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Synchronous virtual pipe
From Wikipedia, the free encyclopedia
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When realizing pipeline forwarding[1] a predefined schedule for forwarding a pre-allocated amount of bytes during one or more time frames along a path of subsequent switches establishes a synchronous virtual pipe (SVP). The SVP capacity is determined by the total number of bits allocated in every time cycle for the SVP. For example, for a 10 ms time cycle, if 20,000 bits are allocated during each of 2 time frames, the SVP capacity is 4 Mbit/s.
Pipeline forwarding guarantees that reserved traffic, i.e., traveling on an SVP, experiences:
- bounded end-to-end delay,
- delay jitter lower than two TFs, and
- no congestion and resulting losses.
Two implementations of the pipeline forwarding were proposed: time-driven switching (TDS) [2] and time-driven priority (TDP) [3] and can be used to create pipeline forwarding parallel network in the future Internet.[4]
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