H3C S5830V2 Series Command Reference Manual page 70

Predefined user roles
network-admin
Parameters
ip-address: IP address of the NTP server. It must be a unicast address, rather than a broadcast address,
a multicast address or the IP address of the local clock.
server-name: Host name of the NTP server, a case-insensitive string of 1 to 255 characters.
vpn-instance vpn-instance-name: Specifies the MPLS L3VPN to which the NTP server belongs, where
vpn-instance-name is a case-sensitive string of 1 to 31 characters. If the NTP server is on the public
network, do not specify this option.
authentication-keyid keyid: Specifies the key ID to be used for sending NTP messages to the NTP server,
where keyid is in the range of 1 to 4294967295. If the option is not specified, the local device and NTP
server do not authenticate each other.
priority: Specifies this NTP server as the first choice under the same condition.
source interface-type interface-number: Specifies the source interface for NTP messages. For an NTP
message the local device sends to the NTP server, the source IP address is the primary IP address of this
interface. The interface-type interface-number argument represents the interface type and number.
version number: Specifies the NTP version, where number is in the range of 1 to 4 and defaults to 4.
Usage guidelines
When you specify an NTP server for the device, the device is synchronized to the NTP server, but the NTP
server is not synchronized to the device.
If you include vpn-instance vpn-instance-name in the undo ntp-service unicast-server command, the
command removes the NTP server with the IP address of ip-address in the specified VPN. If you do not
include vpn-instance vpn-instance-name in this command, the command removes the NTP server with the
IP address of ip-address in the public network.
Examples
# Specify NTP server 10.1.1.1 for the device, and configure the device to run NTP version 4.
<Sysname> system-view
[Sysname] ntp-service unicast-server 10.1.1.1 version 4
Related commands
ntp-service authentication enable
•
• ntp-service authentication-keyid
ntp-service reliable authentication-keyid
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