## 2.7.4 Defining the Console (HMC part) 

The OSA-ICC function of the OSA-Express 1000Base-T feature supports TN3270 enhancements (TN3270E) and non-SNA distributed function terminal (DFT) 3270 emulation. Planning for an IBM z14 Model ZR1 OSA-ICC implementation requires input from the following disciplines within a customer organization: 

GLYPH<SM590000> IBM Z server I/O subsystem configuration 

GLYPH<SM590000> Operating system configuration 

GLYPH<SM590000> OSA-Express feature configuration 

GLYPH<SM590000> Ethernet LAN configuration 

GLYPH<SM590000> Client TN3270E configuration 

The OSA-Express feature configuration requires configuration tasks to be performed on the HMC by using the OSA Advanced Facilities task. Collect information for the following parameters before starting the configuration activities: 

GLYPH<SM590000> OSA-ICC server: Name, Host IP address, TCP port number, Gateway IP address, the netmask, the network type, and the MTU size 

GLYPH<SM590000> OSA-ICC session definitions: Channel subsystem, the MIF (LPAR) ID, Device number, LU-name, clients’ IP addre ss, clients’ DHDTO/RSP/RTO 

Note:  Consider defining multiple sessions per LPAR to allow access for a number of users at the same time. 

For an upgrade of an IBM Z server to a z14 ZR1, these definitions can be exported from the source machine by using on-board HMC facilities and imported back again after the upgrade is complete. 

For more information about the definitions, see Chapter 7, “Defining console communication” on page 143. For more information about implementation, see OSA-Express Integrated Console Controller Implementation Guide , SG24-6364. 

## 2.7.5 Support Element settings 

The SEs that are supplied with the z14 ZR1 are two appliances based on 1U x86 servers. Both units are installed at the top of the A frame. One is a primary SE and the other is the alternative SE. 

Generally, the SE settings are considered part of the physical installation of the z14 ZR1 server and not presented in this book. 

For a new z14 ZR1 server, a new range of TCP/IP addresses must be provided by the customer to the system services representative (SSR) who performs the physical installation. As an extra measure of security, provisioning a separate LAN segment for the management functions is preferred. During an upgrade from an older IBM Z server to a z14 ZR1, the current settings on the SEs should be backed up for migration purposes. 

In addition to the standard SE configuration, other parameters should be backed up, such as the API Settings. These parameters can be accessed through the Customize API Settings task on the SE. 

