Page 664 - Cloud computing: From paradigm to operation

3 XaaS

Use case

Requirements – Storage migration (refer to clause 7.2.1)
– Storage snapshot (refer to clause 7.2.2)
– Storage backup (refer to clause 7.2.3)
– I/O performance (refer to clause 7.2.4)
– Storage resource reservation (refer to clause 7.2.5)

I.5 IaaS network service use case

Use case

Name IaaS use case on network
Abstract CSC uses network functions, such as IP address, VLAN, virtual switch, load balance and
firewall provided by the CSP
Roles CSC, CSP

Figure CSC
CSPSP
C

Network Computing
resource pool resource pool
Portal
Cloud infrastructure
Y.3513(14)_FI.5

Pre-conditions – CSC accesses the IaaS through portal with appropriate security mechanism and
(optional) retrieves the functions exposed that are related to network and computing, if needed.

Post-conditions

(optional)
Description – CSC accesses and queries the CSP portal to retrieve the list of supported network
functions (e.g., IP address, VLAN, virtual switch, load balance, firewall).
– CSC selects the appropriate network service from the query results and requests CSP
to create a network based on the selection.
– CSC requests the CSP to attach the created network with the related virtual machine.
– CSC manages and monitors the created network during its lifecycle. It includes, but not
limited to:
• bind the network connectivity service to the related virtual machine;
• query the network and its status;
• update, upgrade or scaling the network;
• execute performance metrics;
• manage the IP address pool;
• manage network services, such as VLAN, virtual switch, load balance, firewall,
gateway;
• manage tenants' network according to the SLA objectives.

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