Appendix B of the performance baseline text describes ways to generate scalable configurations such that a large switch with many ports can be fully loaded and tested with a minimum number generator(s). The text that was accepted in the September 1997 meeting of the ATM Forum requires using loopbacks that connect the output of a port to the input of the same port. Some switches do not allow this. Therefore, another more generalized method of preparing scalable configurations is presented in this contribution. This method allows the flexibility of connecting the output the same port or another port. We propose to replace the entire text of Appendix B with the main text of this contribution.

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