Cisco Systems manual Cisco IOS for S/390 Customization Guide, Netstat RTM Command

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Cisco IOS for S/390 Customization Guide

NETSTAT RTM Command

The NETSTAT diagnostic commands are described beginning on page 5-12. The NETSTAT RTM command can be used by a Telnet user to display a continuous activity report on all active hardware interfaces. The frequency is determined by the value in seconds, and defaults to 9 if not entered.

Permissible values are between 1 and 32767.

Once activated, the RTM command will continue to display a time-stamped connection counter, and LNI counts and rates. The display itself will appear after the specified interval in seconds, but the rate is based on a time difference between now and the last sampling. If multiple RTM commands are in effect, the rates will not always be consistently smooth.

To terminate the RTM command, press Enter.

Capture of User Data in a TLI Trace

You can use the trace facility or TCPEEP to capture user data in a TLI trace. The data is from the

TPL field DABUF.

To capture and view user data, two actions are required.

•The filter MAXTLIDATA (alias MTLIDATA or MTDATA) must specify the maximum amount of data to be captured. The default is zero; the maximum is 65,535.

For example, the following command will capture up to 100 bytes of data:

GROUPS( ( TLI,'MTDATA( 100 ) ' ) )

•The FORMAT parameter must be specified for the maximum amount of data to be displayed. You may also specify which translation to use:

—TLIDATA(nn) - mixed translation (default)

—TLIEBCDIC(nn) - EBCDIC translation

—TLIASCII(nn) - ASCII translation

For example, the following command will display up to 50 bytes of captured data:

FORMAT( TLIEBCDIC( 50 ) )

The TCPEEP command is described in the “Diagnostic Commands” chapter.

Cisco IOS for S/390 Customization Guide

The information in this section should be added to the Cisco IOS for S/390 Customization Guide.

TCPEEP NETIF Option

The default maximum data captured by the TCPEEP option NETIF is now 256 bytes of data, which includes device header, IP header, etc. A new filter option, MAXDATA (alias MDATA), allows resetting this to a maximum of 65,535.

This is an example of the usage of the MAXDATA (MDATA) filter option:

GROUPS( (NETIF,'MDATA( 512 ) ' ) )

This command will capture up to 512 bytes of data. The FORMAT options DATA(nn),

EBCDIC(nn), and ASCII(nn) still limit what is seen.

Cisco IOS for S/390 Release 2.0 Release Notes 15

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Contents Cisco IOS for S/390 Release 2.0 Release Notes Improved Management Enhanced FeaturesEnhanced Features Improved Performance and EfficiencyEnhanced APIs Product ChangesEnhanced APIs Other EnhancementsAPPCFG00 DNRCFG00 IJTCFG00 SNMCFG00 TCPCFG00 Product Changes Parameter AliasesAcpcfg Member Changes Product Changes Arcb Cbuf Epcb SRE Tpcb Tsqb TucbProduct Changes New Features New FeaturesCisco Connection Online DocumentationCisco Connection Online Product Documentation Library Product Documentation LibraryCisco IOS for S/390 Planning Guide Service Startup StatementChanges to the Documentation Set Cisco IOS for S/390 Users GuideExit Work Area Register Contents on Entry Exit Recovery RoutineRecovery Exit Recovery Exit Register ContentsSyntax Description Cisco IOS for S/390 System Management GuideCustomizing CA-ACF2 Version 6 or Later Refreshing UsstabSubtype Description Parameters for the Svcdump CommandProtocol Layer Events Subtypes 110 123 Descriptions MU1IUCV Usermod CorrectionTcpeep Netif Option Netstat RTM CommandCisco IOS for S/390 Customization Guide Capture of User Data in a TLI TraceAppend TCP Mindev and RTO Defaults ChangedRecommendations on Setting TOS Append Keyword for Lupool StatementLogging Examples Logging Keywords Logically GroupedClass Dest Form Writer Lines Minutes SyncT01CF082W Cisco IOS for S/390 Prefixed MessagesT01CF080R T01CF081WCisco IOS for S/390 Unprefixed Messages and Codes C24Cxxxx 0Exx T012TOPT Documentation ’C245’ Instance Codes Byte code Description’C24C’ Instance Codes ’C25B’ Instance Codes C25Bxxxx 1Dxx T012TERRXC25F Instance Codes C25Fxxxx 21xx T01PSTUBC262xxxx 6Fxx T012TPLK Documentation Byte code DescriptionInstallation Requirements Installing Cisco IOS for S/390 ReleaseSAS/C Release Level Callable System Services LibraryTSO/E ACF/2MVS/ESA Release 5.1 Considerations Common Inet Sockets in OpenEditionRS6000 Vtam ReleaseInstallation Process Control File JCLHardware/Software/Microcode Compatibility Jobcard Installation ProcessAllocate the Data Set Names for Cisco IOS for S/390 release TcpnamesInstsmpe ALLOCT00Smpecumt HolddataCustomization Guest bin Cd /pub/ptf520Modify Trace on SIZE256 Parm CustomizationInvoking Cisco IOS for S/390 Release Usermod CustomizationObtaining a Snap Dump Diagnosis and Problem ReportingDiagnosis and Problem Reporting Obtaining GTF OutputObtaining JCL Output SAS/C Usage NotesObtaining a Tcpeep Obtaining an SVC DumpSecurity Security CLASS, PROFILE, APPLNAME, Xsec Logging ACPCFG00 Host StatementLogstamp Loopbuf MVS Sysdump Loopmtu Host SSN Global APILUPARMAPPLUP00 GreetingyesnoapplLogstamp Nologstamp LUPARMACPLUP00TCP Protocol Parameters Service Telnet Appl Termprof FTP GAT Smtp LPR VtamService Telnet Appl Application Statement MappingsKeepalivegarbagenogarbage KEEPALIVETIMERnumTIB Protocoltcp TADDRUSErangesUDP UDP Protocol ParametersRAW Protocol Parameters TIB ProtocoludpNetwork Medianame Network Metric Network ParametersTIB Protocolraw Arptable Lnid LoopOffloadno Route ParametersMssoptneversubnet Netalways ChecksumhostyesFlagsgnacrcsrc Driver ConfigurationLocal Arptable ARPLniclaw ErrorabendOptionsasyncsync Dsmesm Getmainpcore Loopnoloop Docpeocp TracenotraceBUFSIZE1024204330724096 Lniclaw DEVADDRccuuDEVADDRccuu SinglenoopdoublenoopLnihypr Hypr Driver ConfigurationLnihypr Trace NameMedianame Autostart Pfilter Bcasttrunc ErrorabendArptableserver Lnilcs and LnilinkIJTCFG00 Changes Logging Statement Ifsparm PromptnopromptAuth Logging Statement Cisco IOS for S/390 Release 2.0 Release Notes

S/390 specifications

Cisco Systems S/390, also known as IBM's S/390 architecture, is a revolutionary mainframe computing solution that has significantly impacted enterprise computing since its introduction. Though primarily associated with IBM, its integration with Cisco Systems technologies has fostered enhanced networking capabilities, creating a robust platform for organizations to leverage.

One of the most notable features of the S/390 architecture is its scalability. The system is designed to manage workloads efficiently, enabling organizations to scale their operations seamlessly as their requirements grow. This architecture supports an extensive range of applications, from transaction processing to complex data analysis, making it suitable for diverse industries.

The S/390 systems are known for their reliability and resilience. With advanced error detection and correction mechanisms, the architecture minimizes downtime, ensuring that mission-critical applications remain operational. The mainframe's design accommodates redundancy and fault tolerance, reinforcing its reputation as a dependable computing solution.

Moreover, security is a core characteristic of the S/390 infrastructure. It incorporates various security features, such as encryption and robust access control mechanisms, to safeguard sensitive data against unauthorized access and cyber threats. This level of security is particularly critical for industries such as finance, healthcare, and government, where data protection is paramount.

The integration of Cisco networking technologies with the S/390 architecture brings enhanced connectivity and streamlined communication capabilities. Cisco’s advanced routing, switching, and security solutions bolster the mainframe's communication prowess, enabling organizations to create seamless, high-performance networks. This ensures that data flows efficiently between the mainframe and other networked devices.

Additionally, S/390 supports an array of middleware solutions, facilitating better interoperability with modern applications and cloud services. Organizations can take advantage of this flexibility to leverage existing investments in technology while embracing innovative solutions.

In summary, Cisco Systems S/390 embodies a potent combination of scalability, reliability, security, and advanced networking features. Its architecture serves as a cornerstone for enterprise computing, allowing organizations to meet their evolving business needs while maintaining high-performance standards. As businesses increasingly rely on data-driven decision-making, S/390 remains a critical asset for organizations striving for efficiency and innovation in their operations.
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