Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. Chapter 19: Network Communications on z/OS

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. На этой лекции вы узнаете: An overview of the communication network model layers (обзор слоев сетевой модели связи) The software components of the z/OS Communications Server product (компоненты этого ПО) The difference between a VTAM subarea and APPN network topology (разница между подобластями VTAM и сетевой топологией APPN) How the IP network can be used to transport data between SNA applications (как сетевой протокол IP может быть использован для передачи данных между приложениями протокола SNA) Commonly used TCP/IP and VTAM commands (часто используемые команды)

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. IBM Communications Server

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. Open Systems Interconnect (OSI) network model

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. TCP/IP introduction

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. Interconnecting TCP/IP networks

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. Internet addressing

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. TCP/IP commands TCP/IP Commands can be entered TSO ready prompt ISPF Command Shell Prefixing the command with TSO on any ISPF command line. NETSTAT PING TRACERTE NSLOOKUP TELNET FTP z/OS UNIX shell prompt (prefix o=command) onetstat

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. VTAM overview - the SNA environment

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. A pure VTAM subarea network

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. APPN topology

Introduction to the new mainframe © Copyright IBM Corp., All rights reserved. Common VTAM commands D NET,VTAMOPTS Displays VTAM startup options. D NET,CSM[,OWNERID=ALL] Displays communication storage usage. D NET,APPLS Displays status of defined applications (ACBs). D NET,MAJNODES Displays status of VTAM activated ATCCONxx members. D NET,TOPO,LIST=SUMMARY Displays APPN topology information. D NET,CPCP Displays status of APPN CP-CP sessions. D NET,SESSIONS Displays status of subarea SSCP-SSCP sessions. D NET,CDRMS Displays status of subarea cross domain resource managers. D NET,EXIT Displays status of VTAM exit points.