Content for TS 28.525 Word version: 17.0.0
6 Specification level requirements
6.1 Requirements
6.2 Actor roles
6.3 Telecommunications resources
6.4 Use cases
$ Change History
6 Specification level requirements p. 15
6.1 Requirements p. 15
6.1.1 Requirements for Itf-N p. 15
6.1.2 Requirements for Os-Ma-nfvo p. 15
6.1.3 Requirements for Ve-Vnfm-em p. 18
6.1.4 Requirements for Ve-Vnfm-vnf p. 18
6.2 Actor roles p. 19
6.3 Telecommunications resources p. 19
6.4 Use cases p. 19
6.4.1 VNF Instance use cases p. 19
6.4.1.1 VNF identifier creation p. 19
6.4.1.2 VNF instantiation p. 20
6.4.1.2.1 VNF instantiation initiated through Ve-Vnfm-em p. 20
6.4.1.2.2 VNF instantiation initiated through Os-Ma-nfvo p. 20
6.4.1.3 VNF scaling p. 21
6.4.1.4 VNF instance termination p. 22
6.4.1.4.1 VNF instance termination initiated through Ve-Vnfm-em p. 22
6.4.1.4.2 Remove VNF instance from NS through Os-Ma-nfvo p. 22
6.4.1.5 Notifications about VNF lifecycle changes p. 23
6.4.1.6 Enabling/disabling the auto-scaling of a VNF instance p. 23
6.4.1.7 Retrieve VNF instance information from VNFM by EM p. 24
6.4.1.8 Retrieve VNF instance information by NM through NFVO as part of the NS query p. 24
6.4.1.9 Modify non-application information and non-application configuration attributes of a VNF instance by NM through NFVO as part of NS update p. 25
6.4.2 VNF Package use cases p. 25
6.4.2.1 VNF Package on-boarding p. 25
6.4.2.2 VNF Package enabling p. 26
6.4.2.3 VNF Package disabling p. 26
6.4.2.4 VNF Package deleting p. 26
6.4.2.5 Delete VNF Package operation, when in use p. 27
6.4.2.6 Abort VNF Package deletion operation p. 27
6.4.2.7 VNF Package querying p. 28
6.4.2.8 Fetch VNF Package operation p. 28
6.4.2.9 Fetch On-boarded VNF Package Artefacts operation p. 29
6.4.2.10 Notify operation on VNF package management interface p. 29
6.4.2.11 Subscribe operation at the VNF Package management interface p. 30
6.4.3 NS Instance use cases p. 31
6.4.3.1 NS instantiation p. 31
6.4.3.1.1 Instantiation of a new NS p. 31
6.4.3.1.2 Instantiation of a new NS with existing VNF instances and new VL instances p. 32
6.4.3.1.3 Instantiation of a new NS with existing NS instances and new VL instances p. 32
6.4.3.2 NS instance termination p. 33
6.4.3.3 NS instance querying p. 33
6.4.3.4 NS scaling using VNF scaling operation initiated through Os-Ma-nfvo reference point p. 34
6.4.3.5 Updating an NS instance to correspond to a different NSD version p. 35
6.4.3.6 Associating a different NSD version to an NS instance as part of NS update p. 36
6.4.3.7 Addition of a new VL to an existing NS instance p. 36
6.4.3.8 Addition of an existing VNF instance to an existing NS instance p. 37
6.4.3.9 Addition of a new SAP to an existing NS instance p. 37
6.4.3.10 Notification regarding NS instance lifecycle changes p. 38
6.4.3.11 Subscription regarding NS instance lifecycle changes p. 38
6.4.3.12 Create NS Identifier p. 39
6.4.3.13 Delete NS instance identifier p. 39
6.4.3.14 Addition of PNF to the NS instance p. 40
6.4.3.15 Add an existing VNF instance with connectivity p. 40
6.4.3.16 Add external connectivity to a PNF or VNF instance p. 40
6.4.3.17 Add a virtual link to a NS instance p. 41
6.4.3.18 Change external connectivity to a PNF or VNF instance p. 42
6.4.3.19 Add VNF forwarding graph to a NS instance p. 42
6.4.3.20 Update VNF forwarding graph in a NS instance p. 42
6.4.4 NS Descriptor use cases p. 43
6.4.4.1 NS Descriptor (NSD) On-boarding p. 43
6.4.4.2 Enabling NS Descriptor instance p. 44
6.4.4.3 Disabling NS Descriptor instance p. 44
6.4.4.4 Query NSD operation p. 45
6.4.4.5 Delete NS Descriptor operation, when in use p. 45
6.4.4.6 Delete NS Descriptor operation, when not in use p. 46
6.4.4.7 Updating NSD instance p. 46
6.4.4.8 Updating NSD user defined data p. 47
6.4.4.9 Subscribe to NSD change notifications p. 47
6.4.4.10 Notify operation on management changes in NSDs p. 48
6.4.5 PNFD Use Cases p. 48
$ Change History p. 51
