Use the following procedure to change the NTP External Server Configuration screen:
In the IP Address text box, enter the NTP server’s IP address in dotted decimal format in a range from 0.0.0.0 to 255.255.255.255.
In the MD5 Authentication Key drop-down box, select the NTP server’s MD5 Authentication key that was setup in the screen.
In the Max Polling Interval drop-down box, select the NTP server’s packet rate, in seconds from 16 to 1024 (16 | 32 | 64 | 128 | 256 | 512 | 1024).
In the Min Polling Interval drop-down box, select the NTP server’s packet rate, in seconds from 16 to 1024 (16 | 32 | 64 | 128 | 256 | 512 | 1024).
Click one of the desired boxes to select the preferred server at the specified IP address. An X indicates the selected server.
Click OK to accept changes and return to the NTP Client/Server Configuration screen, or Cancel to return to the NTP Client/Server Configuration screen without saving changes.
Note: For all changes made in this window to take effect, you must click Apply in the screen.
Note: To minimize disruption of NTP service, make all changes to all menus first and then click Apply in the screen. Each time you click Apply, the NTP card stops service for 30 seconds as the card re-configures to its new setting.