DIGITAL


           DEC SNA Peer Server

           AV-Q2Y4E-TE
           ________________________
           October 1995

           Dear Customer:

           Thank you for purchasing the DEC SNA Peer Server software. This
           package contains the DEC SNA Peer Server V1.3 software and doc-
           umentation. Check the bill of materials to see that your distri-
           bution kit contains all the items listed. If any of the items are
           missing or damaged, you should contact your Digital representa-
           tive.

           Please take a few moments to read the DEC SNA Peer Server software
           release notes, which can be found on the distribution media in
           the directory /T21130/documentation. Refer to DEC SNA Peer Server
           Installation and Configuration for directions on mounting and
           reading the directory.

           Note that the software kit is located in the directory /T21130/kit
           (with an uppercase T).

           Features

           The DEC SNA Peer Server software links TCP/IP and DECnet/OSI
           users to the SNA environment. In the non-SNA environment, the
           Peer Server is media independent, allowing you to connect to it
           over Ethernet, token ring, FDDI, or other networks supported at
           your site. In the SNA environment, the Peer Server connects to SNA
           nodes over:

           o  SDLC-Synchronous Data Link Control.

           o  QLLC-Qualified Logical Link Control, requires X.25 for Digital
              UNIX.

           o  LLC2-Logical Link Control type 2, supports Ethernet, Token
              Ring, and FDDI.

           Both wide area (WAN) and local area (LAN) access are supported. As
           a T2.1 device, the Peer Server provides primary and secondary ac-
           cess to the SNA network, including support for multiple concurrent
           sessions from a given LU. Support for LU6.2 protocols allows the
           implementation of parallel sessions. Also, the Peer Server sup-
           ports SNA sessions where the primary LU can reside in the SNA or
           non-SNA network.

           The Peer Server V1.3 software installs only on Digital UNIX V3.2
           or later.

           Peer Server features include:

           o  Digital UNIX application running on Digital's Alpha AXP sys-
              tems.

 






           o  Multiprotocol (TCP/IP or DECnet) support.

           o  Backward compatibility with most existing Digital access rou-
              tines and applications.

           o  Support for SNA node type 2.1 protocols.

           o  Connections into SNA Advanced Peer-to-Peer Network (APPN).

           o  Support for LU6.2 protocols.

           o  Support for node type 2.0 protocols for use in traditional SNA
              hierarchical networks.

           o  Provides a TN3270 server that allows TN3270 clients access to
              IBM applications as SNA terminals; TCP/IP is not required on
              the mainframe.

           Refer to the DEC SNA Peer Server Software Product Description (SPD
           51.08.02) for a complete description of the product.

           Documentation

           The DEC SNA Peer Server software documentation set includes the
           following manuals:

           o  DEC SNA Peer Server Installation and Configuration

           o  DEC SNA Peer Server Management

           o  DEC SNA Peer Server Network Control Language Reference

           o  DEC SNA Peer Server Guide to IBM Resource Definition

           The information contained within the DEC SNA Peer Server V1.2 doc-
           umentation set remains unchanged for the Peer Server V1.3 software
           release. Please continue to use the Peer Server V1.2 documentation
           set with the Peer Server V1.3 software.

           Documentation is available in Bookreader format on the layered
           product documentation CD-ROM. If you need to order any additional
           documentation, please contact your Digital sales representative
           or refer to the ordering information in the Software Documentation
           Products Directory.

           Digital prides itself on responding to customers needs. In order
           to continue serving you, we need your comments. You can use the
           Internet address doc_quality@lkg.mts.dec.com to mail comments di-
           rectly to us. There is also a preaddressed, postage-paid Reader's
           Comment form at the back of each manual. If you find errors in a
           manual or want to make comments, please send electronic mail or
           complete and return the Reader's Comment form.

                ©Digital Equipment Corporation. 1995. All rights reserved.


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