Testing and analyzing TCP performance in a wireless-wired mobile ad hoc test bed

TCP is the most used connection-oriented transport protocol in the Internet today. However, TCP has a number of problems when the connections are running over wireless links. This paper addresses some of them for wireless-wired ad hoc networking. We have made a real-life testbed for experimenting and analyzing TCP connections from a multi-homed ad hoc network into the global Internet. Through a set of experiments, we show how TCP behaves when switching gateways. The experiments are carried out in a mobile ad hoc network running a pro-active routing protocol, namely the OLSR protocol. The testbed and initial results are our first step for making an improvement to TCP for ad hoc networking.