Patent ID: 7768943

Claim:
A system comprising: a plurality of nodes forming a network, said plurality of nodes comprising source nodes and destination nodes, at least one of said source nodes being assigned a home address corresponding to a home sub-network; and a network-layer protocol provided at a layer above that of said network and configured to assign a care-of address in addition to the home address to said source node when outside the home sub-network; wherein a propagation limit restricts the travel of link-state information transmitted by said source nodes to a subset of destination nodes within said network and said propagation limit between one of said source nodes and one of said destination nodes is equal to or greater than a propagation parameter between said source node and said destination node, such that said propagation parameter is limited by said propagation limit; wherein said source node is configured to use and distribute packets originating from said network-layer protocol and wherein the propagation limit of each source node differs from the propagation limit of each destination node by no more than PP/5, where PP is equal to said propagation parameter between said source node and said destination node.