R3204P16-HP Load Balancing Module System Management Configuration Guide-6PW101

100
To do… Use the command… Remarks
Configure the device to work in
NTP multicast client mode
ntp-service multicast-client
[ ip-address ]
Required
Configuring the multicast server
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view interface interface-type interface-number
Enter the interface used to send
NTP multicast message.
Configure the device to
work in NTP multicast
server mode
ntp-service multicast-server [ ip-address ]
[ authentication-keyid keyid | ttl ttl-number
| version number ] *
Required
NOTE:
• A multicast server can synchronize broadcast clients only when its clock has been synchronized.
• You can configure up to 1024 multicast clients, among which 128 can take effect at the same time.
Configuring the local clock as a reference source
A network device can get its clock synchronized in either of the following two ways:
• Synchronized to the local clock, which works as the reference source.
• Synchronized to another device on the network in any of the four NTP operation modes previously
described.
If you configure two synchronization modes, the device selects the optimal clock as the reference source.
Follow these steps to configure the local clock as a reference source:
To do… Use the command…
Remarks
Enter system view system-view —
Configure the local clock as a
reference source
ntp-service refclock-master
[ ip-address ] [ stratum ]
Required
NOTE:
• Typically, the stratum level of the NTP server which is synchronized from an authoritative clock (such as
an atomic clock) is set to 1. This NTP server operates as the primary reference source on the network;
and other devices synchronize themselves to it. The synchronization distances between the primary
reference source and other devices on the network, namely, the number of NTP servers on the NTP
synchronization paths, determine the clock stratum levels of the devices.
• If you have confi
g
ured the local clock as a reference clock, the local device can act as a reference cloc
k
to synchronize other devices in the network. Therefore, perform this confi
g
uration with caution to avoid
clock errors of the devices in the network.
• In the ntp-service refclock-master command,
ip-address must be 127.127.1. u, w h ere u r a n g e s 0 t o 3 ,
representing the NTP process ID.