Cisco Catalyst 9400 User Manual

Procedure
PurposeCommand or Action
Enables privileged EXEC mode.enable
Step 1
Example:
Enter your password if prompted.
Device> enable
Enters global configuration mode.configure terminal
Example:
Step 2
Device# configure terminal
Enables NTP authentication.[no] ntp authenticate
Step 3
Example:
Use the no form of this command to disable
NTP authentication
Device(config)# ntp authenticate
Defines the authentication keys.[no] ntp authentication-key number {md5 |
cmac-aes-128 | hmac-sha1 | hmac-sha2-256}
value
Step 4
• Each key has a key number, a type, and a
value.
Example:
• Keys can be one of the following types:
Device(config)# ntp authentication-key
• md5: Authentication using the MD5
algorithm.
42 md5 aNiceKey
• cmac-aes-128: Authentication using
Cipher-based message authentication
codes (CMAC) with the AES-128
algorithm. The digest length is 128
bits and the key length is 16 or 32
bytes.
• hmac-sha1: Authentication using
Hash-based Message Authentication
Code (HMAC) using the SHA1 hash
function. The digest length is 128 bits
and the key length is 1 to 32 bytes.
• hmac-sha2-256: Authentication using
HMAC using the SHA2 hash
function. The digest length is 256 bits
and the key length is 1 to 32 bytes
Use the no form of this command to remove
authentication key.
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
15
Administering the Device
Configuring NTP Authentication

Cisco Catalyst 9400 Specifications

General

Product Series	Catalyst 9400 Series
Layer	Layer 2/3
Operating System	Cisco IOS XE
Switch Type	Modular
Uplink Interfaces	10 Gigabit Ethernet, 40 Gigabit Ethernet, 100 Gigabit Ethernet
Stacking	No
Form Factor	Modular Chassis
Operating Temperature	0°C to 40°C (32°F to 104°F)
Redundancy	Power supplies
Security Features	MACsec
Management	Cisco DNA Center, CLI, SNMP