DST and change time problem

[TwystedPair]

I have an S8500 Media Gateway. A few months ago, I fixed a problem that we were having with the system time on the switch. Every month or so, the time on the phones would be a few minutes slow and I would manually reset it to the correct time. The fix was to configure the switch to sync with an NTP server, over the Internet. This worked flawlessly, until now. I figured that this setting would solve the problem with the DST change this year. I thought that the switch would sync with the time server and notice that the time wasn't supposed to switch this last weekend. The time did change, however, and now I can't change the time forward an hour. At first, when I went into the Web Interface and tried to change the time, it would say the system time is now: and it would revert to the wrong time. I tried this a few more times with the same result. I thought it might have something to do with the NTP server, so I removed the NTP Server from the Configure Server page of the Web management Interface. Now, when I go into the management page and change the time, it does say the system time is now: and shows the correct time, however it doesn't stick. I go back in, and it reverts to the wrong time again. I hope I made sense. Please help.

 

[namesrhard2pick]

Did you apply the DST patchs last year? What does your daylight-savings-rules look like? Which ever rule you have configured make sure this rule is applied to your time. see example below of display time.

display daylight-savings-rule
display time
DATE AND TIME

DATE

Day of the Week: Tuesday Month: October
Day of the Month: 28 Year: 2008

TIME

Hour: 16 Minute: 45 Second: 10 Type: Daylight Savings

Daylight Savings Rule: 1

WARNING: Changing the date or time will impact BCMS, CDR and MEASUREMENTS

 

[TwystedPair]

Thank you very much for the reply. Here is what my daylight savings rule looks like:

Rule Change Day Month Date Time Increment

0: No Daylight Savings

1: Start: first Sunday on or after April 1 at 02:00 01:00
Stop: first Sunday on or after October 25 at 02:00

 

[TwystedPair]

When I took over management of this switch, I wasn't left with anything along the lines of documentation on what was installed before I took over. I do not know if the DST patch was installed, nor did I even know there was one for the switch. (I am still very new to phone switch management). Is it as easy as changing the rule to the correct date?? Will that be retroactive and change the switch to the correct time now, or will I need to change that manually? I have tried several times to change the system time forward an hour from the web management interface, but it will not stick.

 

[TwystedPair]

This is what I see when I do a display time command. It doesn't even look like it's using the DST rule. Am I looking at this right??

DATE

Day of the Week: Wednesday Month: October
Day of the Month: 29 Year: 2008

TIME

Hour: 10 Minute: 33 Second: 10 Type: Standard

Daylight Savings Rule: 0

 

[namesrhard2pick]

Doesn't appear your switch is using any daylight savings rule. When the DST patch came out, Avaya recommended that the daylight savings rule be changed to the following:

Rule 1
Start: first Sunday on or after March 8 at 02:00 01:00
Stop: first Sunday on or after November 1 at 02:00

Next,
at command prompt type set time
1) go to type: and make this daylight saving (you have standard right now)
2) go to daylight savings rule: change this to 1 (you have 0 right now).

As for the patch, you might want to look on

http://support.avaya.com

because the patch is differnt for sotware releases. There are also patches for Audix and CMS if applicable.

Let me know if this helps.

 

[TwystedPair]

If it's not setup to use any daylight savings rule, why and how did the time automatically change last weekend?? I will make the suggested changes to the daylight savings rule. Will that retroactively undo the change that was made for last weekend? Is the changing of the rule to be used as an alternative for the patch, or in addition to??

 

[RyanEOD]

Didn't you say you were using a NTP server? Well did they have their time jacked up and it switch last weekend?

 

[TwystedPair]

I made the recommeded changes and here is what they look like now:

DATE AND TIME

DATE

Day of the Week: Wednesday Month: October
Day of the Month: 29 Year: 2008

TIME

Hour: 12 Minute: 7 Second: 12 Type: Daylight Savings

Daylight Savings Rule: 1



DAYLIGHT SAVINGS RULES

Rule Change Day Month Date Time Increment

0: No Daylight Savings

1: Start: first Sunday on or after March 8 at 02:00 01:00
Stop: first Sunday on or after November 1 at 02:00

 

[TwystedPair]

RyanEOD (Programmer)
29 Oct 08 15:09
Didn't you say you were using a NTP server? Well did they have their time jacked up and it switch last weekend?

I thought the same thing, Ryan. I just don't understand why the time changed at all if it is supposed to be synching with the time server. I know the Time Server is working because I don't have to go in once a month and set it forward a few minutes like I did every month before. That is one of my biggest question marks.

 

[TwystedPair]

After making the changes to the daylight savings rule, our the system time is now 2 hours off, not just one!!!!!

 

[mikeydidit]

I think the easiest way to determine that you have or do not have the DST patch is to log into the web management of the servers. Go into maintenance and then software versions. This will list what patches are HOT, loaded and active. Looks like this.

 Software Version  

The Software Version Web page displays the software version of the active partition of this server. 


  Operating system:	 Linux 2.6.11-AV18 i686 i686
             Built:      Mar 9 15:26 2007

          Contains:	 01.4.642.1
        Reports as:	 R013x.01.4.642.1
    Release String:      S8710-013-01.4.642.1
UPDATES:
01.4.642.1-15756        activated       cold        patch 15756 for 01.4.642.1
01.4.642.1-15179        activated       hot         Medium risk pcre security update
01.4.642.1-14809        activated       hot         Daylight Saving Update (2007h-1)


 Translation Saved:	 2008-10-30 00:01:41

 License Installed:	 2006-09-19 14:34:46

Now I am not sure if this is the case with 4.0 or higher, but I am sure that versions 3.1 and below have to have the patch to correct the DST rules and make the changes.

If you need to load the patch, look in the FAQ section at the top of the page. I have a FAQ in there that should get you through finding the right patch for your version of software and loading the DST patch.


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