Before you can configure NTP, you must do the following:
Configure an IP interface on the Passport 8000 Series switch and ensure that the NTP server is reachable through this interface. For instructions, see Configuring IP Routing Operations.
Make sure that the Real Time Clock is present on the CPU board.
Note:
NTP server MD5 authentication does not support passwords (keys) that start with a special character or that contain a space between characters.