Well i am using in an enterprise n/w to monitor interoffice links, i hv
MRTG, but not happy with it. My management team is intersted in monitoring
traffic based on services.
I hv a central router which connects to other locations. I hv configured
netflow on the
central router(7200) and monitoring a single serial(locations). All leased
lines are of
2mbps(E1) connecting to central location. I hv seen the flows exported for a
is a max of 160kbps average(total flow file size is max 2mb for 5 min in
I can enable all the interfaces for netflow, but all the flows will be in
one rrd files.
which i want to collect saperate flows for each configured serial
i want collect flows for 2 different routers.
May be setting up clfowd for the above setup looks complicated, want to
know if it
can be done.
My other question:
I see the ioservice graph has in/out swaped, how to fix it???
From: R. Drew Davis
To: Hanumanth Jerbandi (SSD-BLRAKS-IC&NI)
Sent: 12/11/01 10:36 AM
Subject: Re: Cflowd Message: failed to create flows
> Date: Tue, 11 Dec 2001 08:59:30 +0530
> From: "Hanumanth Jerbandi (SSD-BLRAKS-IC&NI)"
> To: "'R. Drew Davis'" <firstname.lastname@example.org>,
> Subject: RE: Cflowd Message: failed to create flows
> Cc: email@example.com
> I hv a query on cflowd, Hv u tried to run multiple instances of
> I want to collect flows saperately for 2/more different
>routers/serials, or want to
> collect saperate(stored in respective ip address dir) flows for
>more serials on the same router.
> In fact i had posted this to mailing list... but i didnt get any
> hope if u can help me.
> I hv seen that graphs reported for i0services is reversed, i.e in/out
>swaped, how to fix it. Does the ifindex on the router changes!!!, i hv
I think I remember seeing your e-mail to the list. My own cflowd
is pretty simple. Had 2 routers feeding one data collector. At the
moment, I'm not even collecting cflowd data.
Not only that, but our routers were nearly all ethernet, except for one
to Holmdel, so I've very little experience with serial lines and
Sometimes I'm able to help people on the list by making informed
but I try to stop myself from making uninformed guesses to the list.
(My Dad's advice was "Better to let people think you are dumb than to
open your mouth and prove it to them").
So, I hope someone else on the list has a bit more relevant experience
a smidge of free time to try to help you out with your question. Sorry
I can't be of better service to you.
You want to run 2 instances of cflowd on the same server? Going to
need a ton of shared memory and disk space and bandwidth to make that
work, assuming traffic is going to be heavy. As long as you make the
config files such that the streams don't cross each other, seems like it
should work. But remember Egon Spengler's advice: Crossing the
streams would be bad.
Editorializing a bit --- It isn't obvious to me: Why do you want
separate collectors? You might get more attention from the list if
you can convince people its an interesting problem that they might want
to pursue for their own purposes.
R. Drew Davis, Room MH 2C-302A E-mail: firstname.lastname@example.org
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