Cisco Catalyst 9500 Manual page 31

Administering the Device
SUMMARY STEPS
1. enable
2. configure terminal
3. [no] ntp peer ip-address [version number] [key key-id] [source interface] [prefer]
4. [no] ntp server ip-address [version number] [key key-id] [source interface] [prefer]
5. end
DETAILED STEPS
Command or Action
Step 1
enable
Example:
Device> enable
Step 2 configure terminal
Example:
Device# configure terminal
Step 3
[no] ntp peer ip-address [version number] [key key-id]
[source interface] [prefer]
Example:
Device(config)# ntp peer 172.16.22.44 version 2
Step 4 [no] ntp server ip-address [version number] [key key-id]
[source interface] [prefer]
Example:
Device(config)# ntp server 172.16.22.44 version 2
System Management Configuration Guide, Cisco IOS XE Fuji 16.8.x (Catalyst 9500 Switches)
Configuring Poll-Based NTP Associations
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
Enters global configuration mode.
Configures the device system clock to synchronize a peer
or to be synchronized by a peer (peer association).
• ip-address: The IP address of the peer providing or
being provided, the clock synchronization.
• number: NTP version number. The range is 1 to 4. By
default, version 4 is selected.
• key-id: Authentication key defined with the ntp
authentication-key command.
• interface: The interface from which to pick the IP
source address. By default, the source IP address is
taken from the outgoing interface.
• prefer: Sets this peer as the preferred one that provides
synchronization. This keyword reduces switching back
and forth between peers.
Use the no form of this command to remove a peer
association.
Configures the device's system clock to be synchronized
by a time server (server association).
• ip-address: The IP address of the time server providing
the clock synchronization.
• number: NTP version number. The range is 1 to 4. By
default, version 4 is selected.
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