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Usage guidelines
When you specify a passive peer for the device, the device and its passive peer can be synchronized
to each other. If their clocks are in synchronized state, the clock with a high stratum level is
synchronized to the clock with a lower stratum level.
To synchronize the PE to a PE or CE in a VPN, provide
vpn-instance vpn-instance-name
in your
command.
If you include
vpn-instance vpn-instance-name
in the
undo ntp-service unicast-peer
command,
the command removes the symmetric-passive peer with the IP address of
ip-address
in the specified
VPN. If you do not include
vpn-instance vpn-instance-name
in the command, the command
removes the symmetric-passive peer with the IP address of
ip-address
in the public network.
Examples
# Specify the device with the IP address of 10.1.1.1 as the symmetric-passive peer of the device,
configure the device to run NTP version 4, and specify the source interface of NTP messages as
VLAN-interface 1.
<Sysname> system-view
[Sysname] ntp-service unicast-peer 10.1.1.1 version 4 source-interface vlan-interface 1
Related commands
•
ntp-service
authentication
enable
•
ntp-service
authentication-keyid
•
ntp-service reliable authentication-keyid
ntp-service unicast-server
Use
ntp-service
unicast-server
to specify an NTP server for the device.
Use
undo ntp-service
unicast-server
to remove an NTP server specified for the device.
Syntax
ntp-service
unicast-server
{
server-name
|
ip-address
} [
vpn-instance vpn-instance-name
]
[
authentication-keyid
keyid
|
priority
|
source
interface-type interface-number
|
version
number
]
*
undo
ntp-service
unicast-server
{
server-name
|
ip-address
} [
vpn-instance vpn-instance-name
]
Default
No NTP server is specified for the device.
Views
System view
Predefined user roles
network-admin
Parameters
server-name
: Specifies the host name of the NTP server, a case-insensitive string of 1 to 253
characters.
ip-address
: Specifies the 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.
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.
