  The key requirement to routing in any telecommunication network, and
especially in Internet-of-Things (IoT) networks, is scalability. Routing must
route packets between any source and destination in the network without
incurring unmanageable routing overhead that grows quickly with increasing
network size and dynamics. Here we present an addressing scheme and a coupled
network topology design scheme that guarantee essentially optimal routing
scalability. The FIB sizes are as small as they can be, equal to the number of
adjacencies a node has, while the routing control overhead is minimized as
nearly zero routing control messages are exchanged even upon catastrophic
failures in the network. The key new ingredient is the addressing scheme, which
is purely local, based only on geographic coordinates of nodes and a centrality
measure, and does not require any sophisticated non-local computations or
global network topology knowledge for network embedding. The price paid for
these benefits is that network topology cannot be arbitrary but should follow a
specific design, resulting in Internet-like topologies. The proposed schemes
can be most easily deployed in overlay networks, and also in other network
deployments, where geolocation information is available, and where network
topology can grow following the design specifications.
