I-Data ReRouter instruction manual 2 TCP/IP KeepAlive configuration on OS/2

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Installation and Setup ida ReRouter

4.3.2TCP/IP KeepAlive configuration on OS/2

∙OS/2 2.0 with APAR IR28716 fix must be installed.

∙TCP/IP 2.0 with CSD UN64092 or later must be installed.

∙The TCP/IP "inetcfg" command can be used to configure the "KEEPALIVE" parameter.

inetcfg KEEPALIVE=nnn

where nnn is the number of minutes a TCP connection must remain inactive before TCP generates a KEEPALIVE transmission for an application that requests them.

The default is 120 minutes.

The inetcfg command must be run each time the OS/2 system is started. Adding the inetcfg command to \tcpip\bin\tcpstart.cmd is a convenient way to automate this step.

For example, adding

inetcfg KEEPALIVE=4

to \tcpip\bin\tcpstart.cmd causes TCP to send a KEEPALIVE transmission if a TCP connection has been inactive for 4 minutes and the application requested KEEPALIVE transmissions, as OS/2 now does. OS/2 recommends this TCP configuration setting for customers who use TCP/IP-attached printers and the device.

If the KEEPALIVE transmission is not acknowledged, the TCP will attemt to re-connect up to 9 times. The interval between these attempts is fixed but short.

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Contents Data Electronic Documentation Main Office January PrefaceToken Ring Ethernet Related ManualsTable of Contents Table of Contents Ida ReRouter Introduction What is the ida ReRouter?Ida ReRouter in a Token Ring environment With connections to PCL 4/5 printers Product FeaturesIdaRCtrl Quick Guide D10276 Items Supplied with ida ReRouterPersonal Computer Requirements Product RequirementsHost System Requirements Type a setup Installation of ida ReRouterInstallation and Setup ida ReRouter Setup of ida ReRouter Description Route nameStatus Verify NewChange DeleteProduct Information DeActivate RouteRefresh View LogEnter Description Defining a new routeCommunications Manager Enter Connect TimeoutValidation must be made in the configuration program Deleting a route Additional routesChanging a route Support for KeepAlive to OS/2 Keep Alive Function2 TCP/IP KeepAlive configuration on OS/2 1 PSF/MVS printer definition and startup procedure Configuration of S/370 NetworksConfiguration Examples for MVS and VM LUNAME=IDSNCEP0 Disintv 2 PSF/VM PDM definitionPSS4 3 PSS/MVS printer definition and startup procedure4 PSS/VM PDM definition Fssuser = PSS1 Userid OFF Virtual Machine Printing PSS printer profile using SNA and TCP/IP attachment PSFAPP11 Host Vtam definitionMode Table Local Remote Prompts Parameter and values Parentheses Configuration of AS/400 NetworksCreating Appc device description Network Creating Printer Device DescriptionValue must be unique within Remote Network Identifier DKIDTN01 Updating Appn Remote Location ListSNA connections only Remote Location Name RER1Control Point Network Identifier Remote Control Point NameLocal Location Name S4450327 Qlus Sample Controller DefinitionFor SNA connection Workstation ConfigurationCommunications Manager/2 for S/370-390 and AS/400 Configuring Data Link Control DLC profiles Changing configuration fileCommunications Manager Setup Select ConfigureSet Node type Configuring SNA local node characteristicsConfiguring SNA connection For AS/400 host connection For S/370 host connectionConnections List Configuring SNA featuresPeer node connection normally AS/400 3a. Select Activate at startupIda ReRouter SNA Features / Partner LU Select Partner LUsCreating a local LU LU Alias must be the same as definedFor Ipds connection to PSF/370-390 and PSF/400 AS/400 onlyCreating a transaction program definition Communications Manager Profile List Sheet SNA Features ListFor Icds connection to ida PSS Additional TP ParametersCommunications Manager Configuration Def First device ida 913-03 Token Ring 2 S/370 Network Configuration WorksheetSecond device ida PS First device ida 913-03 Token Ring Part 3 AS/400 Network Configuration WorksheetAPPCDev Printer Dev Configuration List Second device ida PS Part Partner LU Profile Explanation to Configuration Worksheets TP name Node ID370 S/390 AS/400Local LU address Local LU nameLocal LU alias This parameter is for AS/400 only This parameter is for S/370 S/390 onlyTCP/IP LapsRouting Ping Testing Connection to Remote DevicePing Function Ping function failed Ping function succeededLog Files Action Problem DeterminationError Syntax ROUT0106E Appc allocation error ROUT0035E Cannot open configuration fileROUT0052E Configuration error for entry ROUT0105E Appc communication errorROUT0110E Invalid Appc opcode ROUT0111E Appc error opcode ... Primary rc Secondary rcROUT0602E Invalid connect timeout value ROUT0603E TCP/IP socket errorProblem Determination ida ReRouter ROUT0613I Printer is not ready IRQ on remote printer ROUT0611I Trace enabledROUT0612W Swiddef file error ROUT0802E Timer handling error ROUT0700E Internal software errorROUT0800E Semaphore handling error ROUT0801E Named Pipe handling errorTrace ROUT0803E Thread handling errorPPD/PPR List of AbbreviationsSyntax Appendix a Keyword DefinitionsRoutename Keywordipaddress Appendix BFill-InConfigurationWorksheet WORK-STATION PSF Vtam NCP IDA Fill-In Configuration Worksheet for AS/400 Communications Mainframe environment Appendix C i-data ProductsMidrange environment Readers Comments