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This page contains all of the posts and discussion on MemeStreams referencing the following web page: Real-time Blackhole Analysis with Hubble. You can find discussions on MemeStreams as you surf the web, even if you aren't a MemeStreams member, using the Threads Bookmarklet.

Real-time Blackhole Analysis with Hubble
by possibly noteworthy at 4:49 pm EDT, Jun 10, 2007

We present Hubble, a system designed to identify and diagnose reachability problems on the Internet in real-time. Using Hubble, we are able to evaluate the extent to which global reachability is violated: how many prefixes are reachable from some vantages and not others, and how long do these problems persist?

Whereas previous work focused on either reachability within a single AS or simple passive monitoring of BGP updates, we have designed Hubble to unify RouteViews and distributed vantage points into a system that can perform active probe monitoring and diagnosis of reachability problems to about 90% of the Internet's edge prefixes. Our results show that 10% of prefixes experience reachability problems on a given day.

Beyond identifying problems, Hubble gathers data and can trigger measurements to help troubleshoot and categorize commonly occuring reachability problems in real-time. Is a prefix currently unreachable from portions of the Internet? Is the problem due to issues with multi-homed failover? Is some AS dropping all traffic to the prefix? Hubble can provide answers to these questions.

See also, from last year, Towards IP Geolocation Using Delay and Topology Measurements.


 
 
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