H3C Technologies H3C SecPath F1000-E - Manual (Page 117)

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Configuration procedure
To specify a symmetric-passive peer on the active peer:
Step Command Remarks
1. Enter system view. system-view N/A
2. Specify a symmetric-passive
peer for the device.
ntp-service unicast-peer
[ vpn-instance vpn-instance-name ]
{ ip-address | peer-name }
[ authentication-keyid keyid |
priority | source-interface
interface-type interface-number |
version number ] *
By default, no symmetric-passive
peer is specified.
The ip-address argument must be a
unicast address, rather than a
broadcast address, a multicast
address, or the IP address of the
local clock.
Configuring the NTP broadcast mode
The broadcast server periodically sends NTP broadcast messages to the broadcast address
255.255.255.255. After receiving the messages, the device operating in NTP broadcast client mode
sends a reply and synchronizes its local clock.
For devices operating in broadcast mode, configure both the server and clients. Because an interface
needs to be specified on the broadcast server for sending NTP broadcast messages and an interface
also needs to be specified on each broadcast client for receiving broadcast messages, the NTP
broadcast mode can be configured only in the specific interface view.
Configuring a broadcast client
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
This command enters the view of
the interface for sending NTP
broadcast messages.
3. Configure the device to
operate in NTP broadcast
client mode.
ntp-service broadcast-client N/A
Configuring the broadcast server
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
This command enters the view of
the interface for sending NTP
broadcast messages.
3. Configure the device to
operate in NTP broadcast
server mode.
ntp-service broadcast-server
[ authentication-keyid keyid |
version number ]*
A broadcast server can
synchronize broadcast clients only
after its clock has been
synchronized.