Title :
The DQDB protocol-what about fairness?
Author_Institution :
Dept. of Comput. Sci., Tech. Univ. of Aachen, West Germany
Abstract :
The author studies fairness issues of the distributed queue dual bus (DQDB) protocol, which is the draft of a standard proposed by IEEE 802.6 for metropolitan area networks (MANs). He shows that DQDB yields fair medium access for many realistic scenarios. It is found that DQDB is unfair in subnetworks interconnecting few stations and covering large distances. This scenario shows the limits for backbone networks interconnecting few stations scattered over large areas. For this special application, DQDB is questionable. Allocation of dedicated bandwidth (prearbitrated service) may be an appropriate solution
Keywords :
computer networks; protocols; queueing theory; DQDB protocol; IEEE 802.6; IEEE draft standard; MANs; dedicated bandwidth allocation; distributed queue dual bus; medium access control protocol; metropolitan area networks; prearbitrated service; Access control; Access protocols; Computer science; Media Access Protocol; Metropolitan area networks; Network topology; Payloads; Peer to peer computing; Throughput; Writing;
Conference_Titel :
Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE
Conference_Location :
Dallas, TX
DOI :
10.1109/GLOCOM.1989.63985