Users Guide

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 congured 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 specied format.
Defaults NTP authentication is not congured 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-specic. 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
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
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 conguring the ntp authentication-key command, congure the ntp trusted-key
command to complete NTP authentication.
Dell Networking OS versions 8.2.1.0 and later use an encryption algorithm to store the authentication key
that is dierent from previous Dell Networking OS versions; beginning in version 8.2.1.0, Dell Networking OS
uses DES encryption to store the key in the startup-cong when you enter the
ntp authentication-
key command. Therefore, if your system boots with a startup-conguration from an Dell Networking OS
versions prior to 8.2.1.0 in which you have congured 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-cong to the startup-cong.
Related Commands
ntp authenticate — enables NTP authentication.
ntp trusted-key — congures a trusted key.
System Time and Date
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