Administrator Guide

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
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.11.1 Introduced on the Z9000.
8.2.1.0 Added options [0 | 7] for entering the authentication key.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.1.1.0 Introduced on the E-Series.
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 a version 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.
C9000 Series
Syntax
ntp broadcast client
To disable broadcast, use the no ntp broadcast client command.
Defaults Disabled.
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
1576 System Time and Date