Appendix D 363 | HP UX SNAplus2 specs

Using SNAplus2 in a High Availability Environment

SNAplus2 High Availability Features

Figure D-4

SNAplus2 on Primary and Backup Servers

Client

Client

Client

Client

Primary HP-UX Server hp_pri

Production Configuration

Node	.................HANODE
LS	HALS
Port	HAPORT
LUs	HALUO1...HALU09

LAN

Backup HP-UX Server hp_back

Development Configuration

Node	................DEVNODE
LS	DEVLS
Port	DEVPORT
LUs	DEVUO1...DEVLU09

Token Ring

3xxx

Communications

Controller

IBM

Host

Whenever the primary server is about to become unavailable (during preventative maintenance periods, for example), the SNA connectivity is switched to the backup server through the following steps:

Step 1. The SNAplus2 Port HAPORT is started on the backup server using the command snapadmin start_port, port_name=HAPORT.

Step 2. The SNAplus2 LS HALS is started on the backup server, if it is conﬁgured to be operator started, using the command snapadmin start_ls, ls_name=HALS.

Appendix D

363

Image 363

HP UX SNAplus2 manual Appendix D 363

Contents

J2740-90013 HP 9000 Networking E1098 Edition HEWLETT-PACKARD Company Legal NoticesPage Page Contents Introduction to SNAplus2 Administering SNAplus2 Deﬁning Connectivity Components Basic Conﬁguration Tasks Conﬁguring Appc Communication Conﬁguring Dependent LUs Conﬁguring User Applications Conﬁguring Passthrough Services Managing SNAplus2 Clients Managing SNAplus2 from NetView Conﬁguration Planning Worksheets Using SNAplus2 in a High Availability Environment Conﬁguring an Invokable TP Using snaptpinstall Contents Contents Organization of This Book PrefacePrerequisite Knowledge About This BookPage Definenode cd Typographic ConventionsOpcode LU name 0p1 Special Element Sample of Typography Operating System ConventionsSNAplus2 Publications Publications for Users HP-UX SNAplus2 3270/3179G Users Guide Publications for Administrators Publications for Programmers HP-UX SNAplus2 Administration Command Reference HP-UX SNAplus2 MS Programmers Guide Related PublicationsPage SNA Terms and Concepts Overview Systems Network Architecture Basic SNA Concepts Network TypesSNA Nodes Node Types in a Subarea Network Basic SNA Concepts SNA Subarea Network Node Types in a Peer Network Connectivity Application Programming Interfaces Transaction Programs Physical Units Network Accessible Units LU 6.2 for APPC, 5250 and CPI-C Logical Units LU 2 for 3270 displays Control Points Session Types Sessions Logical Unit Attributes for Sessions Multiple and Parallel Sessions Multiple and Parallel Sessions Conversations Units Communication between Transaction Programs and Logical Route Selection Modes Class of Service Appn Node Types Basic Appn Concepts Portion of a Sample Appn Network Appn End Nodes Appn Network Nodes LEN Nodes Appn Control Point Directory Services Locating ResourcesResource Names Basic Appn Concepts LEN Node Directory End Node Directory Network Node Directory Session Routing Topology and Routing Services Basic Appn Concepts Network Topology Database in Network Nodes Basic Appn Concepts Intermediate Routing Direct Connectivity Appn Network Using a Shared-Access Transport Facility Appn Connection Networks Basic Appn Concepts 11 Deﬁnitions Needed for Direct Links Using a Virtual Node Basic Appn Concepts Accessing Subarea Networks from Appn Networks Introduction to SNAplus2 Introduction to SNAplus2 What Is SNAplus2? Within a TCP/IP local area network LAN, SNAplus2 Example Conﬁgurations Standalone SNAplus2 Node That Communicates Directly with aHost SNAplus2 Nodes in an Appn Network SNAplus2 Node Providing PU Concentration and Dlur SNAplus2 Node Conﬁgured for TN Server SNAplus2 Client/Server Conﬁguration Components of SNAplus2 SNAplus2 Components Passthrough Services Node ComponentsSNA Support PU Concentration SNAplus2 Components TN Server Emulation User Applications RJE Workstation Daemon Windows client APIs see Windows APIs Appc API CPI-C API Windows APIs LUA API Client/Server Support Beneﬁts of Client/Server Operation Master Server and Backup Servers A domain with multiple SNAplus2 servers, one server holds Reference HP-UX Clients Windows Clients SNAplus2 Resources DLCs Connectivity Resources Ports Link StationsConnection Networks Local node can have an explicit link station deﬁned for its Session Resources SNAplus2 Resources Directory Information Modes and Classes of Service Domain Resources Administration Responsibilities SNAplus2 Administration Motif Administration Program Administration Tools Xsnapadmin Command-Line Administration Program Conﬁguration Files Remote Command Facility Chapter 103 NOF Applications Diagnostic Tools Simple Network Management Protocol Support Administering SNAplus2 108 Planning Worksheets Planning for SNAplus2 Conﬁguration Task Sheets Enabling and Disabling SNAplus2 on Local SystemSpecifying the Path to SNAplus2 Programs Enabling SNAplus2 Servers Snap start -s -m kernelmemorylimit -tMkernelmemorylimit Disabling SNAplus2 Servers Snap stop Invoking the Motif Administration Program Using the Motif Administration Program Resource Windows Domain Window SNAplus2 Domain Window Node Window Node Window Chapter 121 Resource Items SNAplus2 Tool Bar Tool Bar Buttons Resource Dialogs Sample Dialog Status Dialogs Sample Status Dialog Help Windows Sample Help Window Snap2adm Ascii Administration Program Using the Command-Line Administration Program Query StatusDefine Delete Using the Command-Line Administration Program 132 Basic Conﬁguration Tasks 134 Conﬁguring Client/Server Functions Addbackup DeletebackupQuerysnanet Control point name Conﬁguring the NodeNode Conﬁguration Parameters Appn support Additional Conﬁguration Control point aliasNode ID Conﬁguring Logging Setcentrallogging Setgloballogtype Setlogtype Setlogfile Tail Chapter 141 Conﬁguring Logging 142 Deﬁning Connectivity 144 Chapter 145 146 Deﬁning Ports, DLCs, and Connection Networks Port number Port, Connection Network, and DLC Conﬁguration ParametersSNA port name Adapter card number Type Additional Port Parameters for SdlcInitially active Line details Encoding 6AT &&D3 &&Q1 DT7,012345678 Dial string CN name Additional Port Parameters for X.25 QllcLocal SAP number Deﬁne on connection network Maximum active template instances Conﬁgure downstream LUs for implicit PU accessAdditional Port Parameters for Implicit PU Concentration Deﬁning Link Stations Definetypels Link Station Conﬁguration Parameters LU trafﬁc Common Link Station ParametersName Activation Poll address Additional Link Station Parameters for Sdlc Line encoding SAP number MAC address Adapter/Port Number Circuit typeChannel ID Remote X.25 address Parameters for Independent LU Trafﬁc Remote node nameRemote node type Parameters for Dependent LU Trafﬁc Local node IDRemote node ID Remote node role PU Name Deﬁning Dlur PUsDlur PU Conﬁguration Parameters Defineinternalpu Reactivate PU after failure Dlus Name 166 Conﬁguring Dependent LUs 168 LU name Deﬁning LU TypesLU Types 0-3 Conﬁguration Parameters Definelu0to3 Definelu0to3range LU numbers LU typeLU in pool Pool name Definelupool Deﬁning LU Pools Assigned LUs LU Pool Conﬁguration Parameters Deﬁning LU Pools 174 Conﬁguring Appc 176 Chapter 177 Deﬁning Local LUs LU alias Member of default poolLocal LU Conﬁguration Parameters Definelocallu 180 Deﬁning Remote Nodes Nodes SNA network name Remote Node Conﬁguration ParametersDefinedirectoryentry Definepartnerlu Defineadjacentlennode definedirectoryentry Deﬁning Partner LUs Alias Partner LU Conﬁguration ParametersPartner LU name Wildcard partner LU name Uninterpreted Name Supports parallel sessionsLocation 186 Deﬁning TPs Issue the snapadmin definetp command TP Invocation Parameters TP nameParameters are for invocation on any LU/on speciﬁc LU Route incoming Allocates to running TP Multiple instances supported Full path to TP executable ArgumentsUser ID TP Deﬁnition Parameters Group IDConversation level security required Security access list Restrict access 194 Deﬁning Modes and Classes of Service Mode Associated Purpose Name COS Name Standard Mode and COS Names Maximum session limit Mode Conﬁguration ParametersSession limits Initial session limit Receive pacing window Minimum contention winner sessionsMinimum contention loser sessions Auto-activated sessions Session timeout Maximum window sizeMaximum RU size Chapter 199 Local LU Use default LUDeﬁning CPI-C Side Information CPI-C Conﬁguration Parameters Security Partner LUMode Partner TP Password Chapter 203 Session Security Conﬁguration Parameters DefinelulupasswordConﬁguring Appc Security Conﬁguring Session Security Conversation Security Conﬁguration Parameters DefineuseridpasswordConﬁguring Conversation Security Additional Conﬁguration Users in access list Conﬁguring a Security Access ListSecurity Access List Conﬁguration Parameters Definesecurityaccesslist Chapter 207 Conﬁguring Appc Security 208 Conﬁguring User Applications 210 Chapter 211 212 Conﬁguring 3270 Users and Sessions Conﬁguring 3270 Emulator UsersDefineemulatoruser Style File Emulation User and Group Conﬁguration ParametersUser Name Group Name Style ﬁle access SessionsPermissions Conﬁguring 3270 Sessions Session Conﬁguration ParametersSession name Number of sessions Display or PrinterLU/Pool name Session base name Conﬁguring 5250 Emulator Users Conﬁguring 5250 Users Chapter 219 Run on computer Conﬁguring RJE WorkstationsRJE Workstation Conﬁguration Parameters Workstation name Unix group name Conﬁguring RJE Workstations 222 Conﬁguring Passthrough 224 Conﬁguring TN Server TN3270 client address Conﬁguring TN Server Access RecordsTN Server Access Record Conﬁguration Parameters Definetn3270access TCP/IP port number Support TN3270E Printer LU assigned Allow access to speciﬁc LUConﬁguring TN Server Association Records Display LU assigned Printer LU TN Server Association Record Conﬁguration ParametersDefinetn3270association Display LU Conﬁguring PU Concentration Downstream LU name Downstream LU Conﬁguration Parameters Allow timeout Upstream LU nameFake logon Conﬁguring Dlur 234 Managing SNAplus2 from NetView 236 Using the Host NetView Program Input n Changing the Size of the Command Input AreaOverview of RCF Command Syntax NetView Screen Display Uppercase Characters and Escape Characters Commandtext Characters to Produce Input ABcd Using Escape Characters in RCF Commands Restrictions on Administration Commands Used with Spcf Using Spcf Runcmd sp=myspname, appl=node, -a -d querylu0to3 Examples of Spcf Commands Using UCF UCF Command SyntaxRuncmd sp=spname, appl=unix, HP-UXcommand HP-UXcommand Permitted Commands Example of a UCF Command Output from HP-UX System CommandsGrep Temp ab*.c TEMP.out Runcmd sp=myspname, appl=unix, ux-cancel Canceling a Command UCF Security Using UCF 248 Managing SNAplus2 Clients End of Section 250 Client Networking Requirements Setting Up IP Port Numbers Client Networking Requirements For Windows LAN Access Timeout NOF verbs querycentrallogger or querynodeall Deﬁning Client TPs Managing Win32 Clients Disabling SNAplus2 for a Win32 Client Enabling a Win32 Client Win32 Client Security Snapwinsec domainSnapwinsec off Possible values for each Registry subkey are as follows Win32 Client Conﬁguration Conﬁguration DomainSnagroup Invokedtps Lanaccesstimeout Broadcastattemptcount Serverlosttimeout Clientstarttimeout ServersServer1 Server2-Server10 Exceptionloggingenabled AuditloggingenabledLogging Logdirectory ErrorﬁleBackuperrorﬁle Errorﬁlewrapsize Backupauditﬁle AuditﬁleAuditﬁlewrapsize Succinctaudits Succincterrors ﬂipsize APItracingﬁle1 ﬁle2 Cpic TruncationlengthAllapi Appc Csv RuiNof MSGtracing Fmi CStracing Adminmsg DatagramData Receive Send Csvtblg CSVdata Managing Win16 Clients Disabling SNAplus2 for a Win16 Client Enabling a Win16 Client Win16 Client Security Win16 Client Initialization File sna.ini Chapter 279 Snauser Chapter 281 282 Chapter 283 284 Chapter 285 286 Chapter 287 288 Chapter 289 290 Chapter 291 292 Chapter 293 End of Section 294 Managing HP-UX Clients Enabling SNAplus2 on HP-UX ClientsSnap start -t HP-UX Client Network Data File snaclnt.net Chapter 297 Server names End of Section Chapter 299 Managing HP-UX Clients 300 Conﬁguration Planning Worksheets 302 Appn End Node Node Worksheets LEN node LEN NodeYour Motif FieldValid Entry/Notes Implementation Value Your Conﬁguration server? Initially active Select if needed Line Details Type Leased line Switched outgoing Switched incomingConnectivity Worksheets Number Port number Sdlc Link Station Dialog Duplex SettingNegotiable Primary Primary multi-drop Secondary Physical link type Any Independent only Dependent only By administrator On node startup On demand Name Upstream Dlus Token Ring Appendix a 311 Motif Field Valid Entry/Notes Implementation Value Ethernet Appendix a 313 314 Fddi Independent LU trafﬁc NETNAME.CNNAME each Appendix a 317 Qllc Appendix a 319 320 Subnet ID Your Motif FieldValid Entry/NotesImplementation Value Passthrough Services Worksheets Downstream LU Dialog PU ConcentrationLU Pool Dialog Pool name LU lists TN Server TN Server Access Dialog TN Server Association Dialog Display LU Allow access to speciﬁc Appc User Application Support Worksheets Supports parallel 255 LS name Minimum contentionMotif Field Valid Entry/Notes Implementation Value Location Ebcdic characters Route incoming Restrict to speciﬁc LUMultiple instances Supported PIP allowed Select if needed User ID Up to 10 characters PasswordBasic Mapped Either Sync level 5250 Name Local LUPartner TP name LU Type 0-3 Dialog LU name 3270 Style ﬁle name Emulator User and Emulator Group Dialogs User name or group Session Dialog Single session or Multiple sessions Session nameSession type RJE Workstation Dialog Workstation name LUA 337 338 Introduction to Snmp 340 SNAplus2 Appn Snmp Subagent Appn Management Information Base MIB Conﬁguring an Invokable TP Using snaptpinstall Snaptpinstall -q -t TPname -l LUalias Snaptpinstall -aﬁlenameSnaptpinstall -r -t TPname -l LUalias Snaptpinstall -r -t TPname TPname File Format for snaptpinstall 346 Appendix C 347 348 Appendix C 349 350 Securitytype Securitytype is Service 352 Using SNAplus2 in a High Availability Environment 354 What is High Availability? 356 Appendix D 357 LU Pools for 3270, 3179G, and LUA SNAplus2 High Availability Features Figure D-2 LU Pools Client/Server Conﬁguration 360 Appendix D 361 Table D-1 Component Primary Server Backup Server Appendix D 363 364 Figure D-6 SNAplus2 environment with ServiceGuard Using SNAplus2 with MC/ServiceGuard Identifying Critical SNAplus2 Connectivity Creating the HA SNAplus2 Package Appendix D 367 SNAplus2 Package Specifying the Service Command Table D-2 Suggestions for Deﬁning the SNAplus2 PackageOpt/sna/bin/snapmon HALS. See Specifying 370 Specifying a Package IP Address Figure D-7 SNAplus2 in Client/Server Conﬁguration SNAplus2 Client/Server LAN Connections SNA LAN Connections Figure D-9 SNAplus2 Server Running TNServer TN Server LAN Connections Figure D-10 Accessing SNAplus2 Server via LAN Using the LAN to Access Standalone Servers Adding Customer Deﬁned Functions Customizing the SNAplus2 Package ControlScript Modifying the Path variable Snapadmin startls, lsname=HALS Lans Compatibility Constraints Qllc Sdlc Appendix D 381 Advanced Conﬁguration Techniques Writing Your Own SNAplus2 Service Script 384 Appendix D 385 386 Numerics Index 388 389 390 391 392 393 394 395 396 397 398