When realizing
pipeline forwarding Pipeline forwarding (PF) applies to packet forwarding in computer networks the basic concept of '' pipelining'', which has been widely and successfully used in computing — specifically, in the architecture of all major central processing units (C ...
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 In Telecommunication and Computer networking, time-driven switching (TDS) is a node by node time variant implementation of Circuit switching, where the propagating datagram is shorter in space than the distance between source and destination. With T ...
(TDS)
and
time-driven priority Time-driven priority (TDP)
is a synchronous packet scheduling technique that implements UTC-based pipeline forwarding
and can be combined with conventional IP routing to achieve the higher flexibility than another pipeline forwarding implementation ...
(TDP)
and can be used to create pipeline forwarding parallel network in the future Internet.
References
{{DEFAULTSORT:Synchronous Virtual Pipe
Computer networking