Brian Henning wrote:
Hi Folks,
Pardon my ignorance...but is there an IP somewhere out there that is
specifically set up to be a ping target for checking connectivity?
We're having some serious issues with our DSL here lately, and I want
to set up a task to monitor it with pretty high resolution, say,
around one ping per second (I have a feeling some of its frequent
flakings are only seconds in length, but enough to interrupt our VPN).
Obviously, doing this sort of thing would require a target (or more
probably, list of targets) that are highly reliable themselves, to
avoid false down indications. So I'd probably create a list of N
targets, and each would only see a ping from me every N seconds unless
one failed, in which case the process would ping the next target on
the list immediately.
My concern, of course, being a [hopefully] nice little Net citizen, is
not wanting to irritate anyone by taking about 302kB out of their
transfer quota every hour (3600 pings * 84 bytes each), unless they're
intending to be so generous.
In other words, I have a feeling I shouldn't just randomly choose some
hosts (unless I choose a huge number of them...a possibility). Hence
the question.
And as a sideline question, if there's a nice utility out there
already to do something like that (take a list of hosts and ping one
every X seconds and report on the success), I'd love to know about it.
Thanks a bunch as always!
~Brian
I'm surprised no one mentioned smokeping, by Tobias Oetiker, the author
of RRDtool and MRTG. You can find more information here:
http://people.ee.ethz.ch/~oetiker/webtools/smokeping/
It gives a lot more information about latency than you really need (it's
more suited to Jon's problem), but it does the trick nicely for noticing
connectivity problems, and generates beautiful graphs in the process.
From a quick googling, there are packages for both Debian and Ubuntu.
Aaron S. Joyner
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