IBM BC-203 manual Cmcc Adapter Hardware, Benefits of Ctrc, BC-245

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Overview of IBM Networking

CMCC Adapter Hardware

For a TCP/IP host connection, the router with CTRC routes the DRDA packets over TCP/IP without protocol changes. To use this TCP/IP passthrough feature of CTRC, the host database version must support direct TCP/IP access. Figure 111 illustrates such a configuration.

Figure 111 Cisco Router Configured with the CTRC Feature for DB2 Communications (TCP/IP Host Network)

ODBC client

TCP/IP CTRC TCP/IP

DRDA server

RDBMS

27133

DB2 database

When configured for DB2 communications on a router, the CTRC feature enables desktop applications to access data in remote databases located on IBM hosts. CTRC receives database access messages from the client over a TCP/IP link. CTRC either converts the messages to SNA and transmits them to the host using APPC services provided by the Cisco SNA Switching Services, or routes the client messages to the TCP/IP-enabled host without protocol changes.

Benefits of CTRC

CTRC provides TCP/IP end-users and servers with fast, reliable, and secure access to IBM DB2 databases using the SNA protocol. CTRC replaces expensive and hard to manage UNIX and NT gateways for database access.

CTRC lets Windows or UNIX client applications call CICS transactions without requiring changes to the client or host software.

In addition, CTRC provides Cisco 7200 and 7500 series routers with the functionality previously available in CDBC, which gives ODBC client applications access to data in DB2 databases.

CMCC Adapter Hardware

A CMCC adapter is installed in a Cisco router to provide IBM channel attachment from the router to a mainframe host. The Cisco family of CMCC adapters consists of two basic types of adapters:

•Channel Interface Processor (CIP)—Installed on Cisco 7000 with RSP7000 and Cisco 7500 series routers

•Channel Port Adapter (CPA)—Installed on Cisco 7200 series routers

Each type of adapter (CIP or CPA) supports both ESCON and parallel channel attachment to the host and can eliminate the need for a separate FEP.

All CMCC adapters support the full range of channel software applications available in the Cisco IOS software including support for the Common Link Access to Workstation (CLAW) protocol, TCP/IP offload, IP host backup, Cisco SNA (CSNA), Cisco Multipath Channel (CMPC), Cisco Multipath Channel+ (CMPC+), and the TN3270 server.

Figure 112 shows the type of channel connections and environments supported by the CMCC adapters.

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-245

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Contents BC-203 Overview of IBM NetworkingBC-204 RsrbBC-205 Configuration ConsiderationsBC-206 DLSw+DLSw Version 2 Standard DLSw StandardBC-207 UDP Unicast DLSw+ FeaturesEnhanced Peer-on-Demand Routing Feature IP MulticastBC-209 Local AcknowledgmentLLC2 Session Without Local Acknowledgment BC-210BC-211 BC-212 DLSw+ Support for Other SNA FeaturesStun Networks Stun and BstunBC-213 BC-214 Stun FeaturesBC-215 Stun BC-216BC-217 Bstun FeaturesLLC2 and Sdlc Parameters Bstun NetworksBC-218 Cisco’s Implementation of LLC2Cisco’s Implementation of Sdlc IBM Network Media TranslationBC-219 Virtual Token Ring Concept Sdllc Media Translation FeaturesBC-220 BC-221 Resolving Differences in LLC2 and Sdlc Frame SizeMaintaining a Dynamic RIF Cache Other ConsiderationsBC-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-228Ncia Client/Server Model Ncia ServerBC-229 Ncia Server Client/Server Model BC-230BC-231 Advantages of the Client/Server ModelExtended Scalability Migration SupportAlps BC-232BC-233 Dspu and SNA Service PointRouter Acting as a Dspu Concentrator BC-234Benefits of SNASw SNA Switching ServicesBC-235 Network Design Simplicity Reduced Configuration RequirementsScalable Appn Networks IP Infrastructure SupportBranch Extender HPR Capable SNA Routing ServicesBC-237 BC-238 Enterprise Extender HPR/IPDlur Connect-Out Usability FeaturesDynamic CP Name Generation Support Dynamic SNA BTU SizeManagement Enhancements Virtual Token Ring LAN and IP-Focused Connection TypesTrap MIB Support for Advanced Network Management Awareness Token Ring, Ethernet, and FddiNative IP Data-Link Control HPR/IP DLC Switching Support for Access to Sdlc and QllcCisco Transaction Connection Virtual Data-Link ControlBC-243 Ctrc and CicsBC-244 Ctrc and DB2Benefits of Ctrc Cmcc Adapter HardwareBC-245 Channel Port Adapter Channel Interface ProcessorBC-246 BC-247 Differences between the CIP and CPAEscon Channel Port Adapter Parallel Channel Port AdapterTCP/IP Offload Cmcc Adapter Features for TCP/IP EnvironmentsCommon Link Access to Workstation Supported EnvironmentsCisco 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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