Calculating RAM Allocation Footprints for Wireless Mesh Nodes
Wireless mesh node RAM calculations require summing static link map data with dynamic scaling allocations for neighbor tables, queues, and security states.
AODV-v2
Meaning
Reactive routing mechanisms allow wireless nodes to establish dynamic multi-hop paths on an as-needed basis. The routing standard aodv-v2 operates by initiating path discovery only when a device has data packets queued for an active destination. It prevents the continuous exchange of periodic updates that otherwise deplete the energy supplies of battery-powered transceivers.
Route Discovery
Path requests propagate via broadcast messages to locate a destination. When an originating device has data to transmit, it broadcasts a route request, which intermediate nodes forward while recording reverse paths.
Metric Propagation
Link cost calculations determine the most efficient pathways by accumulating additive metrics along the route. The aodv-v2 protocol supports multiple metric types to represent hop counts or link quality indices. Nodes update these metrics as routing messages progress through each intermediate stage of the wireless link.
State Maintenance
Route maintenance processes monitor the health of active linkages and generate notifications when links fail. If a link breaks, the upstream node distributes a route error message to invalidate the broken path and trigger new discoveries. This behavior ensures that the routing table remains accurate and does not consume memory with dead entries, allowing networks to adapt to physical topology modifications without human intervention.