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Evaluation Platform Approach: Combines OS Virtualization and Emulation Machine specifications 4 Intel Xeon MP CPU, 2.7GHz, 2MB cache 8GB RAM 300GB SCA SCSI drive Integrated 10/100 NIC 6 PCI-X slots 16 DIMM Slots (32GB max) Multiple real DTN system instances on single machine Connect to emulated network via virtual Ethernet bridge Flexible scripting of DTN scenarios and traffic, repeatable manage interactions with user-mode linux start processes, access interfaces, access dtnd CLI ethernet addresses to ns2 node ids copy link layer packet to appropriate interface after simulated loss/delay and error through network |