3Com 10014303 - Manual (Page 45)

Table 4-2 Configure NTP peer mode
Operation Command
Configure NTP peer mode
ntp-service unicast-peer X.X.X.X [ version number | authentication-key
keyid | source-interface {
{ interface-name | interface-type }
interface-number } | priority ] *
Disable NTP peer mode undo ntp-service unicast-peer X.X.X.X
NTP version is in the range of 1 to 3 and defaults to 3, and authentication key ID is in
the range of 1 to 4294967295. You can specify an interface by specifying its
interface-name or interface-type interface number. The local router will use the IP
address of the interface as the source IP address carried by the NTP messages sent
to the time server. In addition, you can specify the time server as the preferred time
server by specifying priority.
III. Configure NTP broadcast server mode
This task is to specify an interface on the local router for sending NTP broadcast
messages. In this case, the local router is running as a broadcast server to
periodically send broadcast messages to the broadcast clients.
Perform the following configuration in interface view.
Table 4-3 Configure NTP broadcast server mode
Operation Command
Configure NTP broadcast
server mode ntp-service broadcast-server [ authentication-keyid keyid | version
number ] *
Disable NTP broadcast server
mode undo ntp-service broadcast-server
NTP version is in the range of 1 to 3 and defaults to 3, and authentication key ID is in
the range of 1 to 4294967295. This command must be configured on the interface
that is to be used for sending NTP broadcast messages.
IV. Configure NTP broadcast client mode
This task is to specify an interface on the local router to receive the NTP broadcast
messages and to run in broadcast client mode. The local router first detects the
broadcast message packets from the server. Upon the receiving the first message
packet, the local router enters a temporary Client/Server mode to exchange the
message with the remote server for the purpose of estimating the network delay. It
then switches to the broadcast client mode to assume the work of detecting the
broadcast message packets so it can synchronize the local clock.
Perform the following configuration in interface view.
3Com Router Configuration Guide Addendum for V1.20
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