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We use nTop to monitor a class C subnet of our broadband customers.
The server nTop runs atop of is a Gentoo linux (2.6 kernel) machine
positioned as a router for the subnet. For traffic data we're using
nTop's RRD databases, but we've noticed that about 1/4th the customers
on the subnet aren't being assigned RRD databases. Information is
available on the nTop server webpage for these customers, but these IPs
don't have the view historical data icon listed on the page, nor do
they have the file copy of the database/directory on the back-end. I
tried deleting the RRD root directory and letting it rebuild it, but
the same IPs are missing. We're only monitoring one class C, and it's
set to only record local IPs. The system has been running for over a
month, and we know for a fact these customers are passing traffic.
I've compiled a list of customers who seem to be missing, which is
listed below. Because it seemed to be the same IPs always, even after
a rebuilds, and deleting the RRD folder I figure there must be a
pattern. Using a little bit of bc magic I converted the last digit of
all of the IPs to binary. They're listed below. This may or may not
be related to the problem or not, but all of the bad IPs seem to end in
11. I looked through the code in rrdplugin.c but didn't see anything
that stuck out to me. If anyone else has any ideas it'd be really
helpful. Here's my init line: ntop -- -d -L -c -g -m '12.111.122.1/24' -o -u ntop -L -M --disable-instantsessionpurge --http-server 3000 --interface br0,eth0 It's a from source build directly from the 3.2 tarball on sf, not from gentoo's portage.
Thank You, Cody Baker [EMAIL PROTECTED] http://www.wilkshire.net |
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