3. The Choose External Time Source window opens. We select  Use NTP . Click  NEXT  to  continue (see Figure 8-46). 4. The Verify Network Time Protocol servers window opens (see Figure 8-47). You can  define up to two NTP servers by specifying the IP address or the host name (IP label) of  the NTP server by clicking the pencil icon. After IP address or host name is added, test the  connectivity to ensure that the Enabled switch icon is enabled. Then, click  TEST  CONNECTIVITY  to ensure that the NTP server is reachable. If the connectivity test is  successful, the ACT3929I window opens and the Check the Connection status row  displays  No errors . Click  NEXT  to continue. Figure 8-47 Verify Network Time Protocol servers Figure 8-46 Choose External Time Source window Chapter 8. Preparing for Sysplex and configuring Server Time Protocol  185