADD.NAME, CALL,
- RECEIVE, and SEND. Once the commands are registered in the NCB, the
- redirector calls the protocol driver and passes a pointer to the memory
- location of the NCB. The protocol driver can then act on the data contained
- in the SMBs according to the instructions contained in the NCB. The
- protocol driver then registers the results of the completed redirector
- requests in the appropriate NCB field and returns program control to the
- redirector.
-
- The technical classification for an NCB is Interface Control Information,
- or ICI. Interface Control Information functions completely within the
- layered architecture of an individual protocol stack, and therefore this
- control information itself never passes across the physical media of the
- network. The SMB may be classified as a Protocol Data Unit (PDU) which
- ultimately is transmitted across the physical network connection from one
- station to another.
-
- STATUS
- ======
-
- Microsoft has confirmed this to be a problem in the Windows NT Resource
- Kit. We are researching this problem and will post new information here as
- it becomes available.
-
- Additional reference words: requestor buffer osi chain.send docerr 3.10
- KBCategory:
- KBSubCategory: CFE ntrk docer
-
-
- =============================================================================
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-
- Copyright Microsoft Corporation 1994.