Configuring ntp multicast mode, Refer to, Table 1-6 – H3C Technologies H3C S3100 Series Switches User Manual
Page 699
1-9
Operation
Command
Description
Configure the switch to work in the
NTP broadcast server mode
ntp-service broadcast-server
[ authentication-keyid key-id |
version number ]*
Required
Not configured by default.
Configuring a switch to work in the NTP broadcast client mode
Table 1-6 Configure a switch to work in the NTP broadcast client mode
Operation
Command
Description
Enter system view
system-view
—
Enter VLAN interface view
interface Vlan-interface vlan-id
—
Configure the switch to work in the
NTP broadcast client mode
ntp-service broadcast-client
Required
Not configured by default.
Configuring NTP Multicast Mode
For switches working in the multicast mode, you need to configure both the server and clients. The
multicast server periodically sends NTP multicast messages to multicast clients. The switches working
in the NTP multicast client mode will respond to the NTP messages, so as to start the clock
synchronization.
An H3C S3100 series Ethernet switch can work as a multicast server or a multicast client.
z
for configuring a switch to work in the NTP multicast server mode.
z
for configuring a switch to work in the NTP multicast client mode.
z
A multicast server can synchronize multicast clients only after its clock has been synchronized.
z
An S3100 series switch working in the multicast server mode supports up to 1,024 multicast clients.
Configuring a switch to work in the multicast server mode
Table 1-7 Configure a switch to work in the NTP multicast server mode
Operation
Command
Description
Enter system view
system-view
—
Enter VLAN interface view
interface Vlan-interface vlan-id
—
Configure the switch to work in the
NTP multicast server mode
ntp-service multicast-server [ ip-address ]
[ authentication-keyid keyid | ttl ttl-number |
version number ]*
Required
Not configured by
default.