Planning the network
The following topics describe information that will help you plan your IMS network.
Planning for network administration
As an IMS network administrator, you should plan for each of the activities listed in the following table, which also lists where you can find additional information on each activity.
Documenting network and terminal requirements
The size of your IMS installation and your terminal profile determine how you document your network requirements.
IMS terminal network
An IMS network is characterized by physical terminals and other devices. IMS supports many terminals, including display devices, printers, and remote intelligent controllers.
Designing logical terminal networks
The IMS system definition describes the characteristics and relationship of communication lines, static terminals, and logical terminals (LTERMs).
Resource modes and states
IMS keeps three types of status information for the terminals in the network.
Planning for security
To prevent unauthorized use of a terminal in the IMS network, you can use RACF® (or an equivalent product).
Planning for Fast Path terminals
To have a Fast Path-capable system, specify Fast Path support on the FPCTRL macro.
Planning for Rapid Network Reconnect (RNR)
Rapid Network Reconnect (RNR) automatically reconnects IMS VTAM® terminal sessions across outages (IMS, z/OS®, CPC, or VTAM) and subsequent IMS restarts on the same or another CPC within an IMSplex. The use of RNR can provide greater availability of VTAM sessions and eliminate the need to clean up sessions and restart IMS after an outage.
Parent topic:
IMS VTAM network administration