IBM BC-203 manual Ctrc and Cics, BC-243

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Overview of IBM Networking

Cisco Transaction Connection

•CTRC supports the ability to configure routes for CICS transaction. Each transaction can be routed to a specific CICS region.

•In addition to its CICS-related functionality, CTRC includes the feature previously known as Cisco Database Connection (CDBC), which allows Cisco routers to use IBM's distributed relational database architecture (DRDA) protocol to provide a gateway between client workstations running Open DataBase Connectivity (ODBC) compliant applications on TCP/IP networks and IBM DB2 databases on SNA networks. ODBC is a call-level interface developed by Microsoft Corporation that allows a single application to access database management systems from different vendors using a single interface. SNA is a large, complex, feature-rich network architecture developed by IBM.

•CTRC adds support for TCP/IP passthrough, allowing the use of a TCP/IP network, rather than a SNA network, between a Cisco router and a DB2 database if the database version supports direct TCP/IP access.

•To match functionality provided in DRDA over TCP/IP, CTRC adds support for Password Expiration Management (PEM) in SNA networks where PEM is supported.

•CTRC supports the following MIBs:

–CISCO-DATABASE-CONNECTION-MIB.my - 93

–CISCO-TRANSACTION-CONNECTION-MIB.my - 144

For descriptions of supported MIBs and how to use MIBs, see the Cisco MIB web site on CCO at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.

CTRC and CICS

CTRC is a Cisco IOS software feature that is available in two environments:

•CICS

•DB2

When a router is configured to use CTRC for communications with CICS systems, the router converts ISC packets over TCP/IP to ISC packets over Advanced Program-to-Program Communications (APPC) LU 6.2 and then routes them to the appropriate CICS region. CTRC converts CICS client messages received via TCP/IP to SNA messages and uses Cisco SNA Switching Services to transmit them to the host.

CTRC runs as a TCP/IP daemon on the router, accepting ISC client connections over TCP/IP. When a client connects to a CICS region on an IBM mainframe host, CTRC allocates an APPC conversation over SNA to an IBM server and acts as a gateway between ISC over TCP/IP and ISC over APPC.

Figure 109 illustrates how CTRC lets CICS client applications on TCP/IP networks interact with CICS transaction monitoring systems on IBM hosts.

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-243

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Contents BC-203 Overview of IBM NetworkingBC-204 RsrbBC-205 Configuration ConsiderationsBC-206 DLSw+BC-207 DLSw StandardDLSw Version 2 Standard Enhanced Peer-on-Demand Routing Feature DLSw+ FeaturesIP Multicast UDP UnicastBC-209 Local AcknowledgmentLLC2 Session Without Local Acknowledgment BC-210BC-211 BC-212 DLSw+ Support for Other SNA FeaturesBC-213 Stun and BstunStun Networks BC-214 Stun FeaturesBC-215 Stun BC-216LLC2 and Sdlc Parameters Bstun FeaturesBstun Networks BC-217BC-218 Cisco’s Implementation of LLC2BC-219 IBM Network Media TranslationCisco’s Implementation of Sdlc BC-220 Sdllc Media Translation FeaturesVirtual Token Ring Concept Maintaining a Dynamic RIF Cache Resolving Differences in LLC2 and Sdlc Frame SizeOther Considerations BC-221BC-222 Qllc ConversionBC-223 Cisco’s Implementation of Qllc ConversionBC-224 Comparing Qllc Conversion to SdllcBC-225 Other Implementation ConsiderationsBC-226 RFC 1490 Routed Format for LLC2 BNNBC-227 RFC 1490 Bridged Format for LLC2 BANNcia BC-228BC-229 Ncia ServerNcia Client/Server Model Ncia Server Client/Server Model BC-230Extended Scalability Advantages of the Client/Server ModelMigration Support BC-231Alps BC-232BC-233 Dspu and SNA Service PointRouter Acting as a Dspu Concentrator BC-234BC-235 SNA Switching ServicesBenefits of SNASw Scalable Appn Networks Reduced Configuration RequirementsIP Infrastructure Support Network Design SimplicityBC-237 HPR Capable SNA Routing ServicesBranch Extender BC-238 Enterprise Extender HPR/IPDynamic CP Name Generation Support Usability FeaturesDynamic SNA BTU Size Dlur Connect-OutManagement Enhancements Trap MIB Support for Advanced Network Management Awareness LAN and IP-Focused Connection TypesToken Ring, Ethernet, and Fddi Virtual Token RingCisco Transaction Connection DLC Switching Support for Access to Sdlc and QllcVirtual Data-Link Control Native IP Data-Link Control HPR/IPBC-243 Ctrc and CicsBC-244 Ctrc and DB2BC-245 Cmcc Adapter HardwareBenefits of Ctrc BC-246 Channel Interface ProcessorChannel Port Adapter Escon Channel Port Adapter Differences between the CIP and CPAParallel Channel Port Adapter BC-247Common Link Access to Workstation Cmcc Adapter Features for TCP/IP EnvironmentsSupported Environments TCP/IP OffloadBC-249 IP Host BackupCisco Multipath Channel+ BC-250 Cmcc Adapter Features for SNA EnvironmentsCisco SNA BC-251 Cisco Multipath ChannelTN3270 Server BC-252 SNA FunctionsTelnet Server Functions BC-253 BC-254
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