Lampros Kalampoukas

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We describe a new algorithm for rate allocation within the individual switches of an ATM network implementing a rate-based congestion control algorithm for Available Bit-Rate (ABR) traac. The algorithm performs an allocation in (1) time, allowing it to be applied to ATM switches supporting a large number of virtual circuits. When the total available(More)
We study the performance of TCP in an internetwork consisting of both rate-controlled and nonrate-controlled segments. A common example of such an environment occurs when the end systems are part of IP datagram networks interconnected by a rate-controlled segment, such as an ATM network using the available bit rate (ABR) service. In the absence of(More)
The sharing of a common buffer by TCP data segments and acknowledgments in a network or internet has been known to produce the effect of <i>ack compression</i>, often causing dramatic reductions in throughput. We study several schemes for improving the performance of two-way TCP traffic over asymmetric links where the bandwidths in the two directions may(More)
—We discuss a hardware implementation of an explicit rate allocation algorithm for support of Available Bit Rate (ABR) service in ATM switches. We then demonstrate the effectiveness of the algorithm at the network-level through measurements on the actual implementation in a network testbed. The rate allocation algorithm has several desirable properties ,(More)
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