Performance comparison of IBETX routing metric over AODV and DSDV routing protocols

In networking, routing metrics provide a mechanism of predicting the cost of using a selected route; the most suited route is calculated using the routing protocol. The routing metric provides quantifiable values that can be used to judge the cost or efficiency of a specific route. This paper presents a comparison of the performance of the recently proposed IBETX routing metric over a reactive (AODV) and a proactive (DSDV) routing protocol. The performance differentials are analysed using varying traffic load and the number of sources or connections. The simulations results show that AODV that makes use of IBETX as the routing metric performs better with a lower number of connections and packet rate in terms of average end-to-end delay and normalised routing load when compared to DSDV that also makes use of the IBETX routing metric. As both packet rate and number of connections increases, it is shown that DSDV outperforms AODV in terms of throughput, average packet end-to-end delay and normalized routing load.