NTP Time and DST time not syncing

[Aggie87]

Guys,

We are in North Carolina and I have a NTP server setup and configure.  It is working great on all of the ERS5000 switches, however on the ERS8600 it is not.  I followed the command Mike posted however the time is still 30 minutes off and the hardware time is different.  Any Idea on how to fix this.


COG8610_TOP:5# show date
local time:    WED APR 06 14:47:52 2011 EST
hardware time: WED APR 06 18:07:52 2011 UTC
COG8610_TOP:5# show date
local time:    WED APR 06 14:50:42 2011 EST
hardware time: WED APR 06 18:10:42 2011 UTC

[Aggie87]

This are the command I used from Mike's posting.

config bootconfig tz dst-name "EDT"
config bootconfig tz name "EST"
config bootconfig tz offset-from-utc 300
config bootconfig tz dst-end M11.1.0/0200
config bootconfig tz dst-start M3.2.0/0200

[Michael McNamara]

The switch still believes it's in EST (Eastern Standard Time), look at the output from your command.

Here's the output from one of my switches;

sw-ccr-8600-b.acme.org:5# show date
local time:    WED APR 06 15:25:12 2011 EDT
hardware time: WED APR 06 19:25:12 2011 UTC


You have a valid/working NTP server configured?

sw-ccr-8600-b.acme.org:5# show ntp info

Sub-Context: clear config dump monitor mplsping mplstrace peer show switchover test trace wsm asfm sam
Current Context:

                      enable : true
                    interval : 15
last ntp update:

          latest update time : WED APR 06 15:13:02 2011 EDT
             synchronized to : 10.1.20.1 (Stratum: 3)


Good Luck!

[mdieter1]

After entering the time commands that you listed in the bootconfig (and saving the bootconfig, I assume), did you reboot?
Remember, any changes to the bootconfig require a reboot to become active.

In addition to all the commands you listed, there is also a flag for DST (it is not in the 'tz' hierarchy, but in the 'flags' hierarchy) that must be set to enabled---you should confirm that yours is set to enabled.

[Aggie87]

Thanks everyone for your help, however the setting below seem to be working I will know for sure once the old DST passes by.  I didn't do a reboot.


COG8610_TOP:5# config bootconfig tz info
tz dst-end M11.1.0/0200
tz dst-name "EDT"
tz dst-offset 60
tz dst-start M3.2.0/0200
tz name "EDT"
tz offset-from-utc 240
TIMEZONE=EDT:EDT:240:::0

[Michael McNamara]

In general @mdieter1 is correct about a reboot for any of the bootconfig statements. However, I don't believe I had to reboot to enable daylight saving time support.

Cheers!

[superbaim]

My Core Switch is not synced to although it said it sync

this is the info from my core
ERS-8610:6# show ntp info

Sub-Context: clear config dump monitor show test trace wsm asfm sam
Current Context:
                    enable : true
                    interval : 15
last ntp update:
          latest update time : THU NOV 17 07:05:01 2011 UTC
          synchronized to : 172.16.30.25 (Stratum: 3)

ERS-8610:6# date
local time:    THU NOV 17 07:13:42 2011 WIT
hardware time: THU NOV 17 07:13:42 2011 UTC



this is my ntp server time :
[root@DPRNMS01 raddb]# date
Thu Nov 17 14:14:08 WIT 2011

[Michael McNamara]

ERS-8610:6# date
local time:    THU NOV 17 07:13:42 2011 WIT
hardware time: THU NOV 17 07:13:42 2011 UTC

You have a configuration issue since WIT is +900 UTC.

The two lines I've quote above should have a delta of 9 hours and should not be the same.

Once you set your timezone properly everything will look right.

Good Luck!

[superbaim]

you right , its depend in setting timezone, i live in Jakarta(West Indonesian Time) GMT+7 , what command to use ?


thx

[Michael McNamara]

You need to set the offset in the bootconfig;

config bootconfig tz offset-from-utc

The value is in minutes so 7 hours (* 60 minutes) = 420. I'm not sure if it needs to be +420 or -420.

Cheers!

[superbaim]

You need to set the offset in the bootconfig;

config bootconfig tz offset-from-utc

The value is in minutes so 7 hours (* 60 minutes) = 420. I'm not sure if it needs to be +420 or -420.

Cheers!

its sync now, its accept -420 value , cheers

[Michael McNamara]

I'm happy to hear that I was able to help.