Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 1047

7 Specify that the authentication key will be 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 8.3.5.0 Version 8.2.1.0 Version 7.6.1.0 Version 7.5.1.0 pre-Version 6.1.1.0 Introduced on S55 Added options [0 | 7] for entering authentication key. Support added for S-Series Support added for C-Series Introduced for E-Series Usage After configuring the ntp authentication-key command, configure the ntp trusted-key command to Information complete NTP authentication. FTOS versions 8.2.1.0 and later use an encryption algorithm to store the authentication key that is different from previous FTOS versions; beginning in version 8.2.1.0, FTOS uses DES encryption to store the key in the startup-config when you enter the command ntp authentication-key. Therefore, if your system boots with a startup-configuration from an FTOS 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 ntp trusted-key Enables NTP authentication. Configure a trusted key. ntp broadcast client c e s Set up the interface to receive NTP broadcasts from a Dell Force10 switch/router acting as an NTP server. Syntax ntp broadcast client To disable broadcast, enter no ntp broadcast client. Defaults Disabled Command Modes INTERFACE Command History Version 8.3.5.0 Version 7.6.1.0 Version 7.5.1.0 pre-Version 6.1.1.0 Introduced on S55 Support added for S-Series Support added for C-Series Introduced for E-Series Time and Network Time Protocol (NTP) | 1047