D. Medhi and S. Guptan, ``Network Dimensioning
and Performance of Multi-Service, Multi-Rate Loss Networks with
Dynamic Routing,"
IEEE/ACM Trans. on Networking, Vol. 5, No. 6, pp. 944-957, December 1997.
Abstract
In this paper, we address a multi-service, multi-rate loss network environment with dynamic routing.
In this setting, we consider multiple traffic load periods (multi-hour) during
the day, and by observing network dynamics, we present a network dimensioning
model that consists of two-steps: a bandwidth estimation estimation step
followed by a multi-commodity flow model for multiple services and traffic
loads. For network operations, we discuss a probabilistic admission control
policy and three multi-service routing schemes. We have used a 10-node network
with multiple asymmetric traffic data sets (partially extracted from an actual
network) for our study. It was found that the capacity obtained using
the analytic network dimensioning model provides a good estimate of network
capacity required for meeting the grade-of-service goal for each service type
in each traffic load period; this observation is based on a simulated network
environment
that uses the proposed admission control and the dynamic routing schemes.
Our observation suggests that it may not be not necessary for the dimensioning
model to explicitly incorporate admission control policy, but admission control
is needed for network operation to provide desirable grade-of-service.
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