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This paper aims at finding fundamental design principles for hierarchical web caching. An analytical modeling technique is developed to characterize an uncooperative twolevel hierarchical caching system where the least recently used (LRU) algorithm is locally run at each cache. With this modeling technique, we are able to identify a characteristic time for(More)
In this paper, we address Ad-hoc on demand distance vector (AODV), a versatile routing algorithm for such ad-hoc networks to investigate its Internet connectivity and undertake simulation based performance evaluation. The simulation environments are based on the AODV models. To obtain better understanding of these models, simulations were performed under(More)
Next generation access routers and edge devices need to provide functionalities, for layer-4 packet forwarding and ®rewall/security checks. Consequently, a challenging issue concerns how to achieve fast packet ®ltering and forwarding at low cost. This paper studies the ̄ow caching mechanisms for fast layer-4 packet forwarding. We show by model analysis that(More)
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