NTP Settings keep disappearing?

[Bob Smith]

Is it normal for ntp settings to disappear after a reload? I do the following, and then after a reload, the settings have disappeared in the config:

------------------------------------

router#config t

Enter configuration commands, one per line.  End with CNTL/Z.

router(config)#ntp server us.pool.ntp.org

Translating "us.pool.ntp.org"...domain server (8.8.8.8) [OK]

router(config)#ntp update-calendar

router(config)#end

router#write

Building configuration...

[OK]

router#show run

....

....

ntp update-calendar

ntp server us.pool.ntp.org

end

------------------------------------

As you can see, its in the config. However, after doing a reload, both ntp lines disappear. Is this normal?

[Reza Sharifi]

What model switch or router do you have?

[smogra]

Hi,

This could be because of some bug. Please specify the switch and the IOS you are using.

Sweta

[r.eads]

I have the same problem, on WS-C2960S-48LPS-L with 15.0(1)SE.  I'm checking to see if it's having trouble resolving the names at boot.

[Leo Laohoo]

I would recommend putting the IP Address of the NTP servers instead of names. 

[gaciu]

leolaohoo is right. Please notice that when you restart router config is executed first and only than interfaces are changing state to up. In other words there is no way DNS translation can take place. Use IP addresses for now and look for better solution. I suggest to configure warm-reboot it will speed up reloading process.

[raul.camacho]

I've run into the same issue on IOS 15.4.m1 when referencing a DNS based NTP server target.  Seems  like a common thread.  Note, my NTP configuration would disappear without a reload necessarily.  Seems like a bug regardless.

[raul.camacho]

Following up, this is bug id:

CSCsy27237