Problems with Cisco Clock and Timestamps

Posted on 2007-04-03
Medium Priority
Last Modified: 2008-09-17
I've become extremely annoyed with the cisco clock and timestamps on my devices.

My clock shows one time when I do a "show clock":

.11:13:58.809 EDT Tue Apr 3 2007

Then to verify my log timestamps are correct, I do a "clear counters" and issue a "show log".  My log shows another time on the timestamp:

.Apr  3 15:14:29: %CLEAR-5-COUNTERS: Clear counter on all interfaces by routeradmin on vty0 (172.X.X.X)


Here's the output from a "show clock detail"
.11:17:34.631 EDT Tue Apr 3 2007
Time source is NTP
Summer time starts 02:00:00 EST Sun Mar 11 2007
Summer time ends 02:00:00 EDT Sun Nov 4 2007


Here's the only config I have on the router, aside from my NTP servers
clock timezone EST -5
clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00


Please note, the correct time is the one showing up under "shock clock" and the incorrect time is displaying under my logging and debugging timestamps.

Question by:ctrost
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
LVL 50

Expert Comment

by:Don Johnston
ID: 18845763
From global config;

service timestamp logging datetime
service timestamp debug datetime


Author Comment

ID: 18845797
That's already in place...that's how I'm able to see the date and time on the logging timestamp I posted.  Sorry, should have mentioned that.
LVL 50

Expert Comment

by:Don Johnston
ID: 18847321
As the difference is 4 hours, it appears to be GMT offset issue.
When ransomware hits your clients, what do you do?

MSPs: Endpoint security isn’t enough to prevent ransomware.
As the impact and severity of crypto ransomware attacks has grown, Webroot has fought back, not just by building a next-gen endpoint solution capable of preventing ransomware attacks but also by being a thought leader.


Author Comment

ID: 18849850
Ok.....so how do I fix it?  My timezone was set properly with the "clock timezone EST -5" command....which is my proper timezone.  I'm in Indiana and we're on EST (US & Canada).  Obviously we're in EDT currently but I reflected that change with the cisco-provided summertime command...

Shock clock is showing up fine but show log and showing the wrong timestamps, makes no sense
LVL 50

Accepted Solution

Don Johnston earned 1000 total points
ID: 18850211
service timestamps logging datetime localtime


Author Comment

ID: 18850261
you da man don.  Thanks

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
Getting hacked is no longer a matter or "if you get hacked" — the 2016 cyber threat landscape is now titled "when you get hacked." When it happens — will you be proactive, or reactive?
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…
Suggested Courses
Course of the Month10 days, 1 hour left to enroll

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question