[mrtg] Re: top 10 utilization graphs

Bradford Woodcock bwoodcoc at Genuity.com
Tue Dec 12 20:47:16 MET 2000


You would need scripting experience but here is how we approached a similar
requirement. I parse through all the html files and extract the target
names and values and write them out to a csv file every five minutes. Then
a quick sort on which value/column (5min current, average, etc) gives you
the topN. We can then produce topN against any of the values seen for all
links. A little extra logic even separates LAN from WAN links from ISLs. I
then even wrote a sorting function from a web page...pretty slick for topN.

One recommendation I would make to help you is to convince your boss to do
topN for links...not routers as a whole. First off this is more important
to the real issues of link performance and it also saves you from trying to
do math on values for all links of each router.

At 02:18 PM 12/12/2000 -0500, Thomas Silcox wrote:
>I'm using MRTG straight out of the box to monitor IfInOctets and IfOutOctets
>for over 300 Cisco routers.
>An index page points to each individual router for dwmy graphs.
>My boss wants a weekly report on the top 10 routers in terms of peak use and
>overall utilization.
>Any ideas where I should start?  I really don't want to manually click on
>each graph and keep track!!!
>I appreciate any advice.
>Thomas Silcox
>Traffic Engineering Technician
>MaxLink Communications
>1 Yonge Street
>Toronto, ON. M5E 1E5
>tsilcox at maxlink.com <mailto:tsilcox at maxlink.com>  
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