Hi,
a while ago we startet the vis server project. Its aim is to supply a topology layout of the batman network. To overcome the problem that every node just knows its very own horizon we designed a vis server which collects vis topology messages from every node and generates the well known dot draw output. This output can be used by various programs to render a topology graphic. I just made some screenshots of our network rendered by olsrs3d (see s3d.berlios.de). You can find them here: https://www.open-mesh.net/batman/vis I will update the pictures once more hosts in Berlin have activated that feature and thus are visible on our topology.
Regards, Marek