Synchronous virtual pipe
Encyclopedia
When realizing pipeline forwarding
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 20000 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:
Two implementations of the pipeline forwarding were proposed: time-driven switching
(TDS)
and time-driven priority
(TDP)
and can be used to create pipeline forwarding parallel network in the future Internet .
Pipeline forwarding
Pipeline forwarding 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 — and manufacturing — specifically in assembly lines of...
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
Pipeline forwarding
Pipeline forwarding 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 — and manufacturing — specifically in assembly lines of...
for the SVP. For example, for a 10 ms time cycle, if 20000 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
Time-driven switching
In Telecommunication and Computer networking, Time-Driven Switching 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...
(TDS)
and time-driven priority
Time-Driven Priority
Time-driven priority is a synchronous packet scheduling technique that implements UTC-based pipeline forwardingand can be combined with conventional IP routing to achieve the higher flexibility than another pipeline forwarding implementation known as time-driven switching or fractional lambda...
(TDP)
and can be used to create pipeline forwarding parallel network in the future Internet .