IBM BC-203 manual Cisco Transaction Connection, Virtual Data-Link Control

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Overview of IBM Networking

Cisco Transaction Connection

Connection to Channel Interface Processor and Channel Port Adapter

Virtual Token Ring and SRB can be used to connect SNASw to the Channel Interface Processor (CIP) or Channel Port Adapter (CPA) in routers that support those interfaces.

Virtual Data-Link Control

SNASw uses Virtual Data-Link Control (VDLC) to connect to DLSw+ transport and local switching technologies. VDLC is used for a number of connectivity options, including the following two:

•Transport over DLSw+ Supported Media

•DLC Switching Support for Access to SDLC and QLLC

Transport over DLSw+ Supported Media

Using VDLC, SNASw gains full access to the DLSw+ transport facilities, including DLSw+ transport over IP networks, DLSw+ transport over direct interfaces, and DLSw+ support of direct Frame Relay encapsulation (without using IP).

DLC Switching Support for Access to SDLC and QLLC

Through VDLC, SNASw gains access to devices connecting through SDLC and QLLC. This access allows devices connecting through SDLC and QLLC access to SNASw.

Native IP Data-Link Control (HPR/IP)

SNASw support for the EE function provides direct HPR over UDP connectivity. This support is configured for any interface that has a configured IP address. HPR/IP uses the interface IP address as the source address for IP traffic originating from this node.

Cisco Transaction Connection

This section contains the following topics:

•CTRC and CICS, page 243

•CTRC and DB2, page 244

•Benefits of CTRC, page 245

The CTRC software feature provides the following functionality:

•CTRC allows Cisco routers to use the intersystem communication (ISC) protocol to provide a gateway between Customer Information Control System (CICS) clients (also known as common clients) running under Windows or UNIX on TCP/IP networks and CICS online transaction monitoring systems on IBM hosts.

•CTRC supports two interfaces to common clients: the Extended Call Interface (ECI), which lets non-CICS client programs call CICS transactions, and the Extended Presentation Interface (EPI), which lets distributed applications call CICS transactions that were originally accessed via 3270 terminals.

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-242

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Contents Overview of IBM Networking BC-203Rsrb BC-204Configuration Considerations BC-205DLSw+ BC-206DLSw Version 2 Standard DLSw StandardBC-207 DLSw+ Features Enhanced Peer-on-Demand Routing FeatureIP Multicast UDP UnicastLocal Acknowledgment BC-209BC-210 LLC2 Session Without Local AcknowledgmentBC-211 DLSw+ Support for Other SNA Features BC-212Stun Networks Stun and BstunBC-213 Stun Features BC-214BC-215 BC-216 StunBstun Features LLC2 and Sdlc ParametersBstun Networks BC-217Cisco’s Implementation of LLC2 BC-218Cisco’s Implementation of Sdlc IBM Network Media TranslationBC-219 Virtual Token Ring Concept Sdllc Media Translation FeaturesBC-220 Resolving Differences in LLC2 and Sdlc Frame Size Maintaining a Dynamic RIF CacheOther Considerations BC-221Qllc Conversion BC-222Cisco’s Implementation of Qllc Conversion BC-223Comparing Qllc Conversion to Sdllc BC-224Other Implementation Considerations BC-225RFC 1490 Routed Format for LLC2 BNN BC-226RFC 1490 Bridged Format for LLC2 BAN BC-227BC-228 NciaNcia Client/Server Model Ncia ServerBC-229 BC-230 Ncia Server Client/Server ModelAdvantages of the Client/Server Model Extended ScalabilityMigration Support BC-231BC-232 AlpsDspu and SNA Service Point BC-233BC-234 Router Acting as a Dspu ConcentratorBenefits of SNASw SNA Switching ServicesBC-235 Reduced Configuration Requirements Scalable Appn NetworksIP Infrastructure Support Network Design SimplicityBranch Extender HPR Capable SNA Routing ServicesBC-237 Enterprise Extender HPR/IP BC-238Usability Features Dynamic CP Name Generation SupportDynamic SNA BTU Size Dlur Connect-OutManagement Enhancements LAN and IP-Focused Connection Types Trap MIB Support for Advanced Network Management AwarenessToken Ring, Ethernet, and Fddi Virtual Token RingDLC Switching Support for Access to Sdlc and Qllc Cisco Transaction ConnectionVirtual Data-Link Control Native IP Data-Link Control HPR/IPCtrc and Cics BC-243Ctrc and DB2 BC-244Benefits of Ctrc Cmcc Adapter HardwareBC-245 Channel Port Adapter Channel Interface ProcessorBC-246 Differences between the CIP and CPA Escon Channel Port AdapterParallel Channel Port Adapter BC-247Cmcc Adapter Features for TCP/IP Environments Common Link Access to WorkstationSupported Environments TCP/IP OffloadCisco Multipath Channel+ IP Host BackupBC-249 Cisco SNA Cmcc Adapter Features for SNA EnvironmentsBC-250 TN3270 Server Cisco Multipath ChannelBC-251 Telnet Server Functions SNA FunctionsBC-252 BC-253 BC-254
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