Hierarchical routing on unstructured identifiers

In this paper we follow the vision that the IP address hierarchy is going to collapse and propose a novel routing and addressing method based on non-structured addresses. The proposed concept, called HUId, clearly separates intra-domain routing (i.e., routing between hosts within a network domain) and inter-domain routing (i.e., routing between networks). The separation is based on two different routing mechanisms and having two different identifiers. The scope of these identifiers, however, are not disjunct. This simple framework helps eliminating the need for a protocol covering and managing the border links. This paper investigates the benefits of such an architecture and mechanisms like mapping and fail-over with site multi-homing. Finally, we elaborate on reusing existing technologies to give a simple implementation guideline.