[mrtg] Re: Newbie question

Bill Wichers billw at waveform.net
Mon Feb 28 23:48:20 MET 2005

>> Since what I mainly want to do is monitor bandwdith of the T-1, I want
>> to
>> monitor interface 1 and 3. Do I list the MaxBytes for both of these
>> interfaces to be 193000 (T-1 bandwidth in bytes)? And so my graph would
>> show
>> the bandwidth consumed in bits?

I need to pay more attention when replying to these :-)

You should set the MaxBytes for the Ethernet to an appropriate value for
an Ethernet port (1250000 or 12500000 for 10 Mb/s or 100 Mb/s,
respectively). Remember that it's possible for the Ethernet port to move
lots more than the T1  during certain activities (tftp updates on the
router, DoS attacks, etc.).

Normally MaxBytes is set to whatever is the maximum capacity -- in
bytes/second -- of the interface you are monitoring with the associated
Target[]: line in MRTG.


Waveform Technology
UNIX Systems Administrator

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