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
  • Ring networks (Computer networks)
Date of Defense 1989-12-15
Availability restricted
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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