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
Purpose
Command 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
Configures the device system clock to synchronize a peer
or to be synchronized by a peer (peer association).
[
no
]
ntp peer ip-address
[
version number
] [
key key-id
]
[
source interface
] [
prefer
]
Step 3
Example:
•
ip-address
: The IP address of the peer providing or
being provided, the clock synchronization.
Device(config)#
ntp peer 172.16.22.44 version 2
•
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).
[
no
]
ntp server ip-address
[
version number
] [
key key-id
]
[
source interface
] [
prefer
]
Step 4
Example:
•
ip-address
: The IP address of the time server providing
the clock synchronization.
Device(config)#
ntp server 172.16.22.44 version 2
•
number
: NTP version number. The range is 1 to 4. By
default, version 4 is selected.
System Management Configuration Guide, Cisco IOS XE Fuji 16.8.x (Catalyst 9500 Switches)
17
Administering the Device
Configuring Poll-Based NTP Associations
