cibh | Cows in Black Helicopters -- an SNMP based traffic grapher

I suggest you run this on a modern linux box. Whichever you choose, use a package manager to install the dependencies.
gd: library for building png images
GD.pm: Perl module for accessing gd
net-snmp: SNMP library
Graphviz: (optional) to support graphviz input/output
Once you get the above packages built and installed you should be ready to run with cibh. CIBH is broken into two main parts - the perl modules and the scripts. To install the modules run the following commands:. The last step requires you to have write access to your to the perl library subdirs so you may need to run "sudo" or be root. If you don't have root access, you can use the local::lib package to install into a local directory structure, or you can use "carton" to run everything based off of the cpanfile.
This is the real configuration step. The file build-snmp-config is the one I use to do this. You could do it by hand, if you are sufficiently patient and have a small network, but I don't see that happening. The mib info table has four columns, the hostname, the mib, the command to run once the mib has been collected and a filename. The command can be anything that eval can handle in perl. I have provided three that I find useful:. You can combine these. I usually store interface gauges as GaugeAppend,Store. If you do CounterAppend,Store, the value stored by Store will be the "gauge-like" value, not the counter. This allows it to work with the mapping tools. build-snmp-config tries to figure out what kind of box it is going against, and if it is a cisco it uses some special cisco mibs for things like the cpu utilization. You may want to add your own oids for other router types.
Store - stores the mib value in the file with .text appended to the filename.
GaugeAppend - append the data with a timestamp and the value to the filename. The data is stored as integers in network order, 4 byte timestamp and 4 byte value.
CounterAppend - append the data in a similar way, but assume this data is coming from a counter, so get the last sample (stored in the file) and figure out the difference and store that - this makes a counter look like a gauge.