A path of relay nodes is set up in a mesh network (100) between a source node (102) and a destination node (104). During a phase of handling path request, PREQ, messages a cluster table is maintained in a node (123) and during a phase of handling path reply, PREP, messages this cluster table is utilized to establish node clusters (120) that comprise nodes that can relay subsequent messages between the source node (102) and the destination node (104).