Network diagram software

David Andersen dga at
Wed Feb 11 14:48:24 UTC 2009

On Feb 11, 2009, at 9:42 AM, Ross Vandegrift wrote:
> I'd like to put a second request.  I often want to very quickly
> mock-up a diagram that I'm going to use for myself or for internal
> purposes.
> Is there any application that takes some kind of *simple* description
> and produces a (possibly not so beautiful) picture?  For example, I
> might say something like:
> 	Router(rtr1) connects to vlan 100
> 	Router(rtr2) connects to Router(rtr1) via T1
> 	switch(sw1) connects to vlan100
> 	switch(sw2) connects to Router(rtr2)
> 	A few hosts connect to Switch(sw1)
> 	A few hosts connect to Switch(sw2)

The aforementioned graphviz program "dot" (and friends) will do  
exactly this.

There's a command-line version and a spiffy GUI version for the mac.

It's a great way to go.  It may be unsurprising that it was an at&t  


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