Flow spec algorithm
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A flow specification lists network flows along with their performance requirements and priority levels, which can take one of three forms: one-part for only best-effort flows, two-part for predictable and best-effort flows, or multi-part for guaranteed, predictable, and best-effort flows. A two-part flow spec describes predictable requirements in terms of total best-effort and predictable capacities, minimum delay, and maximum residual bandwidth, while a multi-part flow spec builds on two-part and adds individual guaranteed requirements for capacity, residual bandwidth, and delay.
Flow spec algorithm
- 1. A flow specification lists the flows for a network along with their performance requirements and priority levels. Flow specifications can take one of three types: one-part, or unitary; two-part; or multi-part.
- 3. A one-part flow-spec describes flows that have only best-effort requirements/flows(BF). A two-part flow-spec describes flows that have predictable requirements(P) and may include flows that have best-effort requirements/flows(BF). A multi-part flow-spec describes flows that have guaranteed requirements/flows(i) and may include flows that have predictable requirements(P)and/or best-effort requirements/flows(BF).
- 4. It is a mechanism to combine these (capacity, delay & RMA) performance requirements. To describe the composite performance for flow / group of flows.
- 6. For the predictable requirements , the flowspec has a total capacity for best –effort flows CBE and another capacity for p.redictable flows CP. for delay, the minimum delay is taken as delay requirement Dp. And the maximum RMA Rpis taken as RMA Requirment.
- 8. A multi-part flow spec is the most complex of flowspecs Building/Adding on a two –part flowspec to add guaranteed requirements. Best Effort capacity along with predictable capacity, delay, and RMA and each set (i) of guaranteed performance requirement is added individually. Shown as Ci Ri Di to the flowspec.
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