Network Save States

The DES-Testbed offers a sophisticated setup for experimentation and evaluation of wireless multi-hop networks. Over one hundred wireless mesh routers, equipped with three IEEE 802.11 transceivers and one MSB-A2 sensor node, allow real world heterogenous network experiments. When running experiments, many parameters can be changed. Often the number of combinations of parameters needed to get useful results is very large and therefore make experimenting very time consuming.

As there is too much interference during working hours caused by regular WiFi usage, experiments can only run by night or at weekends. This limits one experiment time slot to a maximum of 72 hours.

In order to make longer experiments possible, we propose to pause an experiment at the end of one time slot, saving it's state so it is possible to continue in the next time slot. Using these Network Save States, it is theoretically possible to run experiments with weeks or even months of runtime.

Objectives

• Collect requirements of Network Save States
• Compare and evaluate different approaches
• Design and implement Network Save States for the DES-Testbed