Recovery Time Evaluation of Ad-hoc Routing Protocols in IoT-Blockchain <Abstract> When deploying the IoT-Blockchain system on an infrastructure-based network (e.g., Wi-Fi), we will face the single point of failure problem (e.g., failure of an access point harm the whole system). Using ad-hoc routing protocols can avoid such a problem, and the system can recover the communication automatically if an IoT device fails. This paper investigates the recovery time of two routing protocols (i.e., Optimized Link State Routing (OLSR) and a Better Approach To Mobile Ad-hoc Network (BATMAN)) in an IoT-Blockchain system after a network failure happened without and with a blockchain connection. We have used mininet-wifi and private Ethereum blockchain to build the IoT-Blockchain, where we deployed the two routing protocols. The evaluation results show that the performance of BATMAN is better than OLSRfs. Specifically, the recovery time of BATMAN is 8.485, 7.355 seconds faster than OLSR when not having and having a blockchain connection, respectively. |