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Command line - HP ProCurve switch example

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Log into the device with Telnet or SSH. Enter privileged mode by typing enable and entering your enable password.

Configure daylight savings time

This sets the normal (non-DST) time to GMT-5, so after timezone, type your GMT offset in minutes.

configure 

time daylight-time-rule 
none 
alaska 
continental-us-and-canada 
middle-europe-and-portugal 
southern-hemisphere 
western-europe 
user-defined

time daylight-time-rule continental-us-and-canada

time timezone -300

Configure SNTP time synchronization

Set the timesync setting to sntp with the following commands:

timesync sntp<
sntp unicast
sntp server priority 1 pool.ntp.org

That sets the NTP server pool.ntp.org to priority 1 in the switch config—that is, the server will check time against it first. You can add more servers with priority 2 and 3 as backup servers.

Confirm the NTP settings

To make sure the settings took effect, run the following command: show clock

Synchronize with an NTP server

To make sure the unit has synchronized with an NTP server, run the following command:

show time 

show sntp

SNTP Configuration

SNTP Authentication : Disabled 
Time Sync Mode: Sntp 
SNTP Mode : Unicast 
Poll Interval (sec) [720] : 720 
Source IP Selection: Outgoing Interface
Priority SNTP Server Address Version Key-id 
-------- --------------------------------------- ------- ---------- 
1 pool.ntp.org 3 0

Exit configuration mode and save changes

# Save the current running configuration to the startup configuration file

write memory

 

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