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

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Configuring NTP client/server mode
For devices working in client/server mode, make configurations on the clients.
Follow these steps to specify an NTP server on the client:
To do… Use the command…
Remarks
Enter system view system-view —
Specify an NTP
server for the device
ntp-service unicast-server { ip-address | server-name }
[ authentication-keyid keyid | priority | source-interface
interface-type interface-number | version number ] *
Required
No NTP server is
specified by default.
NOTE:
• In the ntp-service unicast-server command, ip-address must be a unicast address, rather than a
broadcast address, a multicast address or the IP address of the local clock.
• When the source interface for NTP messages is specified by the source-interface keyword, the source IP
address of the NTP messages is configured as the primary IP address of the specified interface.
• A device can act as a server to synchronize the clock of other devices only after its clock has been
synchronized. If the clock of a server has a stratum level hi
g
her than or equal to that of a client’s clock,
the client will not synchronize its clock to that server’s clock.
• You can configure multiple servers by repeating the ntp-service unicast-server command. The clients
will select the optimal reference source.
Configuring the NTP symmetric peers mode
For devices working in symmetric mode, specify a symmetric-passive peer on a symmetric-active peer.
Following these steps to specify a symmetric-passive peer on the active peer:
To do… Use the command…
Remarks
Enter system view system-view —
Specify a
symmetric-passive
peer for the device
ntp-service unicast-peer { ip-address | peer-name }
[ authentication-keyid keyid | priority |
source-interface interface-type interface-number |
version number ] *
Required
No symmetric-passive peer
is specified by default.
NOTE:
• In symmetric mode, use the ntp-service refclock-master command or any NTP confi
g
uration command
in Configuring the operation modes of NTP t
o enable NTP; otherwise, a symmetric-passive peer will
not process NTP messages from a symmetric-active peer.
• In the ntp-service unicast-peer command,
ip-address must be a unicast address, rather than a
broadcast address, a multicast address or the IP address of the local clock.
• When the source interface for NTP messages is specified by the source-interface keyword, the source IP
address of the NTP messages is configured as the primary IP address of the specified interface.
• Typically, at least one of the symmetric-active and symmetric-passive peers has been synchronized;
otherwise the clock synchronization will not proceed.
• You can configure multiple symmetric-passive peers by repeating the ntp-service unicast-peer
command.