RE: Monitor path changes

Frank Bulk writes:
 > Except when you can't contact the endpoint and you wonder what hop(s) are
 > broken or breaking it.  Was it running along another path before that
 > worked...
 > 
 > Frank

I can see wanting to monitor your own network for routing failures and
changes in dynamic routing that might indicate problems, but if you're
monitoring some endpoint outside your network by doing continual
traceroutes, apart from satisfying your own curiousity I'm not sure how
much you could use the information on path changes in networks that
someone else is managing.  You could find that the path changes all the
time even while connectivity remains available, or that when
connectivity is interrupted knowing what the different paths might have
been isn't of any use.  So maybe you could go pester some other provider
about the network failure but that might not do anything to speed up the
resolution.  And you couldn't even depend on traceroute output that much
since an apparent missing hop in a traceroute doesn't necessarily mean
that there is a failure of connectivity; maybe some router just didn't
feel like sending an ICMP TTL exceeded back to you.

 > -----Original Message-----
 > From: [email protected] [mailto:[email protected]] On
 > Behalf Of Larry Sheldon
 > Sent: Saturday, February 26, 2011 1:35 PM
 > To: [email protected]
 > Subject: Re: Monitor path changes
 > 
 > On 2/26/2011 11:28 AM, Frank Bulk wrote:
 > > It could be chatty, I guess I don't really know until I instrument it.  As
 > > it is right now, I never know if there's change in traffic path.
 > 
 > 
 > I thought the whole point if the Intartubes was "you don't care what the 
 > path is".
 > -- 
 > Superfluity does not vitiate
 > California Civil Code quote-#3537
 > 
 > Life should not be a journey to the grave with the intention of arriving 
 > safely in an attractive and well preserved body, but rather to skid in 
 > sideways, your body thoroughly used up, totally worn out and 
 > screaming,"Yah hoo! What a ride!"
 >     ripped from "GM" Roper
 > 
 > 
 > http://lwolt.wordpress.com/
 > http://tinyurl.com/269dspw # <-- Where I  live
 > 1
 > -- 
 > Eat sushi frequently. - Avi
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 > -- 
 > Eat sushi frequently. - Avi
 > [email protected] is the human contact address.
 > [email protected] is the list posting address.
 > See below URL for subscribe/unsubscribe and list options:
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-- 
Eat sushi frequently. - Avi
[email protected] is the human contact address.
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