Rich Groves was scheduled to give a presentation at NZNOG'05 but was unable to make it due to immigration processing delays. He is going to give a (similar) presentation to WAND this Friday at 2pm at the University of Waikato. Sorry for the short notice, but if anybody would like to come, you would be welcome. Title "Creating a Passive Network Analysis Framework to Glean Internet Weather" Bio: Rich Groves is a former Principal Network Engineer at America Online and Network Architect at MCI and is now a Technologist at Endace as well as researcher for WAND. If anybody wants to come, please email me directly so I can keep track of numbers and I'll send you room details. The abstract of his planned NZNOG'05 talk was: The purpose of this project is to create a generic passive network monitoring framework for use with highly trafficked TCP applications. I will talk in depth about key performance indicators that we will use to assess the health of AOL Client streams as well as AOL Instant Messenger and ICQ. The location to glean this data is a number of tap points in front of the AOL Instant Messenger service. This is a staggering 400+ million TCP connects per day and places a veritable "Internet Weather Report" at our fingertips of round trip times, packet loss, latency and stability. This monitoring infrastructure will work as an "early warning" of negative client and transit network performance. Some other uses for this will be understanding the effects of changes during maintenance windows as well as providing data to compute a "user frustration index" that will give us more insight into client performance than active war dialers have. Richard Nelson richardn(a)cs.waikato.ac.nz WAND Network Research Group