How can I synchronize my IGX network automatically?

[admin_2]

We have a Stratacom network made of three IGX 8420 (SWSW 9.2.23). The IGXs clocks have one hour in advance. I know that the command 'cnftime' is used to change the time, but I have not found any command to set time automatically when clocks are changed so as to save daylight. I mean, a command similar to the command "clock summer-time DST recurring last Sun Mar 2:00 last Sun Oct 3:00" in a router.

Is there any equivalent command in a IGX 8420 with SWSW 9.2.23?.

[#2]

Use the command cnftmzn with one of the following options:

cdt Central Daylight Savings Time

edt Eastern Daylight Savings Time

mdt Mountain Daylight Savings Time

pdt Pacific Daylight Savings Time

ydt Yukon Daylight Savings Time

and

specify the difference in hours between local time and Greenwich Mean Time

syntax:

cnftmzn