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March 10, 2003

Emulating the Internet for Enterprise Applications

The proposal I put together with Johannes for 'A Testbed for Highly-Scalable Mission Critical Information Systems' was selected for funding under the DURIP program.

The philosophy behind the testbed is to use a small high performance cluster (4 nodes) with 20 Fast Ethernet interfaces and an internal Gigabit ethernet interconnect to emulate the core of the Internet (or what ever topology you want to emulate). These FE interfaces are connected to a number of switches that provide the connection to all the end nodes. We make extensive use of VLANs to emulate the AD connections, and last mile connectivity. The goal is to run eventually with a 1000 physical nodes, the current first phase proposal was for 252 nodes. Each node has 3 ethernet connections, and we use software to emulate 3 end-nodes at each physical node. The experiments run the real software that you would eventually deploy, no simulated stuff.

For the end nodes we use a set of dense blade servers. 252 nodes means 14 racks of 18 blades. The whole end-node setup will fit into a single 42U rack.

Posted by Werner Vogels at March 10, 2003 04:09 PM