A multi-hop mesh network comprising a plurality of nodes, the plurality of nodes each comprising a receiver, a transmitter, a controller and memory storing program instructions. The plurality of nodes are suitable for participating in data relaying within the network. The plurality of nodes comprise a plurality of source nodes and a plurality of relay nodes. The plurality of source nodes advertise, via the respective transmitter at least one message in one or more advertising events, and adapt the duration of the advertising event. Each advertising event comprises the at least one message being advertised over one or more primary advertising channels. The plurality of relay nodes scan each of the one or more primary advertising channels to receive, via the respective receiver, the at least one message, and relay, via the respective transmitter, the at least one message, and adapt the duration of the scan of the one or more primary advertising channels based on reception of the at least one message during scanning.