[mrtg] Mbit/s versus Mibit/s

McDonald, Dan Dan.McDonald at austinenergy.com
Thu Oct 2 13:39:45 CEST 2008

On Thu, 2008-10-02 at 11:43 +0100, Joao Ferreira gmail wrote:

> What is the usual unit for displayin these values ?
> is it Mbit/s (1000 x 1000 bits per second)

Yes.  Network speeds are absolute numbers, so they don't have to be
rounded to the closest power of 2.  On the other hand, memory has to be
addressed bit-wise, so it must be produced (and addressed) in units that
are a power of 2.  Disk drives usually are read and written a block at a
time, and it is more convenient to allocate a buffer on a power-of-2
boundary, so they are also described that way.

> BTW, how does MRTG represent it ? is it Mbit/s or Mibit/s ?

depends on what you have set for kilo[]:

Daniel J McDonald, CCIE #2495, CISSP #78281, CNX
Austin Energy

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