Reference v4.1.0 Instruction Manual

Network OS Command Reference 525

53-1003115-01

ntp authentication-key

Creates an authentication key to associate with the NTP server.

Synopsis ntp authentication-key key-id md5 md5-string

no ntp authentication-key key-id

Operands key-id Specifies an ID for an authentication key. The range is from 1 through

65535.

md5 md5-string Specifies a string for the MD5 message-digest algorithm. The string can be

a maximum of 15 alphanumeric characters.

Defaults None

Command Modes Global configuration mode

Description Adds an NTP authentication key (made up of a ID and an MD5 string) to a list of authentication

keys in the database.

Usage Guidelines The maximum number of configurable NTP authentication keys is five. You cannot configure a

duplicate key ID with a different key string. Use the no ntp authentication-key key-id command to

remove the specified authentication key.

Examples To create an authentication key with an ID of 33 and an MD5 string called check:

switch# configure

switch(config)# ntp authentication-key 33 md5 check