• December 08, 2019, 05:21:56 PM
Welcome, Guest. Please login or register. Registration is free.
Did you miss your activation email?

Author Topic: Daylight Saving Time  (Read 3413 times)

0 Members and 1 Guest are viewing this topic.

Offline Michael McNamara

  • Administrator
  • Hero Member
  • *****
  • Posts: 3841
    • michaelfmcnamara
    • Michael McNamara
Daylight Saving Time
« on: March 11, 2012, 06:27:42 PM »
I've received a few inquires over the past few days from folks asking about Daylight Saving Time (DST) and how to configure it on the Avaya Ethernet Routing Switches.

I would recommend you start with this blog post as a primer;
http://blog.michaelfmcnamara.com/2008/06/network-time-protocol-ntp/

That's a fairly old post and it requires that you re-configure the summer-time setting every year (in every switch) with the stackable switches. Thankfully I'm very adept at utilizing Expect to make configuration changes across a large number of switches. However, with the release of 6.2.x software there's a new configuration option that allows you specify the time format similar to the Ethernet Routing Switch 1600, 8600 and 8800 switches so they don't need to be re-configured every year.


clock time-zone EST -5
clock summer-time recurring 2 Sunday March 02:00 1 Sunday November 02:00 60


The commands above are for enabling Eastern Daylight Time (EDT) since I'm on the east coast of the US.

The clock summer-time command replaces the original below;


clock summer-time EDT date 11 Mar 2012 2:00 4 Nov 2012 2:00 +60


Every year you would need to reconfigure the switch the exact date that Daylight Saving Time would be enacted. The new command works similar to the ERS 8600/8800 by calculating the second Sunday or March and the first Sunday of November.

Cheers!
« Last Edit: March 11, 2012, 06:32:24 PM by Michael McNamara »
We've been helping network engineers, system administrators and technology professionals since June 2009.
If you've found this site useful or helpful, please help me spread the word. Link to us in your blog or homepage - Thanks!