Service Manual

ntp authentication-key
Specify a key for authenticating the NTP server.
Syntax
ntp authentication-key number md5 [0 | 7] key
Parameters
number Specify a number for the authentication key. The range is from 1 to 4294967295.
This number must be the same as the number parameter configured in the ntp
trusted-key command.
md5 Specify that the authentication key is encrypted using MD5 encryption algorithm.
0 Specify that authentication key is entered in an unencrypted format (default).
7 Specify that the authentication key is entered in DES encrypted format.
key Enter the authentication key in the previously specified format.
Defaults NTP authentication is not configured by default. If you do not specify the option [0 | 7], 0 is selected by default.
Command Modes CONFIGURATION
Command History
Version Description
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
After configuring the ntp authentication-key command, configure the ntp trusted-key command to
complete NTP authentication.
The Dell Networking OS versions 8.2.1.0 and later use an encryption algorithm to store the authentication key that
is different from previous versions; beginning in version 8.2.1.0, the system uses DES encryption to store the key in
the startup-config when you enter the
ntp authentication-key command. Therefore, if your system boots
with a startup-configuration from an versions prior to 8.2.1.0 in which you have configured ntp
authentication-key, the system cannot correctly decrypt the key, and cannot authenticate NTP packets. In
this case you must re-enter this command and save the running-config to the startup-config.
Related Commands
ntp authenticate — enables NTP authentication.
ntp trusted-key — configures a trusted key.
ntp broadcast client
Set up the interface to receive NTP broadcasts from an NTP server.
Syntax
ntp broadcast client
To disable broadcast, use the no ntp broadcast client command.
Defaults Disabled.
Command Modes INTERFACE
1218 System Time and Date