QoS-aware multicast routing for the Internet: the design andevaluation of QoSMIC
Shuqian Yan; Faloutsos, M.; Banerjea, A.
Networking, IEEE/ACM Transactions on
Volume 10, Issue 1, Feb 2002 Page(s):54 - 66
Digital Object Identifier 10.1109/90.986530
Summary:One of the main problems of the current Internet infrastructure is
its inability to provide services at consistent quality-of-service (QoS)
levels. At the same time, many emerging Internet applications, such as
teleeducation, and teleconferencing, require multicast protocols that
will provide the necessary QoS. In this paper, we propose QoSMIC, a
multicast routing protocol for the Internet, that provides QoS-sensitive
paths in a scalable, resource-efficient, and flexible way. QoSMIC
differs from the previous protocols in that it identifies multiple paths
and selects the one that can provide the required QoS. Two other key
advantages of QoSMIC are its flexibility and adaptivity. First, the
distribution tree does not have to be rooted at a preselected core
router. Second, we can tradeoff between efficiency metrics depending on
our needs; for example, we can tradeoff routing efficiency for a
reduction in the control messages. Extensive simulations show that our
protocol improves the resources utilization and the end-to-end
performance compared to the current protocols. Specifically, our
protocol reduces the call blocking probability by a factor of six and
reduces the end-to-end delay by as much as 90% compared to the PIM
protocol
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