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"Internet" Outages of 2 minutes or so

I have some fairly knowledgeable users who are reporting "internet" outages of 2 minutes or so.  That is, they can't open web pages and can't get email during those times.
They have been logging when these observations occur.

I've been running a probe that requires 3 lost pings in a row to launch a traceroute.  When something really breaks, the traceroute shows where.
But, I've not captured a bad traceroute, even if one was triggered by 3 lost pings, during the outages reported.

So now I'm wondering if someting else might be going on.
I'm monitoring port errors on the internet connections.  
I'm wondering if email or http specifically might be subject to a failure or interruption and how to automatically test for that?
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Fred Marshall
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Fred Marshall
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2 Solutions
 
nociSoftware EngineerCommented:
tcptraceroute might be of some help  http://michael.toren.net/code/tcptraceroute/

There should be a windows version too if you need it.
You can use tools like curl (http://curl.haxx.se ) to launch various protocol queries agains known sites, includeing verbose logging of actions taken.
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Fred MarshallAuthor Commented:
I'm not sure that any other traceroute would result in anything different as the traceroutes *now* succeed.

Otherwise, I'm looking for a script/loop that I can lauch and leave runnning.  I can likely write/modify scripts but don't want to go to the trouble to compile.
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nociSoftware EngineerCommented:
traceroute uses UDP or ICMP modules.  And there is a current practice or routing some protocol according to a preferred pad...
So if you need to follow http then you tcptraceroute realy can make a difference.
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Fred MarshallAuthor Commented:
OK.  I'll check it out.  
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Fred MarshallAuthor Commented:
Thanks
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