2 Data-centric protocols 2 26/105 Reactive protocols: on demand onlyRoute Request information about paths is not kept; a path is discovered on demand only, by flooding the network with Route Request packages Drawbacks:  on demand path discovery introduces significant delays  flooding the network can lead to severe network congestion Examples: can be found, in detail, in [10]  AODV – Ad-hoc On-demand Distance Vector  DSR – Dynamic Source Routing  TORA – Temporally Oriented Routing Algorithm