3Com 3C13636 Configuration Manual page 159

3Com Router 3000 Ethernet Family
Configuration Guide
Table 8-3 Configure NTP broadcast server mode
Configure NTP broadcast server
Remove NTP broadcast server mode
The range of the NTP version number is 1 to 3. It is 3 by default. The range of the
authentication keyid is 1 to 4294967295. This command must be configured on the
interface that is to transmit NTP broadcast packets.
IV. Configuring NTP broadcast client mode
The following configuration is used to specify the local interface on the local router to
receive the NTP broadcast packets. The local router is run in broadcast client mode. It
first listens discreetly to the broadcast packets from the server. When the first broadcast
packet is received, the local router starts a short client/server process to exchange
messages with the remote server in order to estimate network delay. Then it enters the
broadcast client mode to listen discreetly to the broadcast packets and synchronize the
local clock according to the coming broadcast packets.
Perform the following operations in interface view.
Table 8-4 Configure NTP broadcast client mode
Configure
(interface view)
Remove NTP broadcast server mode
This command must be configured on the interface that is to receive NTP broadcast
packets.
V. Configuring NTP multicast server mode
This configuration specifies an interface on the local router to transmit NTP multicast
packets. The local router is running in broadcast mode to multicast periodically to the
multicast clients.
Perform the following operations in interface view.
Operation
Operation
NTP broadcast client
3Com Corporation
8-5
Chapter 8 NTP Configuration
Command
ntp-service
[ authentication-keyid keyid | version
number ] *
undo ntp-service broadcast-server
Command
ntp-service broadcast-client
undo ntp-service broadcast-client
broadcast-server