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This chapter introduces the features of the mainframe application. This chapter includes the following main sections:
The CiscoWorks Blue mainframe application acts solely as a server to provide Systems Network Architecture (SNA) resource information to the CiscoWorks Blue Maps and SNA View applications on workstations. There are no end-user functions provided.
For information about how the SNA information is used at the workstation, see the CiscoWorks Blue Maps and SNA View Workstation Installation and Administration Guide or the CiscoWorks Blue Maps and SNA View User Guide.
The CiscoWorks Blue Maps and SNA View products obtain SNA physical unit (PU) and logical unit (LU) resource information from VTAM at a mainframe computer and correlate that information with the Cisco routers that are associated with the PUs and LUs. Maps and SNA View consist of two components: a Multiple Virtual Storage (MVS) system mainframe application and a UNIX workstation application (for Maps and SNA View).
The mainframe component provides the SNA PU and LU information to the workstation program. It runs as a started task under OS/390 (MVS/Enterprise Systems Architecture).
The workstation component obtains the PU and LU information from the mainframe and stores it in a database at the workstation.
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Note PUs connected via the remote source route bridging (RSRB) protocol and a CIP or 3172 connection to the mainframe will not benefit from the correlation feature. This means that the Maps and SNA View applications cannot determine on which routers these PUs are dependent for connectivity to the mainframe. However, the IBM APAR OW36070 is available that allows Maps and SNA View to support switched PUs using these types of connections. |
The workstation program provides the user with PU and LU information. To provide these services to the workstation user, the mainframe application uses the interfaces described in the following sections.
When you install the mainframe application, you get a fully functional Virtual Telecommunications Access Method (VTAM) exchange identification (XID) configuration services exit routine. For more information, see the "Updating MVS and VTAM" section in "Updating the Mainframe Application Software."
The mainframe application provides a set of initialization parameter cards with which you customize the mainframe application. For more information, see the "Updating the Mainframe Configuration File (NSPPARM)" section in the "Updating the Mainframe Application Software."
The mainframe application provides a set of mainframe commands with which you configure and monitor the mainframe environment. You can start, stop, and display the status of the mainframe subtasks. For more information, see the "Issuing Mainframe Commands" section in "Using the Mainframe Application."
The mainframe application includes a series of subtasks that run on the mainframe. These subtasks provide connections to the workstations and PU/LU discovery and monitoring. For more information, see the "Mainframe Subtasks" section in "Using the Mainframe Application."
Posted: Thu Jun 19 18:33:46 PDT 2003
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