Page 639 - Cloud computing: From paradigm to operation

XaaS 3

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Pre-conditions
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Post-conditions
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Derived – Optimized and fine-grained traffic engineering (refer to clause 9.8)
requirements – Coexistence with legacy network services and functions (refer to clause 9.9)
– Centralized control view and abstraction view of resources (refer to clause 9.10)

II.4.2.5 NaaS connectivity use case for performance on demand

Title NaaS connectivity use case for performance on demand

Description CSC requests CSP to provide on-demand network performance (such as bandwidth
quantities, maximum latencies and other QoS parameters), which includes dynamic
establishment, change and resized capacity of links. However, traditional solution based on
human intervention lacks automation capabilities which make it difficult to deliver self-
provisioned services and respond to time-sensitive changes in network performance
requirements. Additionally, frequent changes sometimes result in congestion and
instability because traffic, which comes from multiple sources, shares the same network
link.
CSP provides CSC the appropriate control in order to request services through a portal and
to shield the underlying physical network to the CSC.
Roles CSC, CSP

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