Title page for ETD etd-06102012-040438

Type of Document

Master's Thesis

Author

Chu, Tiensuu

URN

etd-06102012-040438

Title

Double linked backbone ring interconnected network

Degree

Master of Science

Department

Electrical Engineering

Advisory Committee

Advisor Name	Title
Ha, Dong Sam	Committee Chair
McKeeman, John C.	Committee Member
Midkiff, Scott F.	Committee Member

Keywords

Ring networks (Computer networks)

Date of Defense

1989-12-15

Availability

restricted

Abstract

The token ring has several advantages over other networks, especially under a heavy load. However,
Bux and Grillo showed that all desirable characteristics of IEEE 802.2 and 802.5 protocols for a
single token ring are severely degraded in an interconnected token ring network. In order to address
the problem, Bux and Grillo suggested a method of dynamically adjusting the size of windows depending
on the traffic of a network. In this thesis, a different method of addressing the problem
was proposed. The proposed method is to add a secondary transmission link to the backbone ring
of a network to form a double linked backbone ring network.
Simulation results show that the most influential element contributing to the degradation of performance
is congestion at the bridges in a network. The processing speed of bridges for the proposed
double linked backbone ring network is essentially double that of the original network. The
increased processing speed of the bridges enhances the performance of the network. Experimental
results for the utilization, throughput and response time of the original network and the proposed
double linked backbone ring are presented:

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