MRTG and Bandwidth on Dedicated Ports

Drew C Morone (drew@j51.com)
Wed, 6 Aug 1997 14:49:41 -0400 (EDT)

Hi there,
I'm using MRTG to check router stats, and it seems to be working well.
I want to start also viewing stats on the Portmaster ports for our
dedicated dialins. We have a few sites that dial in to our portmaster over
28.8 modems and ISDN (bitsurfrs). I ran the configmaker on the portmaster,
and it spit out a nice config file, however, it made some interesting
config decisions. To arrive at the MaxBandwidth value, it took the port
speed, and divided it by 8. For a T1 connection that makes sense, there's
no compression on the port, so that's true bandwidth. With a modem,
however, it's not too reliable. I'll get a measurement, with a percentage
of 115K (14400 Bytes/Sec..the port speed on the portmaster port) with a
28.8 modem. Also, I tried bringing the MaxSpeed to 7200, which I though
better reflected something closer to the true throughput on a modem using
compression, and mrtg complained about the MaxSpeed value needing to be
smaller than the maxint value (which it was). Anyway, I'd like to know if
anyone else is using MRTG in this capacity.

Drew