Dave's Home Page

This is a map of WiscNet circuits that I generated automatically using addresses, to determine latitude and longitude of customer sites and hub routers, information about what circuits exist between routers, and gnuplot. The state outline is actually a plot of nearly 1200 latitude/longitude coordinate pairs defining its perimeter, which I found in the boundary directory at ftp://ftp.census.gov/pub/tiger/ (See the readme info.). I beleive this method would be suitable for mapping most WANs.

I produced this, with big help from http://tiger.census.gov, using addresses glommed from http://www.whowhere.com, then wrote a perl script which used http://maps.yahoo.com/yahoo to get the latitude and longitude values in this file. (Lastly, I cropped it then used giftopnm |ppmtogif -transparent rgb:7f/af/ff to make the background/water transparent.)

It's the Latency, Stupid. Stuart Cheshire's rant reminding us that bandwidth isn't the only factor influencing the Internet's performance. If you want to read more, try this:
http://www.stuartcheshire.org/papers/LatencyQuest.html

This is where you can find Tobi Oetiker's RRDTOOL. RRD is the Acronym for Round Robin Database. RRD is a system to store and display time-series data. I spend a lot of time using this stuff and have written some tools which use it.

flow-tools and cflowd are freely-available collection and analysis packages used with Cisco's flow-export feature.

This server functions as the archive base for comp.dcom.net-management, as well as for a place to bring together references to other applications and servers. In addition, this site acts as a mirror site for applications, utilities and FAQs pertinent to Network Management.

The CMU SNMP Library provides developers with a set of core functions allowing them to write SNMP agents and managers. The library will encode and decode all SNMP PDUs and variables; handle network connections; and return data in an easily parsable format.

Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features include: color support, message threading, MIME support, POP3 support, highly customizable - including key bindings, PGP support, ...
ELM users will find it quite painless to switch as the default key bindings are identical!

Fetchmail retrieves mail from remote mail servers and forwards it via SMTP, so it can then be be read by normal mail user agents such as elm(1) or mail(1) (or mutt!). It allows all your sytem MTA's filtering, forwarding, and aliasing facilities to work just as they would on normal mail.