Routing A ware Distributed Service Discovery Architecture with Intelligent Message Routing

Distributed Service (or resource) Discovery (DSD) is becoming an important research
area in Service Oriented Computing (SOC) because many software applications are
now developed with services from different vendors. Most of the current DSD
approaches follow the techniques used in Peer to Peer (P2P) applications. It is
estimated that 70% of the Internet traffic today is consumed by these P2P
applications. Also, the volume of P2P traffic is on the rise. P2P and DSD applications
function by forming an overlay on top of the existing IP layer (underlay layer). The
query routing mechanism of the current P2P applications functions purely on the
overlay without incorporating the topological and routing knowledge of the underlay.
Consequently, Internet Service Providers (ISPs) are tested to their limits due to
underlay-ignorant query forwarding that are employed by the overlay applications
such as P2P and DSD. This underlay-ignorant query forwarding leads to inefficient
usage of the underlying links because the peers in the overlay are ignorant of the
location of their neighbours in the underlay. As a result, ISPs need to handle large
volumes of traffic as transiting nodes, which results in increased inter-ISP traffic.
Moreover, the neighbours that could be reached through the same path in the underlay
are not known in the overlay and therefore, the traffic is redundantly sent in the
underlying links consuming their bandwidth and causing high inter-layer
communication overhead. To alleviate these problems that are caused by underlay�ignorant query forwarding in the overlay, this research proposes to move the query
routing process from the overlay layer to the Internet Protocol (IP) layer. This
research focuses on providing the IP layer with both the service location information
and message level knowledge to minimise the standoff between the ISPs and P2P
based DSD applications. For this purpose, it is proposed to employ an intelligent
message routing by implementing Application Oriented Networking (AON) at the
routing layer of the systems that are based on DSD architecture. A suitable query
routing algorithm was developed and tested with the DSD architecture.