ETSI GS NFV-EVE 005 V1.1.1 (2015-12)

Network Functions Virtualisation (NFV); Ecosystem; Report on SDN Usage in NFV Architectural Framework

DGS/NFV-EVE005

General Information

• Status: Published
• Publication Date: 17-Dec-2015
• Technical Committee: NFV EVE - Evolution and Ecosystem
• Current Stage: 12 - Completion
• Due Date: 28-Dec-2015
• Completion Date: 18-Dec-2015

Standards Content (Sample)

ETSI GS NFV-EVE 005 V1.1.1 (2015-12)






GROUP SPECIFICATION
Network Functions Virtualisation (NFV);
Ecosystem;
Report on SDN Usage in NFV Architectural Framework
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 participated in this ISG.
It does not necessarily represent the views of the entire ETSI membership.

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2 ETSI GS NFV-EVE 005 V1.1.1 (2015-12)



Reference
DGS/NFV-EVE005
Keywords
NFV, SDN

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3 ETSI GS NFV-EVE 005 V1.1.1 (2015-12)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Overview of SDN in the NFV architectural framework. 10
4.1 Introduction . 10
4.2 SDN scope . 10
4.3 SDN in the NFV architectural framework . 11
4.3.1 General . 11
4.3.2 SDN management plane . 11
4.3.3 Position of SDN resources in an NFV architectural framework . 12
4.3.4 Position of the SDN controller in an NFV architectural framework . 12
4.3.5 Position of SDN applications in an NFV architectural framework . 13
4.4 SDN controller interfaces in the NFV architectural framework . 14
4.4.1 Introduction. 14
4.4.2 SDN resource control interface options . 16
4.4.3 SDN controller orchestration interface options. 17
4.4.4 SDN application control interface options . 18
4.5 SDN controller to controller interface in NFV . 20
4.5.1 SDN controller to controller interface options in NFV . 20
4.5.2 SDN controller federation options in NFV . 21
5 Design patterns of SDN in the NFV architectural framework . 21
5.1 Introduction . 21
5.2 SDN technology integration options with NFV . 22
5.2.0 Introduction. 22
5.2.1 Interconnecting VNFCs using SDN . 22
5.2.2 Interconnecting VNFs using SDN . 22
5.2.2.0 Introduction . 22
5.2.2.1 Chaining based on network service designed according to a VNF-FG . 22
5.2.2.2 Chaining based on customer policy/service . 22
5.2.2.3 Chaining based on VNF processing . 23
5.2.2.4 Load balancing across VNF's . 23
5.3 SDN across multiple VIM . 23
5.3.0 Introduction. 23
5.3.1 SDN controller interfaces . 23
5.3.2 Scenarios for SDN across multiple VIMs . 24
5.3.3 Challenges for SDN across multiple VIMs . 24
5.3.4 Analysis of SDN across multiple VIMs . 24
5.3.4.1 SDN across multiple VIMs located in a single NFVI-PoP . 24
5.3.4.2 SDN across multiple VIM in different NFVI-PoPs . 24
5.3.4.2.0 Introduction . 24
5.3.4.2.1 VNFs across multiple NFVI-PoP locations with a static bit pipe between them . 25
5.3.4.2.2 VNFs across multiple NFVI-PoP locations, SDN-based NaaS between them . 25
5.3.4.2.3 VNFs across multiple NFVI-PoP locations - NFVI-PoP and WAN in a common trust domain
(Option A) . 26
5.3.4.2.4 VNFs across multiple NFVI-PoP locations - NFVI-PoP and WAN in different trust domains -
client access to virtual WAN resources (Option B) . 26
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5.3.4.2.5 VNFs across multiple NFVI-PoP locations - NFVI-PoP and WAN in different trust domains -
client access to physical host resources (Option C) . 27
5.3.4.2.6 SDN based NFV IaaS across multiple administration domains . 28
5.3.4.2.7 Multiple VIM for a mobile network . 30
5.4 SDN controller hierarchy . 30
5.4.1 Introduction. 30
5.4.2 Technical and business scenario . 31
5.4.2.1 SDN controller hierarchy scenarios overview . 31
5.4.2.2 SDN controller hierarchy for distributed performance, scalability and reliability for multilayer
and single-layer transport network . 31
5.4.2.3 SDN controller hierarchy for distributed, cross-SP or cross-domain services . 32
5.4.2.4 SDN controller hierarchy for NaaS . 33
5.4.2.5 SDN controller hierarchy for multi-domain, transport network fast fault recover . 33
5.4.3 Mapping of SDN controller to the ETSI NFV architecture . 34
5.4.3.1 Introduction . 34
5.4.3.2 Hierarchy of SDN controllers in the NFVI . 34
5.4.3.3 Hierarchy of SDN controllers in a VNF . 35
5.4.3.4 Hierarchy of SDN controller across functional blocks . 35
5.4.3.5 Hierarchy of SDN controllers below the WIM . 35
5.5 SDN controller in a Virtualised environment . 35
5.5.1 Introduction. 35
5.5.2 Virtualisation of SDN Controller . 35
5.5.3 SDN controller across multiple Virtualised environment . 36
5.6 SDN and VNF forwarding graph . 37
5.6.1 General . 37
5.6.2 Static NCT . 37
5.6.3 Dynamic NCT . 37
5.7 SDN controllers in the tenant and the infrastructure domains . 38
5.8 Service Function Chaining . 40
5.8.1 Introduction. 40
5.8.2 Service Function Chaining (SFC) . 40
5.8.3 SFC and SDN . 41
5.8.4 SFC, SDN and NFV with a single NFVI domain . 42
5.8.4.0 Introduction . 42
5.8.4.1 Service function chain in the NFVI . 43
5.8.4.2 Service function chain in the tenant domain . 45
5.8.4.3 Different options to control a dynamic service chain . 46
5.8.5 End to end carrier network with SFC, SDN and NFV . 47
5.8.6 SFC, SDN, NFV with multi-domain, scalability, etc. . 48
6 Functional recommendations . 49
6.1 Introduction . 49
6.2 Functional recommendations related to security . 52
6.3 Functional recommendations related to SDN controller . 52
6.4 Functional recommendations on connectivity and interfaces . 53
6.5 Functional recommendations on NFV Management and Orchestration . 54
6.5.1 General . 54
6.5.2 Inter-administrative domain connectivity coordination . 54
6.5.3 Support of operations to an SDN controller below the VIM . 55
6.5.4 Support of ordering and charging operations between multiple administrative domains . 55
6.6 Recommendations on operational aspects . 55
Annex A (informative): SDN in ETSI NFV POC . 57
A.0 Introduction . 57
A.1 POC#1: Open NFV Framework Project . 57
A.2 POC#2: Service Chaining for NW function selection in Carrier Networks . 60
A.3 POC#8: Automated Network Orchestration . 62
A.4 POC#13: Multi-Layered Traffic Steering for Gi-Lan . 64
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A.5 POC#14: Forces applicability for NFV and integrated SDN . 66
A.6 POC#15: Subscriber Aware Sgi/Gi-lan Virtualisation . 68
A.7 POC#16: NFVIaaS with Secure SDN-controlled WAN Gateway . 70
A.8 POC#21: network intensive and compute intensive hardware acceleration . 72
A.9 POC#23: E2E orchestration of Virtualised LTE Core-Network functions . 74
A.10 POC#26: Virtual EPC with SDN functions in Mobile Backhaul Networks . 76
A.11 POC#27: VoLTE Service based on vEPC and vIMS architecture . 78
A.12 POC#28: SDN Controlled VNF Forwarding graph . 80
A.13 POC#34: SDN-enabled Virtual EPC Gateway . 84
A.14 POC#38: Full ISO-7 layer stack fulfilment, activation and orchestration of VNFs in carrier
networks . 85
Annex B (informative): SDN Use Cases in NFV environment . 91
B.1 Introduction . 91
B.2 Multi-Layer Bandwidth on Demand . 91
B.2.1 Introduction . 91
B.2.2 Problem Description . 91
B.2.3 Solution Description . 92
B.3 Bandwidth Defragmentation . 92
B.3.1 Problem Description . 92
B.3.2 Solution Description . 93
B.4 Policy Based Configuration . 93
B.4.1 Problem Description . 93
B.4.2 Solution Description . 93
B.4.3 Scope of Policy Based Configuration . 95
B.4.4 Questions raised by Policy Based Configuration . 95
B.5 Virtual CPE . 95
B.5.1 Problem Description . 95
B.5.2 Solution Description . 96
Annex C (informative): Comparison of Opensource SDN Controller . 99
C.1 Introduction . 99
C.2 List of Opensource SDN controller . 99
C.2.0 Introduction . 99
C.2.1 Floodlight . 100
C.2.2 OpenDaylight . 100
C.2.3 OpenContrail . 104
C.2.4 Ryu . 106
C.2.5 ONOS . 108
C.2.5.1 Introduction. 108
C.2.5.2 ONOS Architecture. 109
C.2.5.3 ONOS User Interface . 110
C.2.6 MidoNet . 111
C.3 Comparison criteria . 113
C.3.1 List of Comparison Criteria . 113
C.3.2 Impact of Docker . 114
C.4 Comparison table . 115
C.5 ETSI NFV POC with Opensource SDN Controller . 115
C.5.1 List of POC and Opensource Controller used . 115
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C.6 Lessons learnt . 116
C.7 Other Opensource SDN components. 117
C.7.1 Switch Software and Stand-Alone OpenFlow Stacks. 117
C.7.2 Controller Platforms . 117
C.7.3 Special Purpose Controllers . 117
C.7.4 Misc . 118
Annex D (informative): Authors & contributors . 119
Annex E (informative): Change History . 121
History . 125


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7 ETSI GS NFV-EVE 005 V1.1.1 (2015-12)
Intellectual Property 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); Essential, 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 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 Specification Group (ISG) Network Functions
Virtualisation (NFV).
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting 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

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8 ETSI GS NFV-EVE 005 V1.1.1 (2015-12)
1 Scope
The present document identifies the most common design patterns for using SDN in an NFV architectural framework. It
also identifies potential recommendations to be fulfilled by the entities that perform the integration.
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 applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly availabl
...