A multipath self-routing switch
The multipath, self-routing technique associated with a multislot cell transfer mode reduces the switching element complexity and allows for realization of all its functions in a single-chip ISE of relatively large size. The described design work demonstrates the feasibility of the switching technology fully supporting the MPSR switching architecture with its first implementation based on the ISE 16 x 16 VLSI and switch module 64 x 64 the board at the leading edge of advanced technology. The MPSR switch fabric is upward compatible with the target ISE 32 x 32 and SM128 switching technology. Two levels of distributed control resources have been incorporated in the MPSR transport equipment. The OBC per individual PBA (switch module or link termination board), together with the MTR, controls and monitors all transport functions of the on-board VLSI circuits, and provides high-speed control communication capabilities with other RCC/OBC controllers via the switch fabric. The RCC in each rack controls and supervises the OBCs of boards equipped in that rack, autonomously performs configuration management, maintenance, traffic monitoring, and internal connection control functions closely related to the ATM transport equipment. It provides a loose coupling interface with CSs in charge of communication services and global OAM functions. The expandable MPSR switch fabric supported by its embedded distributed controllers exhibit high throughput/delay performance. We have presented results on the ISE buffer size engineering for 10[sup [minus]10] overall through-switch cell loss ratio based on analytical methods verified by extensive simulations, on the derived total cell transfer delay (79/246 [mu]s for average/maximum delay), and on the engineering of the output buffer capacity. 4 refs., 6 figs.
- OSTI ID:
- 7283429
- Journal Information:
- IEEE Communications Magazine (Institute of Electrical and Electronics Engineers); (United States), Vol. 31:4; ISSN 0163-6804
- Country of Publication:
- United States
- Language:
- English
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