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IST Time in ASA 5520

Hi Friends,

I have pair of CISCO ASA 5520 Firewall. I have set IST time as below but still i can see some lagging in time. Pls helpe me to fix it.

Config)# clock time-zone IST 5 30

# sh clock

12:06:44.827 IST Wed Jul 28 2010

I can 20 min delay in my firewall.


Cisco Employee

Re: IST Time in ASA 5520

If you are wanting to set it manually, please issue the clock set command.

Otherwise, you can also set it to communicate to an NTP server to get time synched to NTP.

I hope this information helps you.

Re: IST Time in ASA 5520

HI Edadios,

Thanks for your reply. Please advice me for below also

To use the NTP

ntp << Server IP>>  is this enough or i need to give ntp authentication and ntp trust_key also..

In my switches i can see  ntp> only..


Cisco Employee

Re: IST Time in ASA 5520

Hi Tamilvanan,

If your NTP server does not require authentication, you can just specify the 'ntp server' command. Here is a link to the configuration guide for NTP for your reference:

Hope that helps.


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