The Reliable Multicast Research Group Meeting

Arlington, Virginia

December 1998 

Abstracts and presentation slides

Target Goals for RM Congestion Control Algorithms
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Brian Whetten,GlobalCast Communications

Strawman Congestion Control Specifications

Mark Handley, ACIRI Sally Floyd, ACIRI

Congestion Control Using Dynamic Rate and Window

Dah Ming Chiu, Sun Labs
Abstract: Examines the advantages of using window and rate as the control parameter in a transport's congestion control. Proposes a way to combine the use of both window and rate as controls to get the best of both worlds - smooth transmission with bounded losses (the STBL algorithm). The algorithm has two phases. In the first, a congestion window is dynamically selected at the sender. Subsequently, congestion control is based on rate. Finally, various suggestions for applying STBL to multicast congestion control were discussed.

Congestion Control

Jamal Golestani, Bell Laboratories

Update on Scalable Session Message

Sally Floyd, ACIRI

Rate-Based Fair Multicast Congestion Control

Injong Rhee, NCSU

Round Trip Estimation for Multicast Congestion Control

Anindya Basu, Bell Laboratories
Abstract: In multicast communication, the estimation of receiver round trip times is necessary for congestion control. For example, in rate based regulation schemes, round trip times may be required for the proper adjustment of the transmission rate. This scheme estimates round trip times in a way that avoids the problem of ack implosion at the source by using a hierarchical tree organization of receivers in a multicast group for congestion feedback. At the same time, it does not require measurement of one-way delays, so that clock synchronization between the source and the receivers is unnecessary. Furthermore, this scheme works even if the network layer topology for multicast and the transport layer topology for congestion feedback are different and do not add significantly to the overheads.

Simulation Study of Monitor-Based Flow Control for One-to-Many Bulk RM in NS2 with Regard to TCP-Friendliness

Tetsuo Sano, NTT
Abstract: Presents the simulation study of the evaluation of MBFC in  regard to TCP-friendliness. The simulation was done in NS2. Researchers were able to confirm the effectiveness of MBFC by  adjusting system parameters properly. Moreover, they discovered that: (1) setting the transmission rate to the worst receiver leads to an extremely unfair bandwidth sharing occupied by TCP flow, (2) if RM only experiences a relatively small loss, it should not give up its bandwidth, otherwise TCP monopolizes it; and,  (3) introducing RED gateways leads to more desirable results for MBFC than using normal droptail gateways. These findings suggest that routers should introduce a mechanism to punish self-complacent traffic employing no or poor adaptive CC mechanisms.

The MINC (Multicast Inference of Network Characteristics) Project

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Don Towsley, UMass

Generic Multicast Transport Service (GMTS) "An Architecture Update"

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Brad Cain, Bay Networks and Don Towsley, University of Massachusetts

LMS Performance and Applications

Christos Papadoulos, WUSTL

Multicast Security: Towards a Standardized Solution
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Ran Canetti, IBM Research

Roger Kermode, Motorola
 

Updated 3/3/99