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- DOCUMENT:Q99372 24-SEP-1993 [W_NT]
- TITLE :Tuning LAN Manager RAS Servers for Windows NT RAS Clients
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:
-
- --------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT operating system version 3.1
- --------------------------------------------------------------------
-
- Summary:
-
- Windows NT Remote Access Service (RAS) is fully compatible with
- Microsoft LAN Manager RAS. However, some tuning may be required when
- connecting from a Windows NT RAS client to a LAN Manager 1.x RAS
- server. Windows NT uses more NetBIOS names than any other Microsoft
- networking client. (Windows NT uses eight NetBIOS names while LAN
- Manager and Windows for Workgroups use only four-five names.) Because
- of this, if some parameters on the LAN Manager RAS server are not
- modified, errors can be generated, indicating the server's name table
- is full or that insufficient NetBIOS sessions are available on the
- server.
-
- The following file fragments are from a sample LAN Manager RAS server
- configuration that has been tuned for Windows NT RAS clients.
- Additional information on these settings can be found in the
- "Additional Information on LAN Manager RAS Settings" section below.
-
- LANMAN.INI
- ----------
-
- [REMOTEACCESS]
- MAXNAMES = 8 ;Specifies the max. number of NetBIOS names for
- ;a single client.
- REMOTELISTEN = ALL ;Remote RAS workstations to act as full peers
- ;on the LAN. Increases number NetBIOS names
- ;listened for.
-
- PROTOCOL.INI
- ------------
-
- [NETBEUI_XIF]
- SESSIONS = 160 ;This must be large enough to accommodate all
- ;simultaneous sessions between this server
- ;and LAN clients, this server and RAS clients,
- ;and RAS clients and other network servers.
- NCBS = 180
- NAMES = 160
-
- [TCPIP_XIF]
- NBSESSIONS = 100
- NUMNAMES = 127 ;This is the maximum for the TCP/IP stack.
- ;NUMNCBS = 85 ;Commenting out NUMNCBS line lets TCP/IP stack
- ;assume the highest value possible.
-
- These modifications represent the minimum settings for Windows NT RAS
- client support. If the LAN Manager server is also handling many other
- network clients, these values may need to be increased.
-
- Additional Information on LAN Manager RAS Settings
- --------------------------------------------------
-
- The RemoteListen parameter is one of the most important settings. It
- can greatly affect the resources devoted to RAS clients and
- effectively make RAS clients full members of the LAN. For more
- information on this parameter, query on the following words in the
- Microsoft Knowledge Base:
-
- REMOTELISTEN and MESSAGES
-
- The number of RAS ports in use at once greatly affects how you tune
- your LAN protocols. With more lines, you can have more sessions; with
- more sessions, you will need more names for each protocol. Because
- Windows NT RAS clients already have twice as many names as LAN Manager
- and Windows for Workgroups RAS clients, this issue becomes even more
- important. If you think you are having a problem relating to this, try
- stopping the messenger service. The messenger service registers
- NetBIOS names for your computer, login identification, and domain;
- disabling the messenger service will reduce your name usage by three.
-
- Windows NT RAS servers are not affected as much by a high number of
- names, as their default maximum names parameter is set to 255. Also,
- under Windows NT, these names are stored in paged memory and do not
- take up system resources as severely as under LAN Manager. The only
- reason to reduce this number is to limit the number of names each
- client can use.
-
- Additional reference words: 3.10
- KBCategory:
- KBSubCategory: NETSRV NTRMT
-
- =============================================================================
-
- 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 1993.