4
Time Protocols
SNTP: Viewing, Selecting, and Configuring
Enabling SNTP in Broadcast Mode. Because the switch provides an SNTP
polling interval (default: 720 seconds), you need only these two commands
for minimal SNTP broadcast configuration:
Syntax: timesync sntp
Selects SNTP as the time synchronization method.
Syntax: sntp broadcast
Configures broadcast as the SNTP mode.
For example, suppose:
â– Time synchronization is in the factory-default configuration (TimeP
is the currently selected time synchronization method).
â– You want to:
1. View the current time synchronization.
2. Select SNTP as the time synchronization mode.
3. Enable SNTP for Broadcast mode.
4. View the SNTP configuration again to verify the configuration.
The commands and output would appear as follows:
ProCurve(config)# show sntp
1
show sntp displays the SNTP configuration and also shows that
TimeP is the currently active time synchronization mode.
SNTP Configuration
Time Sync Mode: Timep
SNTP Mode : disabled
Poll Interval (sec) [720] : 720
ProCurve(config)# timesync sntp
ProCurve(config)# sntp broadcast
2
3
5406_1(config)# show sntp
4
show sntp again displays the SNTP configuration and shows that
SNTP is now the currently active time synchronization mode and
SNTP Configuration
is configured for broadcast operation.
Time Sync Mode: Sntp
SNTP Mode : Broadcast
Poll Interval (sec) [720] : 720
Note: The Protocol Version parameter will also appear in show sntp listings if the IP address of an SNTP server (used
in Unicast mode) is configured in the switch. However, the protocol version is used only when SNTP is configured
for Unicast operation. See “Enabling SNTP in Unicast Mode” on page 12.
Figure 9-7. Example of Enabling SNTP Operation in Broadcast Mode
9-11
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