Active topology measurements on the African Internet have showed that over 75% of the intraAfrica
traffic destined for Africa's National Research and Education Net- works (NRENs) uses
intercontinental links, resulting in high latencies and data transmission costs. The goal of this
work is to investigate how latency-based path selection using Locator/Identifier Separation
Protocol (LISP) and Software Defined Networking (SDN) in NRENs can be used to reduce
inter-NREN latencies. We present aspects of an experimental prototype implementation for realtime
topology probes to discover lower-latency remote gateways and dynamic configuration of
end-to-end Internet paths. Simulation results indicate that ranking remote ingress gateways, and
dynamic configuration of end-to-end paths between gateways can lower the average latency for
inter-NREN traffic exchange.