[mrtg] bandwidth utilisation using snmp v2

Andy Leahy aleahy at yahoo.com
Tue Jul 23 16:07:59 MEST 2002

I am using a config to capture the 64 bit counters from a cisco catalyst switch. The interfaces are consistantly running at 0.5-0.9% utilised. However mrtg consistantly reports 0% with an occasional rise to 1% utilised with the config below.

If i use the default configmaker instead of my config file it does report utilisation of around 0.7% however we want to see utilisation as a % not the bytes in/out that is created with this. 

I've checked out the config with somix and other posts here and cant see an error so any help would be great.


#Network Utilization 
Target[hostname.11nwutil]: (( at at*100 
Directory[hostname.11nwutil]: hostname
RouterUptime[hostname.11nwutil]:readcomm at hostname 
MaxBytes[hostname.11nwutil]: 100 
Title[hostname.11nwutil]: CR(hostname): KCH-CNR-6513-01 Percentage Bandwidth Used 
PageTop[hostname.11nwutil]: <H1>Percentage Network Bandwidth for Trunk to KCH-HNR-6513-01, Local Port 3/1, SNMP Interface 11 </H1> 
   <TR><TD>System:</TD><TD>KCH-CR-6513-01, Catalyst 6513, Asset Tag Number 19185 </TD></TR> 
   <TR><TD>IP:</TD><TD>hostname (</TD></TR> 
# Unscaled[hostname.11nwutil]: ymwd 
XSize[hostname.11nwutil]: 380 
YSize[hostname.11nwutil]: 100 
YLegend[hostname.11nwutil]: Network Util 
Colours[hostname.11nwutil]: GREEN#00eb0c,BLUE#0000ff,GRAY#AAAAAA,VIOLET#ff00ff 
Legend1[hostname.11nwutil]: Percentage of Available Bandwidth Used 
LegendI[hostname.11nwutil]:  Util: 
Options[hostname.11nwutil]: unknaszero, growright, nobanner 



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