3. Select  Add Server  from the  Select Action  list (see Figure 8-5). 4. The Add Network Time Server window opens. In this window, you can set the values in the  following fields: – Enter the time server host name or IP address – Authentication Selection This mandatory field is the IP address or host name of NTP server. In our example  configuration,  1.pool.ntp.org  is the NTP server. You can define this field if you want to use the NTP Broadband Authentication Support  function. If you do not use the NTP Broadband Authentication Support function, select  None . Tip:  The use of a host name requires you to customize and enable Domain Name Services  on the HMC. To complete this task, click  Customize Network Setting Name services in the Hardware Management Console Setting Work Area. 5. Click  OK  when you are finished making your selections (see Figure 8-6). Figure 8-6 Add Network Time Server window Figure 8-5 Selecting the Add Server option 164  IBM z14 Model ZR1 Configuration Setup