TAILIEUCHUNG - Switching Theory: Architecture and Performance in Broadband ATM Networks phần 9

chúng tôi sẽ xem xét làm thế nào sản lượng xếp hàng một mình hoặc kết hợp với xếp hàng đầu vào có thể được thông qua trong một đệm nhân rộng đa mạng (BRBN), trong đó sắp xếp khác nhau và hoạt động của các mạng đa | Problems 335 . Problems Derive Equations from Equations . Provide the expression of the capacity for a non-blocking N X N switch with combined inputoutput queueing infinite buffer sizes speed-up factor K assuming that the packets losing the contention for the addressed outlets are discarded. Plot the capacity value found in Problem as a function of Nfor K 2 3 4 with values up to N 1024 N is a power of 2 and compare these values with those given by computer simulation in which losing packets are not discarded justify the difference between the two curves. Repeat Problem for N ro . Compare the switch capacity for K 2 3 4 so obtained with the values given in Table justifying the differences. Express the average packet delay of a non-blocking switch with combined input-output queueing infinite switch size and input buffer size speed-up factor K assuming that the tagged input queue and the tagged output queue are mutually independent. Use the appropriate queueing models and corresponding results described in Appendix by assuming also E n2 E nJ. Plot the average delay expressed in Problem as a function of the offered load p for the output buffer sizes Bo 2 4 8 16 and compare these results with those given in Figure justifying the difference. Express the range of capacity values of a switch with combined input-output queueing without internal backpressure with Bo 1 and increasing values of the speed-up factor K. Justify the values relevant to the two extreme values K 1 and K ro . Assuming that an infinite capacity is available for the shared queue of a switch with combined shared-output queueing and parameters K Bo find the queueing model that fully describes the behavior of the switch. Explain how the switch capacity changes in a non-blocking architecture with combined input-shared queueing if the packets must always cross the shared queue independent of its content. Switching Theory Architecture and .

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