Monitor internet access outtage

Posted on 2011-03-15
Last Modified: 2012-08-14
I have a computer which connects to the internet via a LAN ADSL-modem-router.
Since a change of ISP, I have reasons to suspect that outtages occur more frequently than before. However, some of these outtages could be micro in duration.
Could the experts suggest a software utility that I can install on this computer to monitor and log these outtages for say 2-3 days 24/7?
Question by:garychu
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
  • 2
  • 2

Expert Comment

ID: 35142031
What type of adsl modem do you have? Most likely you can enable some sort of logging in that modem from which you can extract the info you want.

Or you can use a ping loop (unix/linux/mac/bsd systems):

while true; do echo "$(date): $(ping -c 1|grep from)" >>~/internet_monitor.log; done

Author Comment

ID: 35142424
Thanks, paulqna.
The adsl modem used does not provide traffic or status logging.
The OS of the computer is Windows XP Pro SP3.
How do I do a ping loop with a Windows OS?

Expert Comment

ID: 35142628
With the sh.exe from this site. But then make sure the directory where you extract these files is included in your system's PATH variable.

On windows the -c flag from ping is -n I think.
Business Impact of IT Communications

What are the business impacts of how well businesses communicate during an IT incident? Targeting, speed, and transparency all matter. Find out more in this infographic.

LVL 39

Expert Comment

by:Aaron Tomosky
ID: 35142843
Ping -t is looping until you stop it

Author Comment

ID: 35144590
Link to sh.exe is not good.
1) Should I not have to ping to at least 2 separate remote hosts immediately one after another?
Failure to reply from just one could indicate a problem at the destination host end. Not conclusive proof of outtage.
2)Is it possible to only selectively log failures rather than everything?
LVL 39

Assisted Solution

by:Aaron Tomosky
Aaron Tomosky earned 200 total points
ID: 35144694
Pinging a dns server like or is probably a safe test. They don't really go down.

Accepted Solution

paulqna earned 300 total points
ID: 35144914
this one does work (slow but works)...

you would need some script that only logs something if the result from this is "1 1":
ping -c 1 -n |gawk '/transmitted/{print $1" "$4}'

Featured Post

Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
eigrp - not allow a subnet from advertising 1 86
ospf neighbors not coming up 6 83
Can't access router with user and pass 10 108
Turning Verizon Fios Router into a Bridge? 28 126
We've been using the Cisco/Linksys RV042 for years as: - an internet Gateway - a site-to-site VPN device - a leased line site-to-site subnet-to-subnet interface (And, here I'm assuming that any RV0xx behaves the same way as an RV042.  So that's …
Introduction Many times we come across a slowness or instability between two hosts, and almost always we blame the poor networking guys, just because they're an easy target.  Sometimes we forget that other factors including disk bottlenecks, CPU …
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor ( If you're interested in additional methods for monitoring bandwidt…

739 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