In this Example:, the Poll Interval and the Protocol Version appear at their default settings.
Both IPv4 and IPv6 addresses are displayed.
Note: Protocol Version appears only when there is an IP address configured for an SNTP server.
If the SNTP server you specify uses SNTP v4 or later, use the sntp server command to specify the correct
version number. For example, suppose you learned that SNTP v4 was in use on the server you specified above
(IP address 10.28.227.141). You would use the following commands to delete the server IP address , re-enter it
with the correct version number for that server.
Specifying the SNTP protocol version number
switch(config)# no sntp server 10.28.227.141
1
switch(config)# sntp server 10.28.227.141 4
2
switch(config)# show sntp
SNTP Configuration
Time Sync Mode: Sntp
SNTP Mode : Broadcast
Poll Interval (sec) [720] : 600
IP Address Protocol Version
------------- -----------------
10.28.227.141 4
3
•
1
Deletes unicast SNTP server entry.
•
2
Re-enters the unicast server with a non-default protocol version.
•
3
show sntp displays the result.
Changing the SNTP poll interval (CLI)
Syntax:
sntp <30..720>
Specifies the amount of time between updates of the system clock via SNTP. The default is 720 seconds and the
range is 30 to 720 seconds. (This parameter is separate from the poll interval parameter used for Timep
operation.)
Example:
To change the poll interval to 300 seconds:
switch(config)# sntp 300
Changing the SNTP server priority (CLI)
You can choose the order in which configured servers are polled for getting the time by setting the server priority.
Syntax:
sntp server priority <1-3> <ip-address>
Specifies the order in which the configured servers are polled for getting the time Value is between 1 and 3.
NOTE: You can enter both IPv4 and IPv6 addresses. For more information about IPv6 addresses,
see the IPv6 configuration guide for your switch.
Chapter 2 Time Protocols 29
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