DOCUMENT:Q149437 09-AUG-2001 [winnt] TITLE :Unconnected Token Ring Adapter Won't Initialize PRODUCT :Microsoft Windows NT PROD/VER:3.10 3.50 3.51 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 3.1 - Microsoft Windows NT Workstation version 3.1 - Microsoft Windows NT Advanced Server, version 3.1 - Microsoft Windows NT Workstation versions 3.5, 3.51 - Microsoft Windows NT Server versions 3.5, 3.51 ------------------------------------------------------------------------------- When you set up Windows NT in a token ring environment, the token ring card fails to bind if the card is not currently on a ring or if a hardware loopback adapter is not installed. This is indicated by Event Log errors about dependency services relating to the adapter card's failure to start. For a token ring card to initialize properly, it must either have connectivity to a Multiple Access Unit (MAU), a Control Access Unit (CAU), or a Lobe Attachment Module (LAM); or it must have a simulated connection, such as a hardware loopback adapter, installed. Make sure the computer on which you want to install Windows NT either is connected to a correctly functioning ring or has a hardware loopback adapter installed. The components of a correctly functioning ring are interrelated as follows. CAU and LAM components can replace a MAU. The CAU adds power and port monitoring capability to any connected LAMs. The LAM looks like a MAU but has 20 connections instead of 8. The ring-in and ring-out connections on the CAU extend the connectivity of token ring networks. You can intermix MAUs with CAUs and LAMs but you cannot provide any monitoring capability to the MAU ports. One CAU can support up to four LAMs for a total of 80 connections. Additional query words: 3.10 token ring loopback loop back MAU ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNTWsearch kbWinNT351search kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTW310 kbWinNTSsearch kbWinNTS351 kbWinNTS350 kbWinNTS310 kbWinNTAdvSerSearch kbWinNTAdvServ310 kbWinNTS351search kbWinNTS350search kbWinNTS310search kbWinNT310Search kbWinNTW310Search Version : 3.10 3.50 3.51 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.