Administrator Guide

Parameters
key-number Specify a number for the authentication key. The range is from 1 to 65534.
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.
sha1 Specify that the authentication key is encrypted using SHA1 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, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.14(1.0) Introduced the sha1 option. Also, introduced on the S4810 and S4820T.
9.14(0.0) The trusted-key range value is from 1 to 65534.
9.12(1.0) Introduced on the S5048F–ON.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100–ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
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 configuring the ntp authentication-key command, configure the ntp trusted-key command to
complete NTP authentication.
Dell EMC Networking OS versions 8.2.1.0 and later use an encryption algorithm to store the authentication key
that is different from previous Dell EMC Networking OS versions; beginning in version 8.2.1.0, Dell EMC
Networking OS 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 Dell
EMC Networking OS 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.
System Time and Date 1531