[mrtg] Interpreting the graphs...recommendations

Gabriel David Custer CUSTERG at cedarville.edu
Mon Nov 5 18:57:33 MET 2001

I've been running MRTG on a few of my 3Com 3300s for several weeks
now, and I'm trying use some of the information to decide if I should
try to make changes.  We arbitrarily set up a figure of having no more
than 100 nodes running on 100mbps switched copper ports per 100mb
fiber uplink.  I'm trying to determine if that is a reasonable guess. 
The MRTG graph indicates one of the 100 node uplinks averaging around
1.6% with maximimums (seldom) up to 20% of the fiber link.  For anyone
else use similar equipment for their edge switches, do you have a
standard number of nodes per uplink, or do you have a set percentage
of utilization you watch for prior to adding another uplink?  I can
add more 100mb fiber uplinks, but gigabit is currently cost
prohibitive due to excessive distance.

Thank you for your help...
Gabe Custer
Cedarville University

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