Document Type
Technical Report
Publication Date
1991-07-01
DOI:
10.7936/K7K35S1D
Technical Report Number
WUCS-91-39
Abstract
This paper discusses the unfairness issue arising in a 802.6 DQDB network at high loads-- when the traffic demand to a bus exceeds the capacity of that bus. As per the 802.6 protocol, at heavy loads, the end nodes along a bus experience longer delays than the other nodes. The origin and remedy of this heavy load unfairness is discussed. An access control scheme is proposed as a solution. The comparison of the proposed scheme with 802.6 protocol is presented. The simulation results and performance characteristics are discussed under several types of loads. With symmetric load conditions under the proposed scheme, all active nodes along a bus experience almost the same access delay and packet loss characteristics. Performance under several other load condition are also found to be satisfactory.
Recommended Citation
Kumar, Lakshmana N. and Bovopoulos, Andreas D., "An Access Protection Solution for Heavy Load Unfairness in DQDB" Report Number: WUCS-91-39 (1991). All Computer Science and Engineering Research.
https://openscholarship.wustl.edu/cse_research/657
Comments
Permanent URL: http://dx.doi.org/10.7936/K7K35S1D