Configuring Ntp Multicast Mode - 3Com 4200G 12-Port Configuration Manual

To do...
Enter system view
Enter VLAN interface view
Configure the switch to work in
the NTP broadcast server
mode
Configuring a switch to work in the NTP broadcast client mode
Follow these steps to configure a switch to work in the NTP broadcast client mode:
To do...
Enter system view
Enter VLAN interface view
Configure the switch to work in
the NTP broadcast client mode

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.
A multicast server can synchronize multicast clients only after its clock has been synchronized.
An S4200G 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
Follow these steps to configure a switch to work in the NTP multicast server mode:
To do...
Enter system view
Enter VLAN interface view
Configure the switch to work in
the NTP multicast server mode
Use the command...
system-view
interface Vlan-interface
vlan-id
ntp-service broadcast-server
[ authentication-keyid key-id |
version number ]*
Use the command...
system-view
interface Vlan-interface
vlan-id
ntp-service broadcast-client
Use the command...
system-view
interface Vlan-interface
vlan-id
ntp-service multicast-server
[ ip-address ]
[ authentication-keyid keyid |
ttl ttl-number | version
number ]*
1-9
Remarks
—
—
Required
Not configured by default.
Remarks
—
—
Required
Not configured by default.
Remarks
—
—
Required
Not configured by default.