Debanjan Saha

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In order to stem the increasing packet loss rates caused by an exponential increase in network traffic, the <sc>ietf</sc> has been considering the deployment of active queue management techniques such as <sc>Red</sc> [14]. While active queue management can potentially reduce packet loss rates in the Internet, we show that current techniques are ineffective(More)
In order to stem the increasing packet loss rates caused by an exponential increase in network traffic, the IETF is considering the deployment of active queue management techniques such as RED [13]. While active queue management can potentially reduce packet loss rates in the Internet, this paper shows that current techniques are ineffective in preventing(More)
This paper describes and evaluates Stochastic Fair Blue(SFB), a novel technique for enforcing fairness among a large number of flows. SFB scalably detects and rate-limits non-responsive flows through the use of a marking probability derived from the BLUE queue management algorithm and a Bloom filter. Using analysis and simulation, SFB is shown to(More)
The Internet today provides no support for privacy or authentication of multicast packets. However, an increasing number of applications will require secure multicast services in order to restrict group membership and enforce accountability of group members. A major problem associated with the deployment of secure multicast delivery services is the(More)
Most parallel jobs cannot be fully parallelized. In a homogeneous parallel machine | one in which all processors are identical | the serial fraction of the computation has to be executed at the speed of any of the identical processors, limiting the speedup that can be obtained due to parallelism. In a heterogeneous architecture, the sequential bottleneck(More)
This paper exposes an inherent weakness in current active queue manage ment techniques such as<italic>Red</italic>in that they rely on queue lengths to indicate the severity of congestion. In light of this observation, a fundamentally different active queue management algorithm called<italic>Blue</italic>is proposed.<italic>Blue</italic>uses packet loss and(More)
The last couple of years has seen a growing momentum towards using the Internet for conducting business. One of the key enablers for business applications is the ability to setup secure channels across the internet. The Secure Sockets Layer (SSL) protocol provides this capability and it is the most widely used transport layer security protocol. In this(More)
In this paper, we investigate the suitability of embedding Internet hosts into a Euclidean space given their pairwise distances (as measured by round-trip time). Using the classical scaling and matrix perturbation theories, we first establish the (sum of the) magnitude of <i>negative</i> eigenvalues of the (doubly-centered, squared) distance matrix as a(More)
We propose a flow-control scheme for multicast ABR services in ATM networks. At the heart of the proposed scheme is an optimal secondorder rate control algorithm, called the -control, designed to deal with the variation in RM-cell round-trip time (RTT) resulting from dynamic “drift” of the bottleneck in a multicast tree. Applying two-dimensional rate(More)