The highly dynamic character of a mobile ad-hoc network (MANET) poses significant challenges on network communications and resource management. Previous work on routing in MANETs has resulted in numerous routing protocols that aim at satisfying constraints such as minimum hop/distance or low energy. Existing routing protocols often fail to discover stable routes between source and sink when rou...

Mobile Ad hoc Networks (MANET) are characterized by multi hop wireless connectivity, infrastructure less environment and frequently changing topology. Wireless links in MANET are highly error prone and can go down frequently due to mobility of nodes. Most reactive routing protocols do not maintain routing information at the node, on link failure typically a route error message is sent to the so...

A central characteristic of ad hoc mobile networks is the frequent changes of their topology. This is the source of many problems that need to be solved. AODV is an on-demand routing protocol for decreasing maintenance overhead in ad hoc networks. However, some path breaks can cause significant overhead and transmission delays. If the maintenance overhead of the routing table can be reduced, ta...

The IBM RS 6000 SP is one of the most successful commercially available multicomputers. SP owes its success partially to the scalable, high bandwidth, low latency network. This paper describes the architecture of Switch2 switch chip, the recently developed third generation switching element which future IBM RS 6000 SP systems may be based on. Switch2 offers significant enhancements over the exi...

The eeciency with which the routing protocol of a multihop packet-radio network uses transmission bandwidth is critical to the ability of the network nodes to conserve energy. We present and verify the source-tree adaptive routing (STAR) protocol, which we show through simulation experiments to be far more eecient than both table-driven and on-demand routing protocols proposed in the recent pas...

The e ciency with which the routing protocol of a multihop packet-radio network uses transmission bandwidth is critical to the ability of the network nodes to conserve energy. We present and verify the source-tree adaptive routing (STAR) protocol, which we show through simulation experiments to be far more e cient than both table-driven and on-demand routing protocols proposed in the recent pas...