Cisco Systems S/390 Enhanced Features, Improved Performance and Efficiency, Improved Management

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Enhanced Features

Enhanced Features

This section describes the new product features of Cisco IOS for S/390 release 2.0.

Improved Performance and Efficiency

•Increased throughput, reduction in CPU utilization, and inbound and outbound multiprocessing. TCP/IP processing is now multi-threaded instead of single-threaded. This is especially significant to FTP transmissions as it will let you obtain an aggregate transmission rate using up to four FTP applications running at the same time on four different CPUs. Outbound processing occurs in the dispatchable unit of the caller; Inbound processing is done on one or more SRBs to provide multitasking and proper accountability of CPU usage.

•Capability of configuring up to 25,000 tn3270 sessions.

•CLAW performance enhancements. With a Cisco 7xxx router and a Channel Interface Processor (CIP), large CLAW blocks can be used. Multiple packets are packed into one CLAW block to increase performance.

Improved Management

With Cisco IOS for S/390 release 2.0 you can dynamically:

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Activate, inactivate, define, and remove virtual IP addresses

Alter, add, or delete the real IP addresses of interfaces

Start or stop device drivers

Start, stop, add, or remove interfaces

Modify message routing/filtering at component and message suffix levels

•Update message routing—for problem diagnosis situations, message logging levels and destinations may be manipulated on the fly with operator commands

Enhanced Functionality

•The ACPEEP trace utility has been replaced by the TRACE utility that uses the MVS Component Trace facility, IPCS formatting routines, and an interactive TSO / component trace interface (TCPEEP).

•NETSTAT accepts commands from TSO, Telnet, and the operator console.

•SMF records are generated at various processing points such as connection establishment, connection termination, connection rejection, failed connection attempts, etc. for transport (TCP, UDP, Raw), Server Telnet, FTP, storage utilization, and drivers.

•Logging of tn3270 IP address-to-LU name mapping.

•The STOP command can be used for either a graceful shutdown or for an immediate shutdown.

•Messages can be selectively displayed or suppressed on a component or type basis.

•All Cisco IOS for S/390 address spaces now record trace information onto a common TRACE address space.

2Cisco IOS for S/390 Release 2.0 Release Notes

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Contents Cisco IOS for S/390 Release 2.0 Release Notes Improved Performance and Efficiency Enhanced FeaturesEnhanced Features Improved ManagementOther Enhancements Product ChangesEnhanced APIs Enhanced APIsAcpcfg Member Changes APPCFG00 DNRCFG00 IJTCFG00 SNMCFG00 TCPCFG00Product Changes Parameter Aliases Arcb Cbuf Epcb SRE Tpcb Tsqb Tucb Product ChangesProduct Changes New Features New FeaturesCisco Connection Online Cisco Connection OnlineDocumentation Product Documentation Library Product Documentation LibraryCisco IOS for S/390 Users Guide Service Startup StatementChanges to the Documentation Set Cisco IOS for S/390 Planning GuideExit Work Area Recovery Exit Register Contents Exit Recovery RoutineRecovery Exit Register Contents on EntryRefreshing Usstab Cisco IOS for S/390 System Management GuideCustomizing CA-ACF2 Version 6 or Later Syntax DescriptionMU1IUCV Usermod Correction Parameters for the Svcdump CommandProtocol Layer Events Subtypes 110 123 Descriptions Subtype DescriptionCapture of User Data in a TLI Trace Netstat RTM CommandCisco IOS for S/390 Customization Guide Tcpeep Netif OptionAppend Keyword for Lupool Statement TCP Mindev and RTO Defaults ChangedRecommendations on Setting TOS AppendLines Minutes Sync Logging Keywords Logically GroupedClass Dest Form Writer Logging ExamplesT01CF081W Cisco IOS for S/390 Prefixed MessagesT01CF080R T01CF082WCisco IOS for S/390 Unprefixed Messages and Codes ’C24C’ Instance Codes C24Cxxxx 0Exx T012TOPTDocumentation ’C245’ Instance Codes Byte code Description C25Bxxxx 1Dxx T012TERR ’C25B’ Instance CodesDocumentation Byte code Description C25Fxxxx 21xx T01PSTUBC262xxxx 6Fxx T012TPLK XC25F Instance CodesInstalling Cisco IOS for S/390 Release Installation RequirementsACF/2 Callable System Services LibraryTSO/E SAS/C Release LevelVtam Release Common Inet Sockets in OpenEditionRS6000 MVS/ESA Release 5.1 ConsiderationsHardware/Software/Microcode Compatibility Installation ProcessControl File JCL Tcpnames Installation ProcessAllocate the Data Set Names for Cisco IOS for S/390 release JobcardALLOCT00 InstsmpeHolddata SmpecumtGuest bin Cd /pub/ptf520 CustomizationParm Customization Modify Trace on SIZE256Usermod Customization Invoking Cisco IOS for S/390 ReleaseObtaining GTF Output Diagnosis and Problem ReportingDiagnosis and Problem Reporting Obtaining a Snap DumpObtaining an SVC Dump SAS/C Usage NotesObtaining a Tcpeep Obtaining JCL OutputHost SSN Global API ACPCFG00 Host StatementLogstamp Loopbuf MVS Sysdump Loopmtu Security Security CLASS, PROFILE, APPLNAME, Xsec LoggingLUPARMACPLUP00 GreetingyesnoapplLogstamp Nologstamp LUPARMAPPLUP00Application Statement Mappings Service Telnet Appl Termprof FTP GAT Smtp LPR VtamService Telnet Appl TCP Protocol ParametersTADDRUSEranges KEEPALIVETIMERnumTIB Protocoltcp KeepalivegarbagenogarbageTIB Protocoludp UDP Protocol ParametersRAW Protocol Parameters UDPArptable Lnid Loop Network ParametersTIB Protocolraw Network Medianame Network MetricChecksumhostyes Route ParametersMssoptneversubnet Netalways OffloadnoArptable ARP Driver ConfigurationLocal FlagsgnacrcsrcTracenotrace ErrorabendOptionsasyncsync Dsmesm Getmainpcore Loopnoloop Docpeocp LniclawSinglenoopdoublenoop Lniclaw DEVADDRccuuDEVADDRccuu BUFSIZE1024204330724096Trace Name Driver ConfigurationLnihypr Lnihypr HyprLnilcs and Lnilink Bcasttrunc ErrorabendArptableserver Medianame Autostart PfilterIJTCFG00 Changes Auth Logging StatementIfsparm Promptnoprompt 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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