[mrtg] Best approach to exclude certain traffic?

Markus Fischer mfischer at guru.josefine.at
Sat Jun 29 10:05:50 MEST 2002


    besides the problem with displaying the system load (for
    which i probably really should just use rddtool), I'm
    wondering about another thing.

    Simplyfied, our network looks like this:

    Intranet ------- Gateway/Mrtg machine ----  Webserver     Real.World.Ip2
    eth0             eth1            eth0       eth0

    I'm monitoring traffic on Gateway (eth0/eth1) and the
    Webserver (eth0).  Now, the thing is: one of our machines in
    the intranet ( grabs all the logfiles (system,
    apache) from our Webserver Real.World.Ip2 via SSH. This
    ultimatively leads to a very high traffic during the time the
    data is fetched. Normally, the traffic at max. is about 7.2k
    - 15.k. But during this time period the logfiles are fetched
    it explodes up to 800k which makes all the graphs graphing
    interfaces which are along the data fetching route (Gateway
    eth1 <- Gateway eth0 <- Webserver eth0) pretty unreadable
    because all you see is a mega-high speak because of the 800kb
    and the rest of the data is around 7-15kb (which is pretty
    non-existent with the high spike).

    Does someone has an idea how I should go about sorting out
    this traffic? I really don't need it because I've other
    indications whether the transfer happened or not and it's
    more important to see what "normal" traffic the interfaces do

    next for any pointers,

        - Markus

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