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link layer performance

We continued several basic performance tests to calibrate the behavior of the CASA network and understand its performance characteristics. Using IOSC (Input Output Systems Corporation) HIPPI testers, we measured the available HIPPI-to-HIPPI bandwidth at approximately 132 Mbps over a single OC-3 fiber pair. In striped mode, we used a maximum of 6 OC-3 pairs and measured approximately 660 Mbps. Note that the H/S gateways optionally implement Forward Error Correction (FEC) and use one channel to transmit redundant data, reducing the number of available data channels to five.

Hans-Werner Braun
Wed Apr 19 20:12:08 PDT 1995