CONTENTS Title Page Copyright Page Preface Part I Introduction 1 The Domain Gateway: An Overview 1.1 Using Digital's SNA Gateways 1.1.1 The Domain Gateway-CT Implementation 1.1.2 The Domain Gateway-ST Implementation 1.1.3 The Domain Gateway Physical Unit (PU) Type 1.1.4 The Domain Gateway-CT's IBM Interface 1.1.5 The Domain Gateway-ST's IBM Interface 1.2 The Structure of the Domain Gateway 1.2.1 SNA Access Routines 1.2.2 3270 Telnet Server (DEC OSF/1 Load Hosts Only) 1.2.3 The Non-SNA Side of the Domain Gateway 1.2.4 The SNA Access Server Module 1.2.5 The SNA Side of the Domain Gateway 2 Configuring the Domain Gateway: An Overview 2.1 Planning for the Domain Gateway (Overview) 2.2 Configuring the Domain Gateway (Overview) Part II Planning Tasks 3 Planning for the Domain Gateway 3.1 Planning Activities 4 Planning for the Domain Gateway's Load Host 4.1 The Gateway Load Host Worksheet 5 Planning for the Domain Gateway's DECnet Node and IP Host 5.1 The DECnet Node and IP Host Worksheet 6 Planning for the Domain Gateway SNA Access Server 6.1 The SNA Access Server Objects Worksheet 7 Planning for the Domain Gateway-CT Channel Data Link 7.1 The Channel Data Link, Local Subarea PU, and Local SSCP Worksheet 8 Planning for the Domain Gateway-ST SDLC Data Links 8.1 The SDLC Data Link Worksheet 9 Planning for the Domain Gateway Subarea Routing 9.1 The Channel Data Link, Local Subarea PU, and Local SSCP Worksheet 9.2 The SNA Switched PU Worksheet 10 Planning for the Domain Gateway SSCP Services 10.1 The Channel Data Link, Local Subarea PU, and Local SSCP Worksheet 10.2 The SNA Remote SSCPs Worksheet 11 Planning for the Domain Gateway LU Sessions 11.1 The LU Authorizations Worksheet 11.2 The SNA Logical Units Worksheet 11.3 The LU Access Names Worksheet 11.4 The LU Remote LUs Worksheet Part III Configuration Tasks 12 Installing and Configuring the Domain Gateway 12.1 Installing the Gateway Hardware 12.2 Installing the DEC SNA Domain Gateway Software 12.3 Configuring the Attached IBM System 12.4 Defining the Gateway Node to the Non-SNA Networks 12.5 Configuring the Gateway's Load Host 12.6 Configuring the Domain Gateway Using the Configuration Utility 12.7 Modifying the NCL Script File 12.8 Creating the Loadable Management File 12.9 Loading the Domain Gateway 12.10 Reconfiguring the Domain Gateway 13 Configuring the Domain Gateway's Load Host 13.1 Configuring the Gateway's Load Host 13.1.1 Configuring a DECnet/OSI OpenVMS VAX Load Host 13.1.2 Configuring a DECnet/OSI DEC OSF/1 Load Host 13.1.3 Configuring a DEC OSF/1 TCP/IP Load Host 13.2 Configuring the TN3270 Server (DEC OSF/1 Systems Only) 14 Configuring the Domain Gateway 14.1 Invoking the Configuration Utility (OpenVMS) 14.2 Invoking the Configuration Utility (DEC OSF/1) 14.3 Entering the Configuration Dialog Information 14.3.1 Saving Your Configuration Answers 14.3.2 Using a Saved Answer File 14.4 The Configuration Dialog Sections 15 Configuring the Domain Gateway's DECnet Node and IP Host 15.1 Entering the DECnet Node and IP Host Dialog Information 16 Configuring the Domain Gateway SNA Access Server 16.1 Entering the SNA Access Server Dialog Information 17 Configuring the Domain Gateway-CT Channel Data Link 17.1 Entering the Channel Data Link Dialog Information 18 Configuring the Domain Gateway-ST SDLC Data Links 18.1 Entering the SDLC Data Link Dialog Information 19 Configuring the Domain Gateway Subarea Routing 19.1 Entering the Subarea Routing Dialog Information 19.1.1 Using a VTAM PATH File to Define Gateway Routes 20 Configuring Domain Gateway SSCP Services 20.1 Entering the SSCP Services Dialog Information 21 Configuring Domain Gateway LU Sessions 21.1 Entering the LU Services Dialog Information 21.1.1 Repeating the LU Configuration Section 22 Creating the Domain Gateway Loadable Management File 22.1 Creating the Loadable Management File During Configuration 22.2 Creating the Loadable Management File Separately (OpenVMS) 22.3 Creating the Loadable Management File Separately (DEC OSF/1) 23 Loading the Domain Gateway 23.1 Enabling Event Logging on the Load Host 23.2 Loading the Domain Gateway 23.2.1 Loading the Domain Gateway from a OpenVMS DECnet/OSI Load Host 23.2.2 Loading the Domain Gateway from a DEC OSF/1 DECnet/OSI Load Host 23.2.3 Loading the Domain Gateway at the Hardware Unit 23.2.4 Verifying the Gateway to Load Host Connection 24 Reconfiguring the Domain Gateway 24.1 Reconfiguring the Domain Gateway 24.2 Shutting Down the Domain Gateway 24.3 Modifying the Run-Time Configuration with NCL Part IV Appendixes A Planning Worksheets Gateway load host worksheet DECnet node and IP host worksheet SNA access server objects worksheet SDLC data link worksheet Channel data link, local subarea PU, and local SSCP worksheet SNA switched PU worksheet SNA remote SSCPs worksheet LU authorizations worksheet SNA logical units worksheet (using the LIST method) SNA logical units worksheet (using the POPULATE method) LU access names worksheet LU remote LUs worksheet B Configuration Utility Messages B.1 General Configuration Utility Messages B.2 Configuration Utility PATH File Parser Error Messages C Logon Modes C.1 DECnet SNA VMS Application Programming Interface (API) C.2 DECnet SNA Data Transfer Facility (DTF) C.3 VAX Message Router/P (MR/P) Gateway C.4 DECnet SNA VMS Remote Job Entry (RJE) C.5 Printer Emulators C.6 Terminal Emulators and 3270 Data Stream Programming Interface C.7 SNA Access Routines Using LU 6.2 Protocols D DEC MicroServer Configuration Guidelines D.1 Allocation of the Synchronous Ports D.2 Other Configurations E Securing the Domain Gateway E.1 Securing the Gateway Hardware E.2 Securing the Gateway's Remote Console E.2.1 Defining a Service Password E.2.2 Clearing the Service Password E.3 Securing the Domain Gateway Software on the Load Host E.4 Securing the Domain Gateway's LUs E.5 Securing the Domain Gateway Configuration E.5.1 Securing the NCL and SNAP DECnet Session Control Applications E.5.2 Securing the NCL and SNAP DECnet IP Services Applications E.6 Securing the Data Flowing Through the Domain Gateway E.6.1 Securing the CTF Session Control Applications E.6.2 Securing the CTF IP Services Applications F Diagnosing Gateway Initialization Problems G Domain Gateway Memory Usage G.1 Entity Configuration Guidelines G.1.1 Minimize Entity Instances G.1.1.1 Logon Mode entities G.1.1.2 LU entities G.1.1.3 Path Table entities G.1.1.4 Entity memory usage statistics G.1.2 Minimize the Memory Allocated to Data Link Receive Buffers G.1.3 Avoid RU Segmentation G.1.4 Minimize the Use of Large Pacing Window Sizes G.2 Memory Used by Session Data Structures EXAMPLES 13-1 Configuring a DECnet/OSI Load Host 13-2 Configuring a DECnet/OSI OSF Load Host 13-3 A Sample TN3270 Server Configuration Dialog 14-1 Main Dialog Segment of the Configuration Utility 15-1 DECnet Node and IP Host Configuration Dialog - Section 1.1 15-2 DECnet Node and IP Host Configuration Dialog - Section 1.2 15-3 DECnet Node and IP Host Configuration Dialog - Section 1.3 15-4 DECnet Node and IP Host Configuration Dialog - Section 1.4 15-5 DECnet Node and IP Host Configuration Dialog - Section 1.5 15-6 DECnet Node and IP Host Configuration Dialog - Section 1.5 (Cont.) 16-1 SNA Access Server Configuration Dialog 17-1 Channel Data Link Configuration Dialog 18-1 SDLC Data Link Configuration Dialog 18-2 SDLC Data Link Configuration Dialog (Cont.) 19-1 Subarea Routing Configuration Dialog - Sections 4.1 and 4.2 19-2 Subarea Routing Configuration Dialog - Section 4.3 19-3 Routing Dialog Using an IBM PATH File 20-1 SSCP Services Configuration Dialog 20-2 SSCP Services Configuration Dialog 21-1 LU Services Configuration Dialog - Section 6.1 21-2 LU Services Configuration Dialog - Section 6.2 21-3 LU Services Configuration Dialog - Section 6.2 (Cont) 21-4 LU Services Configuration Dialog - Section 6.2 (Cont) 21-5 LU Services Configuration Dialog - Section 6.3 21-6 LU Services Configuration Dialog - Section 6.4 21-7 Repeating the LU Configuration Section 21-8 Repeating the LU Configuration Section (Cont) 22-1 Configuration Questions for NCL Script File and Loadable Management File FIGURES 1-1 The Domain Gateway-CT Implementation 1-2 The Domain Gateway-ST Implementation 1-3 The Domain Gateway's PU Type 5 Features 1-4 The Domain Gateway-CT's Channel Interface 1-5 The Domain Gateway-ST's Synchronous Data Line Interface 1-6 The Structure of the Domain Gateway 1-7 SNA Access Routines 1-8 3270 Telnet Server 1-9 The Non-SNA Side of the Domain Gateway 1-10 The Non-SNA Side of the Domain Gateway (Cont.) 1-11 The Non-SNA Side of the Domain Gateway (Cont.) 1-12 The SNA Access Server of the Domain Gateway 1-13 The SNA Side of the Domain Gateway 1-14 The SNA Side of the Domain Gateway (Cont.) 2-1 The Planning Process 2-2 The Configuration Process 3-1 The Domain Gateway Worksheets 4-1 The Gateway Load Host Worksheet 4-2 The Gateway Load Host Worksheet (Cont.) 5-1 The DECnet Node and IP Host Worksheet 5-2 The DECnet Node and IP Host Worksheet (Cont.) 5-3 The DECnet Node and IP Host Worksheet (Cont.) 5-4 The DECnet Node and IP Host Worksheet (Cont.) 5-5 The DECnet Node and IP Host Worksheet (Cont.) 5-6 The DECnet Node and IP Host Worksheet (Cont.) 5-7 The DECnet Node and IP Host Worksheet (Cont.) 5-8 The DECnet Node and IP Host Worksheet (Cont.) 6-1 The SNA Access Server Objects Worksheet 6-2 The SNA Access Server Objects Worksheet (Cont.) 6-3 The SNA Access Server Objects Worksheet (Cont.) 7-1 The Channel Data Link, Local Subarea PU, and Local SSCP Worksheet 8-1 The SDLC Data Link Worksheet 8-2 The SDLC Data Link Worksheet (Cont.) 8-3 The SDLC Data Link Worksheet (Cont.) 8-4 The SDLC Data Link Worksheet (Cont.) 9-1 The Channel Data Link, Local Subarea PU, and Local SSCP Worksheet 9-2 The SNA Switched PU Worksheet 9-3 The SNA Switched PU Worksheet (Cont.) 10-1 The Channel Data Link, Local Subarea PU, and Local SSCP Worksheet 10-2 The SNA Remote SSCPs Worksheet 11-1 The LU Authorizations Worksheet 11-2 The LU Authorizations Worksheet (Cont.) 11-3 The SNA Logical Units Worksheet (LIST Method) 11-4 The SNA Logical Units Worksheet (LIST Method) (Cont.) 11-5 The SNA Logical Units Worksheet (POPULATE Method) 11-6 The LU Access Names Worksheet 11-7 The LU Remote LUs Worksheet 12-1 The Configuration Process TABLES 5-1 Common Node Planning Information 5-2 DECnet Planning Information 5-3 IP Planning Information 8-1 SDLC Data Link Planning 11-1 LU Planning Information 14-1 Process Quotas Required by the Configuration Utility 22-1 Process Quotas Required by the Script Compiler utility B-1 Configuration Utility Messages B-2 Configuration Utility PATH File Parser Error Messages D-1 The DEC MicroServer-SP Port D-2 DEC MicroServer Ports E-1 Security for Domain Gateway Files on OpenVMS Load Hosts E-2 Security for Domain Gateway Files on DEC OSF/1 Load Hosts G-1 Entities & Memory Allocation G-2 Sample SDLC configurations