Reduce zenmap topology noise (patch)

[Anders Sundman <anders () 4zm org>]

Hi,

When running many traceroutes that traverse the same "anonymous" hop 
between two known hosts, zenmap creates a new node in the graph for each 
traceroute. This introduces a lot of unnecessary clutter in the graph. 
200 traceroutes passing 2 (physical) anonymous devices currently 
generates 400 nodes in the topology graph.

Sure, it might be a new physical anonymous device each time, but it 
most likely isn't. Even if it is, I don't think it makes sense to 
represent them as two distinct nodes (since there is no way to tell them 
apart).

I suggest combining nodes in the graph that represent anonymous hops 
between two known devices.

         / anon_1 \
..-> ip_a          ip_b -> ..  => .. -> ip_a -> anon_1 -> ip_b -> ..
         \ anon_2 /


Here is a patch implementing this behavior:

http://www.4zm.org/files/2011/integration.py.diff

Regards,
Anders
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