1、 ETSI GS NFV 003 V1.2.1 (2014-12) Network Functions Virtualisation (NFV); Terminology for Main Concepts in NFV Disclaimer This document has been produced and approved by the Network Functions Virtualisation (NFV) ETSI Industry Specification Group (ISG) and represents the views of those members who p
2、articipated in this ISG. It does not necessarily represent the views of the entire ETSI membership. GROUP SPECIFICATION ETSI ETSI GS NFV 003 V1.2.1 (2014-12) 2Reference RGS/NFV-003 Keywords NFV, terminology ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 F
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9、are Trade Marks registered and owned by the GSM Association. ETSI ETSI GS NFV 003 V1.2.1 (2014-12) 3Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Terms and definitions . 6g30-
10、9 6g3A to B 6g3C 6g3D to H 6g3I 6g3J to K 6g3L 6g3M 6g3N 7g3O 8g3P 8g3Q 8g3R 8g3S 8g3T 9g3U 9g3V 9g3W to Z 10g34 Abbreviations . 11g30-9 11g3A to B 11g3C 11g3D to M 11g3N 11g3O 11g3P 11g3Q to R 11g3S 11g3T to U 12g3V 12g3W to Z 12g3History 13g3ETSI ETSI GS NFV 003 V1.2.1 (2014-12) 4Intellectual Prop
11、erty Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); E
12、ssential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried
13、 out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Group Specification (GS) has been produced by ETSI Industry Specif
14、ication Group (ISG) Network Functions Virtualisation (NFV). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting
15、 Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI GS NFV 003 V1.2.1 (2014-12) 51 Scope The present document provides terms and definitions for conceptual entities within the scope of the I
16、SG NFV, in order to achieve a “common language“ across all the ISG NFV working groups. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version app
17、lies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in th
18、is clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 ETSI Directives: Annex 1: “Definitions in relation to the member categories of ETSI“. 2 ETSI TR 121 905: “D
19、igital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Vocabulary for 3GPP Specifications (3GPP TR 21.905)“. 3 IETF RFC 2330: “Framework for IP Performance Metrics“. 4 IETF RFC 6390: “Guidelines for Considering New Performance Metric Development
20、“. 5 ISO/IEC 15939:2007: “Systems and software engineering - Measurement process“. 6 NIST Special Publication 500-307: “Cloud Computing Service Metrics Description“. NOTE: Available at http:/www.nist.gov/itl/cloud/upload/RATAX-CloudServiceMetricsDescription-DRAFT-20141111.pdf. 2.2 Informative refere
21、nces References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOT
22、E: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. N
23、ot applicable. ETSI ETSI GS NFV 003 V1.2.1 (2014-12) 63 Terms and definitions 0-9 Void. A to B Void. C Central Processing Unit (CPU): device in the compute node that provides the primary container interface compute domain: domain within the NFVI that includes servers and storage compute node: abstra
24、ct definition of a server D to H Void. I infrastructure network domain: domain within the NFVI that includes all networking that interconnects compute/storage infrastructure NOTE: It pre-exists the realization of VNFs. J to K Void. L lifecycle management: set of functions required to manage the inst
25、antiation, maintenance and termination of a VNF or NS M measurement: set of operations having the object of determining a Measured Value or Measurement Result. The actual instance or execution of operations leading to a Measured Value. (Based on the definition of Measurement in 5, as cited in 6). me
26、tric: standard definition of a quantity, produced in an assessment of performance and/or reliability of the network, which has an intended utility and is carefully specified to convey the exact meaning of a measured value NOTE: This definition is consistent with that of Performance Metric in 3 and 4
27、. Examples - packet transfer performance or reliability of a network. ETSI ETSI GS NFV 003 V1.2.1 (2014-12) 7N network controller: functional block that centralizes some or all of the control and management functionality of a network domain and may provide an abstract view of its domain to other fun
28、ctional blocks via well-defined interfaces network forwarding path: ordered list of connection points forming a chain of NFs, along with policies associated to the list Network Function (NF): functional block within a network infrastructure that has well-defined external interfaces and well-defined
29、functional behaviour NOTE: In practical terms, a Network Function is today often a network node or physical appliance. Network Functions Virtualisation (NFV): principle of separating network functions from the hardware they run on by using virtual hardware abstraction Network Functions Virtualisatio
30、n Infrastructure (NFVI): totality of all hardware and software components that build up the environment in which VNFs are deployed NOTE: The NFV-Infrastructure can span across several locations, e.g. places where data centres are operated. The network providing connectivity between these locations i
31、s regarded to be part of the NFV- Infrastructure. NFV-Infrastructure and VNF are the top-level conceptual entities in the scope of Network Function Virtualization. All other components are sub-entities of these two main entities. Network Functions Virtualisation Infrastructure (NFVI) components: NFV
32、I hardware resources that are not field replaceable, but are distinguishable as COTS components at manufacturing time Network Functions Virtualisation Infrastructure Node (NFVI-Node): physical devices deployed and managed as a single entity, providing the NFVI Functions required to support the execu
33、tion environment for VNFs Network Function Virtualisation Infrastructure Point of Presence (NFVI-PoP): N-PoP where a Network Function is or could be deployed as Virtual Network Function (VNF) Network Functions Virtualisation Management and Orchestration (NFV-MANO): functions collectively provided by
34、 NFVO, VNFM, and VIM Network Functions Virtualisation Management and Orchestration Architectural Framework (NFV-MANO Architectural Framework): collection of all functional blocks (including those in NFV-MANO category as well as others that interwork with NFV-MANO), data repositories used by these fu
35、nctional blocks, and reference points and interfaces through which these functional blocks exchange information for the purpose of managing and orchestrating NFV Network Functions Virtualisation Orchestrator (NFVO): functional block that manages the Network Service (NS) lifecycle and coordinates the
36、 management of NS lifecycle, VNF lifecycle (supported by the VNFM) and NFVI resources (supported by the VIM) to ensure an optimized allocation of the necessary resources and connectivity Network Interface Controller (NIC): device in a compute node that provides a physical interface with the infrastr
37、ucture network network operator: defined as an operator of an electronics communications network or part thereof. An association or organization of such network operators also falls within this category (as defined in 1) Network Point of Presence (N-PoP): location where a Network Function is impleme
38、nted as either a Physical Network Function (PNF) or a Virtual Network Function (VNF) network service: composition of Network Functions and defined by its functional and behavioural specification NOTE: The Network Service contributes to the behaviour of the higher layer service, which is characterize
39、d by at least performance, dependability, and security specifications. The end-to-end network service behaviour is the result of the combination of the individual network function behaviours as well as the behaviours of the network infrastructure composition mechanism. ETSI ETSI GS NFV 003 V1.2.1 (2
40、014-12) 8network service descriptor: template that describes the deployment of a Network Service including service topology (constituent VNFs and the relationships between them, Virtual Links, VNF Forwarding Graphs) as well as Network Service characteristics such as SLAs and any other artefacts nece
41、ssary for the Network Service on-boarding and lifecycle management of its instances network service orchestration: subset of NFV Orchestrator functions that are responsible for Network Service lifecycle management network service provider: type of Service Provider implementing the Network Service ne
42、twork stability: ability of the NFV framework to maintain steadfastness while providing its function and resume its designated behaviour as soon as possible under difficult conditions, which can be excessive load or other anomalies not exceeding the design limits NF forwarding graph: graph of logica
43、l links connecting NF nodes for the purpose of describing traffic flow between these network functions NF set: collection of NFs with unspecified connectivity between them NFVI component: NFVI hardware resource that is not field replaceable, but is distinguishable as a COTS component at manufacturin
44、g time NFV framework: totality of all entities, reference points, information models and other constructs defined by the specifications published by the ETSI ISG NFV NFV Infrastructure (NFVI): totality of all hardware and software components which build up the environment in which VNFs are deployed
45、NOTE: The NFV-Infrastructure can span across several locations, i.e. multiple N-PoPs. The network providing connectivity between these locations is regarded to be part of the NFV-Infrastructure. NFV-Resource (NFV-Res): NFV-Resources do exist inside the NFV-Infra and can be used by the VNF/VNSF to al
46、low for their proper execution O Void. P Physical Network Function (PNF): implementation of a NF via a tightly coupled software and hardware system Q Void. R resiliency: ability of the NFV framework to limit disruption and return to normal or at a minimum acceptable service delivery level in the fac
47、e of a fault, failure, or an event that disrupts the normal operation S scaling: ability to dynamically extend/reduce resources granted to the Virtual Network Function (VNF) as needed NOTE: This includes scaling up/down and scaling out/in. scaling out/in: ability to scale by add/remove resource inst
48、ances (e.g. VM) ETSI ETSI GS NFV 003 V1.2.1 (2014-12) 9scaling up/down: ability to scale by changing allocated resource, e.g. increase/decrease memory, CPU capacity or storage size service: component of the portfolio of choices offered by service providers to a user, a functionality offered to a use
49、r, as defined in ETSI TR 121 905 2 NOTE: A user may be an end-customer, a network or some intermediate entity. service continuity: continuous delivery of service in conformance with services functional and behavioural specification and SLA requirements, both in the control and data planes, for any initiated transaction or session till its full completion even in the events of intervening exceptions or anomalies, whether scheduled or unscheduled, malicious, intentional or unintentional NOTE 1: From an end-user perspect
