Thousands of hosts on a gigabit LAN, maybe not

Joe Hamelin joe at
Fri May 8 23:50:17 UTC 2015

On Fri, May 8, 2015 at 11:53 AM, John Levine <johnl at> wrote:

> Some people I know (yes really) are building a system that will have
> several thousand little computers in some racks.  Each of the
> computers runs Linux and has a gigabit ethernet interface.

Though a bit off-topic I ran in to this project at the CascadeIT
conference.  I'm currently in corp IT that is Notes/Windows based so I
haven't had a good place to test it but the concept is very interesting.
They distributed way they monitor would greatly reduce bandwidth overhead.

The Assimilation Project is designed to discover and monitor
infrastructure, services, and dependencies on a network of potentially
unlimited size, without significant growth in centralized resources. The
work of discovery and monitoring is delegated uniformly in tiny pieces to
the various machines in a network-aware topology - minimizing network
overhead and being naturally geographically sensitive.

The two main ideas are:

   - distribute discovery throughout the network, doing most discovery
   - distribute the monitoring as broadly as possible in a network-aware
   - use autoconfiguration and zero-network-footprint discovery techniques
   to monitor most resources automatically. during the initial installation
   and during ongoing system addition and maintenance.

Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474

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