Future Network Architecture

  • August 2013
  • -
  • Idate

Future network architecture
Can SDN and NFV satisfy telcos’ needs?

This report includes:
- a complete report
- a slideshow

Table Of Contents

Table of Contents

1. Executive Summary 7
1.1. Network operators’ systems reaching their limits 8
1.2. Industry efforts to develop an entirely new architecture 8
1.3. Impact on the ecosystem 9

2. Methodology 11

3. Background 13
3.1. Properties of existing networks 13
3.2. Challenges for operators 15
3.2.1. Challenges of building a network adapted to current needs 15
3.2.2. Controlling costs 16

4. Key technologies for future network architectures 17
4.1. Cloud computing for flexible and agile networks 17
4.1.1. Background 17
4.1.2. Role in future architectures 18
4.2. DPI for intelligent networks 18
4.2.1. Concept 18
4.2.2. Appeal for operators 19
4.2.3. What role in future network architectures? 19
4.3. APIs for accessible networks 20
4.3.1. Definition 20
4.3.2. The API’s role in future architectures 20
4.4. SDN for programmable networks 21
4.4.1. Background and definition 21
4.4.2. How SDN works 22
4.4.3. The promise of SDN: why is it a key building block for telcos? 23

5. Initiatives and ecosystem standards 24
5.1. OpenFlow, the Open Networking Foundation standard 24
5.1.1. Description and objectives of OpenFlow 24
5.1.2. How it works 25
5.1.3. A number of points being debated 26
5.1.4. Roadmap for ONF 27
5.2. NFV: network functions virtualisation 28
5.2.1. Description and goals of NFV 28
5.2.2. How it works 28
5.2.3. Benefits of virtualisation similar to those offered by SDN 29
5.2.4. Link between NFV and SDN 29
5.2.5. Link between NFV and DPI 29
5.2.6. Current status 30
5.2.7. Challenges to implementing NFV 30
5.3. ICN: information-centric networking 31
5.3.1. Description and goals 31
5.3.2. Features of ICN 32
5.3.3. Current status 32

6. How equipment suppliers are positioned 33
6.1. Why are equipment manufacturers entering this market? 33
6.2. Assessment of the addressable market for SDN and network virtualisation 35
6.3. Company profiles 37
6.3.1. Alcatel-Lucent 37
6.3.2. Cisco 39
6.3.3. Ciena 41
6.3.4. Ericsson 42
6.3.5. HP 44
6.3.6. Huawei 44
6.3.7. Juniper 46
6.3.8. NEC 47
6.3.9. Nokia Siemens Networks 49
6.3.10. SDN start-ups 50

7. Opportunities for the ecosystem 53
7.1. Scenario for switching to a new architecture 53
7.2. Telcos’ approach 56
7.2.1. ATandT 56
7.2.2. BT 56
7.2.3. Deutsche Telekom 57
7.2.4. Orange 58
7.2.5. KPN 58
7.2.6. NTT 58
7.2.7. Telecom Italia 59
7.2.8. Telefónica 60
7.2.9. Telstra 60
7.2.10. Verizon 61

8. Fashionable technologies or real solutions to telcos’ needs? 62
8.1. What will future networking architectures look like? 63
8.2. When will future networking architectures be deployed? 63
8.3. Who will deploy future networking architectures? 64



Figures

Figure 1: Benefits of SDN 8
Figure 2: OpenDayLight architecture 9
Figure 3: The different options for future networking architectures 10
Figure 4: Growth of global IP traffic, by type of application, 2011-2016 13
Figure 5: Growth of smartphone sales worldwide, 2009-2015 14
Figure 6: Growth of operator spending on fixed and mobile infrastructure, 2007-2012 16
Figure 7: Traffic steering with DPI 19
Figure 8: API in the SDN 20
Figure 9: Decoupling the control plane and the data plane 21
Figure 10: Simplified view of an SDN architecture 22
Figure 11: Benefits of SDN 23
Figure 12: OpenFlow as an SDN 25
Figure 13: How OpenFlow switching works 25
Figure 14: Sample flow table instructions 26
Figure 15: OpenDayLight architecture 27
Figure 16: How NFV works 28
Figure 17: Reduced TCO 29
Figure 18: DPI in NFV 30
Figure 19: How ICN works 31
Figure 20: Different options for future network architectures 34
Figure 21: SDN and network virtualisation market 36
Figure 22: Alcatel-Lucent’s virtualised services platform 38
Figure 23: CloudBand architecture 38
Figure 24: Cisco’s approach 39
Figure 25: Cisco’s approach: multi-layer programmability 40
Figure 26: Cisco’s ONE platform 41
Figure 27: The OPn platform infrastructure 41
Figure 28: Ericsson’s approach 43
Figure 29: HP’s SDN architecture 44
Figure 30: The networks’ evolution 44
Figure 31: Huawei’s approach: end-to-end SDN 45
Figure 32: Juniper’s approach 47
Figure 33: NEC’s approach 48
Figure 34: SDN and NFV phases 48
Figure 35: NEC’s SDN architecture 49
Figure 36: Open Core Software architecture 50
Figure 37: Functions virtualisation with Open Core Software 50
Figure 38: The Big Switch Networks platform 51
Figure 39: Brocade’s approach to WAN virtualisation 51
Figure 40: Nicira’s approach to virtual network infrastructure 52
Figure 41: 3GPP architecture 53
Figure 42: Average age of mobile networks by technology generation 53
Figure 43: Network components affected by SDN and NFV 55
Figure 44: BT’s view of the uses of SDN 56
Figure 45: OpenFlow in the mobile access network 57
Figure 46: Telefónica’s approach to SDN 60
Figure 47: Sample application: traffic steering based on OpenFlow 61
Figure 48: Google’s software-defined WAN 62



Tables

Table 1: ONF goals for 2013 27
Table 2: How SDN solutions providers are positioned 34
Table 3: Huawei’s SDN roadmap 46
Table 4: Operators’ top priorities for future network architectures 55
Table 5: Benefits of network automation 59
Table 6: A selection of equipment manufacturers’ SDN and network virtualisation solution announcements 63

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