Strategies of ATM and DQDB interconnection

Markus Ruemekasten

doi:10.1117/12.157001

15 October 1993 Strategies of ATM and DQDB interconnection

Markus Ruemekasten

Proceedings Volume 1975, Local and Metropolitan Area Networks; (1993) https://doi.org/10.1117/12.157001
Event: Video Communications and Fiber Optic Networks, 1993, Berlin, Germany

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.

Citation Download Citation

Markus Ruemekasten "Strategies of ATM and DQDB interconnection", Proc. SPIE 1975, Local and Metropolitan Area Networks, (15 October 1993); https://doi.org/10.1117/12.157001

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