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Communications Access Methods for SAS/CONNECT and SAS/SHARE Software

Tasks That Are Common to SAS/CONNECT and SAS/SHARE

System Administrator or User
To use the SPX access method with an OS/2 host for SAS/CONNECT and SAS/SHARE, perform these tasks:
  1. Verify that you have met all your site and software requirements.

  2. Verify that you know how to set options in SAS software.

  3. Set the SAS/CONNECT and SAS/SHARE options that you want.

System and Software Requirements for SAS/CONNECT and SAS/SHARE

Ensure that the following conditions have been met:

  1. SPX has been installed at both the local and remote hosts at your site.

  2. SAS software has been installed on both the local and remote hosts.

  3. Release 3.0 or a subsequent release of OS/2 has been installed.

  4. Version 2.10 or a subsequent version of the Novell NetWare Requestor for OS/2, Version 2.10 or a subsequent release, has been installed.

Setting SAS Options and Variables

You may need to set specific options in SAS to allow the connections that you want with SAS/CONNECT and SAS/SHARE when using the SPX communications access method.

Consult with your network administrator for advice about these settings.

You may specify an option in several forms, as follows:

Values for these options may contain up to eight characters, consisting of alphanumeric characters, the percent sign (%), the dollar sign ($), the pound sign (#), the at sign (@), and the underscore (_).

If you set multiple forms of the same option , here is the order of precedence that is followed:
OPTIONS statement
SAS invocation
SAS configuration file
DOS environment variable.


SPXMSGSIZE size-of-input/output-buffer
specifies the size of the SAS program's input and output buffer. The range of acceptable values for this option is from 298 bytes to the maximum packet size that your network allows; for example, 1514 bytes on an Ethernet network and 4202 bytes on a Token Ring network.

Be aware that your selection should not violate the buffer size limitations of the Novell Requestor. The OS/2 requestor defaults to a buffer size of 1514 bytes, and the SPX access method also defaults to a buffer size of 1514 bytes. Because the size of the buffer is limited to 576 bytes when using a bridge, if you use SPX over a bridge, you must explicitly define a 576 buffer size for SPX and the Novell Requestor. You set the buffer size for SAS software and the Novell Requestor as follows:

SAS software
set the SPXMSGSIZE option to 576.

Novell Requestor
add a BUFFERS statement under the link support attribute in the NET.CFG file, as follows:

link support
buffers 30 576

The number 30 refers to the number of buffers; the number 576 refers to the size of each buffer, in bytes. The product of these numbers cannot exceed 64K bytes (1,024 bytes = 1K byte).

The maximum buffer size for Ethernet is 1514 bytes, and the maximum buffer size for Token Ring is 4202 bytes. If you are using a Token Ring network, you may want to change the BUFFERS statement in your NET.CFG file to a 4202-byte buffer size and set the SPXMSGSIZE option to 4202.

Ask your network administrator for advice about setting this option.

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Copyright 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.