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Date:      Thu, 5 Sep 2002 10:04:01 -0700
From:      "Noah Davidson" <Noah@oopz.com>
To:        "Wim Livens" <wim@livens.net>, <freebsd-isp@freebsd.org>
Subject:   RE: Network diagrams
Message-ID:  <3A785FAFBB8A8F4FA8CBD0485FCF4591F2C2@xela.oopz.com>

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If you are using visio, I know visio 2002 has a network auto discovery
feature, where it will go out and find nodes on the network.  I am not
sure witch versions (i.e. standard, professional ...) that this is with.

Good luck.
Noah

-----Original Message-----
From: Wim Livens [mailto:wim@livens.net]=20
Sent: Thursday, September 05, 2002 8:00 AM
To: freebsd-isp@freebsd.org
Subject: Network diagrams



I'm looking for a way to automatically generate a network diagram image
showing IP addresses, hostnames and interface names.

We're running an ISP access network (about 20 nodes) and I don't want to
update visio drawings manually while all topology info is in a database.
Besides that, I would like to generate a similar drawing for the
customer's access link and their router on a web portal.  I could
probably do the latter with GD.pm, but I feel a bit like reinventing the
wheel and rather have a more generic solution.

The database contains a table like this:

 IPaddr, hostname, interface, network

I understand I will need to supply some hints for the layout generation,
like a rank or coordinates for each node.

I looked at caida.org, but these are all for large backbone networks.

I've also been playing with dot and neato by generating the input file
from our database, but I can't get it to produce a decent layout, the
"ranking" feature of dot seems too limited.  W.r.t. neato, being an
access network, there is a clear hierarchy in the nodes, so a
spring-model graph layout is not suited either. =20

Any ideas ?

thanks and hoping it was not too far off-topic,

Wim.

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