HPE FlexNetwork 7500 Series Command Reference Manual page 130

Network management and monitoring
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Syntax
ntp-service
vpn-instance-name ] [ authentication-keyid keyid | maxpoll maxpoll-interval | minpoll
minpoll-interval | priority | source interface-type interface-number ] *
undo ntp-service ipv6 unicast-server { server-name | ipv6-address } [ vpn-instance
vpn-instance-name ]
Default
No IPv6 NTP server is specified.
Views
System view
Predefined user roles
network-admin
mdc-admin
Parameters
server-name: Specifies an NTP server by its host name, a case-insensitive string of 1 to 253
characters.
ipv6-address: Specifies an NTP server by its IPv6 address. It must be a unicast address, rather than
a multicast address.
vpn-instance vpn-instance-name: Specifies the MPLS L3VPN instance to which the NTP server
belongs. The vpn-instance-name argument 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. The value range for the keyid argument is 1 to 4294967295. If you do not specify this option,
the local device and NTP server do not authenticate each other.
maxpoll maxpoll-interval: Specifies the maximum polling interval. The value range for the
maxpoll-interval argument is 4 to 17, to which base 2 is raised to get the interval in seconds. The
maximum polling interval is in the range of 2
maxpoll-interval argument is 6 and the default maximum polling interval is 2
minpoll minpoll-interval: Specifies the minimum polling interval. The value range for the
minpoll-interval argument is 4 to 17, to which base 2 is raised to get the interval in seconds. The
minimum polling interval is in the range of 2
minpoll-interval argument is 6 and the default minimum polling interval is 2
priority: Specifies this NTP server as the first choice under the same condition.
source interface-type interface-number: Specifies the source interface for IPv6 NTP messages. If
the specified IPv6 NTP server address is not a link local address, the source IPv6 address for IPv6
NTP messages sent by the local device to the NTP server is the IPv6 address of the specified source
interface. If the specified IPv6 NTP server address is a link local address, the IPv6 NTP messages
are sent from the specified source interface, and the source address of the messages is the link local
address of the interface. The interface-type interface-number argument represents the interface type
and number. If you do not specify an interface, the device automatically selects the source IPv6
address of IPv6 NTP messages. For more information, see RFC 3484.
Usage guidelines
When you specify an IPv6 NTP server for the device, the device is synchronized to the IPv6 NTP
server, but the IPv6 NTP server is not synchronized to the device.
To synchronize the PE to a PE or CE in a VPN instance, specify the vpn-instance
vpn-instance-name option in the command.
ipv6
unicast-server
{
server-name
|
4
17
to 2
(16 to 131072) seconds. The default value for the
4
17
to 2
(16 to 131072) seconds. The default value for the
120
ipv6-address
}
[
6
(64) seconds.
6
(64) seconds.
vpn-instance

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