H3C Technologies H3C WX5500E Series Access Controllers - Manual (Page 24)

16
Step Command Remarks
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
when its clock has been
synchronized.
Configuring the multicast mode
The multicast server periodically sends NTP multicast messages to multicast clients, which send replies
after receiving the messages and synchronize their local clocks.
Configure the NTP multicast mode on both the server and clients. The NTP multicast mode must be
configured in a specific interface view.
Configuring a multicast client
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VLAN interface view.
interface interface-type
interface-number
This command enters the view of
the interface for sending NTP
multicast messages.
3. Configure the device to
operate in NTP multicast client
mode.
ntp-service multicast-client
[ ip-address ]
N/A
Configuring the multicast server
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VLAN interface view.
interface interface-type
interface-number
This command enters the view of
the interface for sending NTP
multicast messages.
3. Configure the device to
operate in NTP multicast
server mode.
ntp-service multicast-server
[ ip-address ]
[ authentication-keyid keyid | ttl
ttl-number | version number ] *
A multicast server can synchronize
broadcast clients only when its
clock has been synchronized.
Configuring optional parameters
This section explains how to configure the optional parameters of NTP.
Specifying the source interface for NTP messages
If you specify the source interface for NTP messages, the device sets the source IP address of the NTP
messages as the primary IP address of the specified interface when sending the NTP messages.
When the device responds to an NTP request received, the source IP address of the NTP response is
always the IP address of the interface that received the NTP request.