Page 692 - Cloud computing: From paradigm to operation

3 XaaS

There is a need to guarantee the availability, confidentiality and integrity of the logging records held by the
NS monitoring and reporting functional component. For multi-tenant cloud services, there is also a need to
design access to the records so that particular tenants can only gain access to information about their own
tenancy and about no other tenancy.

8.3.2.4 NS policy management

The NS policy management functional component provides capabilities to define, store and retrieve policies
that apply to network services. Policies can include business, technical, security, privacy and certification
policies that apply to network services and their usage by NaaS CSCs.
Some policies can be general and apply to a network service irrespective of the customer concerned. Other
policies can be specific to a particular customer.

8.3.2.5 NS automation
The NS automation functional component provides capabilities for network service delivery including the
management and execution of network service templates and the orchestration of network services. The NS
automation functional component holds the network service templates which define the cloud computing
activities and workflows required to provision and deliver a specific entry in the NS catalogue.

Network service provisioning can be automated in order to support scalable resource operations, including
configuration and charging.

Network service administration activities of NaaS CSC can be capable of being automated and need not
require any intervention by NaaS CSP.

The NS automation functional component works with the NS provisioning functional component and the
service integration functional component to achieve its goals.
8.3.2.6 NS level management
The NS level management functional component provides capabilities for managing the service levels of a
particular network service, aiming to ensure that the network service meets the requirements of the SLA
which applies to the network service.
The NS level management functional component manages the capacity and performance relating to a
network service. This can involve the application of network service policies (e.g., a placement rule which
aims to avoid single points of failure).
The NS level management functional component obtains monitoring information from the NS monitoring
and reporting functional component in order to measure and record key performance indicators (KPIs) for
the network service. Capacity of network service is allocated or de-allocated based on the basis of these KPIs.
The NS level management functional component also keeps track of the overall state of allocated and
available resources. The comparison of allocated capacity against network service performance KPIs can
assist in the identification of current or potential bottlenecks, in support of capacity planning.

8.3.2.7 NS incident and problem management
The NS incident and problem management functional component provides capabilities for the capture of
network service incident or problem reports and managing those reports through to resolution.
Network service incidents and problems can be detected and reported by the NaaS CSP's systems, or they
can be detected and reported by NaaS CSCs.

8.3.2.8 NS inventory
The NS inventory functional component holds information of all network service instances. This information
is updated during the lifecycle of the network service instances, reflecting changes resulting from execution
of management operations on these network service instances.

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