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Traffic Management for High-Speed Networks (1997) / Chapter Skim
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CreditNet ATM Switch
Pages 16-19

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
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From page 16...
... These include ATMlayer credit-based flow control, per-VC round-robin cell scheduling, multicast support in hardware, highly programmable microprocessor-based switch port cards, and built-in instrumentation for performance measurement. (Independently, Digital Equipment Corporation (DEC)
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From page 17...
... When a cell arrives at the switch, the input port broadcasts the cell's circuit identifier and address in the common memory on the anival bus on the backplane. Each output port monitors this backplane; when a port notices that a cell has amved for a circuit that leaves that port, it adds the cell's memory address to a queue.
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From page 18...
... Experimental Network Configurations The CreditNet switch has been used to experiment with TCP performance over ATM networks. The experiments described below use two network configurations in a LAN environment.
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From page 19...
... The hardware keeps track of the total number of cells sent by each VC and the number of cells buffered for each VC. Measured Performance on CreditNet Experimental Switches ATM-layer credit-based flow control resolves some TCP performance problems over ATM networks when packets are lost because of congestion t!
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Key Terms

  • common memory
  • allocation engine
  • creditnet switch
  • bottleneck link
  • atm switch

  • memory location
  • buffer memory
  • port module
  • output port
  • circuit identifier

  • departure bus
  • input port
  • tcp performance
  • atm networks
  • arrival bus

  • bus tells
  • cell cycle
  • port cards
  • port sends
  • causes tcp

  • network configurations
  • switch control
  • preceding switch
  • free slots
  • port monitors

  • discards data
  • total bandwidth
  • signaling standard
  • link interface
  • cells buffered


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