Microsoft KB Archive/279423

= XADM: How to Use the DSAdiag Utility =

PSS ID Number: 279423

Article Last Modified on 9/9/2003

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The information in this article applies to:


 * Microsoft Exchange 2000 Server
 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange Server 2003 Standard Edition

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This article was previously published under Q279423



SUMMARY
This article describes the DSAdiag utility (DSAdiag.exe), which can be very useful when diagnosing directory access problems with Exchange 2000 Server and Exchange Server 2003.



MORE INFORMATION
Exchange 2000 and Exchange 2003 use the DSAccess API to communicate with Active Directory. DSAdiag.exe is a utility that lists the domain controllers, global catalog servers, and the configuration domain controller that the DSAccess API attempts to contact on behalf of Exchange. The status of the connection is displayed in the output (Up, Down, Fast, Slow, In Synch). If DSAccess is having trouble communicating to a particular domain controller or global catalog server, it fails over to a different Active Directory server.

When you use DSAdiag.exe, you can manually force server discovery. DSAdiag.exe must be copied into the \Program Files\Exchsrvr\Bin folder. Open a command prompt and change the folders to \Bin. When you type dsadiag and press ENTER, two options are displayed:


 * DSAdiag 1: This option displays the domain controller, global catalog server, and the configuration domain controller list.
 * DSAdiag 2: This option forces Topology Rediscovery, which rediscovers the topology of the domain controller, global catalog server, and the configuration domain controller.

For example, if a global catalog server has been taken down for maintenance and brought back online again, and DSAccess has not realized that the server is available once more, you can use the DSAdiag 2 option to force the server to rediscover the available servers. DSAdiag enumerates the list of Active Directory servers that the DSAccess API reports, it does not issue its own Lightweight Directory Access Protocol (LDAP) requests to the Active Directory servers.

The following text is an example of the output that you receive when you use the DSAdiag 1 option: D:\Program Files\Exchsrvr\BIN>dsadiag 1 .......

Working DC's:

UP FAST DOWN InSync   Name

X X         X         

Working GC's:

UP FAST DOWN InSync   Name

X X         X         

Config DC:  Done In the United States and Canada you may contact Microsoft Product Support Services at (800)936-5800 for this utility. For additional information about DSAccess, click the article number below to view the article in the Microsoft Knowledge Base:

247262 XCON: How DSAccess Detects DCs, Global Catalogs, Config DCs in a Domain

Additional query words: xmrp dsaccess api, directory service DC GC GCS config

Keywords: kbinfo KB279423

Technology: kbExchange2000Search kbExchange2000Serv kbExchange2000ServSearch kbExchangeSearch kbExchangeServ2003Ent kbExchangeServ2003Search kbExchangeServ2003St

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