4 Command Line Interface

key - An MD5 authentication key string. The key string can be up to 32 case-sensitive printable ASCII characters (no spaces).

Default Setting

None

Command Mode

Global Configuration

Command Usage

The key number specifies a key value in the NTP authentication key list. Up to 255 keys can be configured on the switch. Re-enter this command for each server you want to configure.

Note that NTP authentication key numbers and values must match on both the server and client.

NTP authentication is optional. When enabled with the ntp authenticate command, you must also configure at least one key number using this command.

Use the no form of this command without an argument to clear all authentication keys in the list.

Example

Console(config)#ntp authentication-key 45 md5 thisiskey45

Console(config)#

Related Commands

ntp authenticate (4-59)

show ntp

This command displays the current time and configuration settings for the NTP client, and indicates whether or not the local time has been properly updated.

Command Mode

Normal Exec, Privileged Exec

Command Usage

This command displays the current time, the poll interval used for sending time synchronization requests, and the current NTP mode (i.e., unicast).

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