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: 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: Note:  Consider defining multiple sessions per LPAR to allow access for a number of users  at the same time. 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 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 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. 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. 2.7.5 Support Element settings 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. 16  IBM z14 Model ZR1 Configuration Setup