If you use Splunk and your network runs ExtremeXOS, check out this new Splunk App: https://apps.splunk.com/app/1780/
It's built to be run in stand-alone mode, so experiment with it a bit. Splunk does the heavy lifting and from that index, we built some great visualizations to help baseline and analyze your network. You can do things like trend your infrastructures use of memory, severity of log messages, device locations, etc.
Its a great tool, that I think you'll enjoy.
If you have any feedback, please send to me directly or firstname.lastname@example.org. Thanks!