To edit the NTP peer configuration:
Enter the NTP Server IP in dotted decimal notation.
Enter a KeyID from 1 to 65535.
Select 16, 32, 64, 128, 256, 512, or 1024 from the Min Poll drop-down box (the minimum time (in seconds) between Server time requests).
Select 1024, 512, 256, 128, 64, 32, or 16 from the Max Poll drop-down box (the maximum time (in seconds) between Server time requests).
Select YES or NO from the Preferred drop-down box (only one selection can be the preferred server setting).
Select NO CHANGE, ADD, MODIFY, or DELETE in the drop-down box.
Click OK to accept the changes and return to the Monitoring Configuration screen, or Cancel to return to the Monitoring Configuration screen without saving the changes.