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Proceedings Paper

Strategies of ATM and DQDB interconnection
Author(s): Markus Ruemekasten
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Paper Abstract

The paper presents and analyzes two alternatives of interworking modes for interconnection of IEEE 802.6 based Metropolitan Area Networks (MANs) and ATM based B-ISDN. The two alternatives are the `cell-to-slot interworking' and the `frame interworking.' The cell-to-slot mode modifies ATM-cells to DQDB-slots and vice versa, whereas the frame interworking mode reassembles ATM-cells and converts the resulting AAL frames to DQDB IMPDU frames. In the paper, simulation results of a DQDB network are presented, where one of the DQDB stations represents an IWU getting aggregated traffic from B-ISDN. The aggregated traffic is modelled by a mixture of various constant bitrate and variable bitrate traffic sources representing different real-time sources and background traffic. It turns out that the cell-to-slot interworking mode is much more useful for keeping bandwidth requirements of real-time traffic than the frame interworking mode which causes additional burstiness due to reassembly. Based on these results one can conclude that the cell-to-slot interworking mode is much more appropriate for real-time applications than the frame interworking mode.

Paper Details

Date Published: 15 October 1993
PDF: 11 pages
Proc. SPIE 1975, Local and Metropolitan Area Networks, (15 October 1993); doi: 10.1117/12.157001
Show Author Affiliations
Markus Ruemekasten, Univ. of Paderborn (Germany)


Published in SPIE Proceedings Vol. 1975:
Local and Metropolitan Area Networks

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