Hi,
I am looking at Observium as an alternative / addition to Cacti and it looks really nice so far.
One
thing I do with Cacti is publish single graphs of bandwidth on core
routers and switches to websites (or wikis), so that other people can
see that current usage very fast without having to access Cacti.
This works by giving a guest (means: no login) read access and
then just using the URL for the graph (e.g. .../graph_image.php?local_graph_id=330).