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Catalyst 2950 switch clock problem

holunking
Level 1
Level 1

Dear all,

When i try to "clock set" the correct time and date, than save memory. After reload the switch it can't effective the correct time and date. is there any problem?

Pls advise!

12 Replies 12

ajagadee
Cisco Employee
Cisco Employee

Stanley,

If you manually set the clock on a 2950, the value is valid only until the switch restarts.

Please refer the below URL for details:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/12114ea1/2950scg/swadmin.htm#21043

I would recommend that you look @ NTP.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/12114ea1/2950scg

/swadmin.htm#21043

Let me know if it helps.

Regards,

Arul

** Please rate all helpful posts **

Dear Arul,

Thanks your advise, but still failed after reload the switch!

have you tried with the NTP?

switch(config)#ntp server x.x.x.x

it should work even though if you restart the switch. what is the IOS version? i faced the same problem in my 3550 switch, later after upgrading the IOS it started working fine, may be you can also try that option(if really you wanted making it working)

Dear all,

I didn't tried NTP services, i only use "clock set" command.

My IOS version is below:

IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA4a, RELEASE SOFTWARE

(fc1)

Pls advise!!!

can u also try with the ntp server & lemme know the results of that.

If you reload the switch the time will always be reset to the default if you used the clock set commnad to set the clock this is normal behavior .

Stanley,

Do u mean to say that the switch didn't update the time after reload when configured with NTP.

Narayan

Hi

All old switches and routers do not retain the time when reloaded. This is because they do not have any battery to keep the clock running. So after reload it defaults to

generally to the year 1993

To overcome this you have to configure NTP in your network. After a switch is reloaded it will update its clock from the NTP server.

New routers and switches do include a battery in the motherboard and hence retain the time after reload.

HTH, rate if it does

Narayan

Hi Narayan,

That's my problem when reload the switch after go to the year 1993. If i don't want using NTP services, how a i do get the correct time?

Pls advise!!!

NTP is your only option if you don't want the clock reset after reload .

No other choice?

NTP or upgrade to new switch

NTP seems to be preffered option

Narayan