A. Legout & E. W. Biersack
Institut EURECOM, France
RLM  and RLC  are two well known receiver-driven
cumulative layered multicast congestion control protocols.
They both represent an indisputable advance in the area of
congestion control for multimedia applications. However,
there are very few studies that evaluate these protocols, and
most of the time, these studies conclude that RLM and RLC
perform reasonably well over a broad range of conditions.
In this paper, we evaluate both RLM and RLC and show
that they exhibit fundamental pathological behaviors. We
explain in which context these pathological behaviors happen,
why they are harmful, and why they are inherent to the
protocols themselves and cannot be easily corrected. Our
aim is to shed some light on the fundamental problems with