What is Network Function Virtualisation (NFV)?

1. WHAT IS NETWORK FUNCTION VIRTUALISATION (NFV)?

2. Network Function Virtualisation (NFV)

3. Virtualised Network Function (VNF)

4. Traditional Model router router router router firewall firewall firewall server server server server server server access gateway router router router router router firewall firewall DHCP DNS

5. Centralised Services router router router router firewall firewall firewall server server server server server server access gateway router router router router router firewall firewall DHCP DNS

6. Geographically distributed Point-of-Presences (PoPs) router router router router firewall firewall firewall server server server server server server access gateway router router router router router firewall firewall DHCP DNS

7. Geographically distributed dedicated hardware devices router router router router firewall firewall firewall server server server server server server access gateway router router router router router firewall firewall DHCP DNS

8. Static model router router router router firewall firewall firewall server server server server server server access gateway router router router router router firewall firewall DHCP DNS ● Each device and server has its own fixed function and capacity. ● Adding more functions or capacity requires more devices, which is very slow.

9. If something breaks or overloads... router router router router firewall firewall firewall server server server server server server access gateway router router router router router firewall firewall DHCP DNS ● Adding replacements or capacity is hard and slow. ● Devices and servers can only fill their fixed function or role. ● Changes can only be reactive and done manually.

10. Traditional ways to cope with problems ● ● ● ● ●

11. The brave new world of Network Function Virtualisation NFV

12. Instead of this … router router router router firewall firewall firewall server server server server server server access gateway router router router router router firewall firewall DHCP DNS

13. NFV offers something like this…

14. Virtualised Network Functions / devices ● Virtualised network functions run on virtual hosts on top of the virtualisation infrastructure in data centers or PoPs ● Virtual infrastructure can extend across PoPs

15. Functions/services/capacity shared across regions or customer groups

16. Extra capacity available freely ● ● ●

17. Capacity is general- purpose capacity ● ● ● Broadband Customer and Mobile Network PoPs prepare for prime time in streaming by repurposing capacity to streaming caches and regional routing and access capacity. Enterprise customer fights DDoS with additional firewall capacity Operator prepares for peak in SMS/MMS messages Content Service Provider adds more capacity and caching for prime time Prime time traffic requires more firewall capacity

18. But wait, there’s even more…

19. This is called Network Function Virtualisation Infrastructure (NFVI)…

20. Each of the small boxes can be a Virtualised Network Function (VNF) …

21. Each of the VNFs can consist of multiple components (VNFC) … Load balancer Load balancer Packet Filter Packet Filter Packet Filter Packet Filter Stateful Firewall Stateful Firewall Stateful Firewall Stateful Firewall Policy and Rule Database Policy and Rule Database VNFC VNFC VNFCVNFC ● Each Virtualised Network Function Component (VNFC) may consist of several virtual hosts, which automatically scale up and down when needed. ● VNFs and VNFCs can both provide e.g. REST or netconf interfaces for management, monitoring and integration purposes.

22. Idea is that VNFCs and VNFs can be re-used… ● … as building blocks of new VNFs and services. ● They are supposed to have web services like REST APIs => web developers are supposed to be able to build operator customer self-service portals ● Standardised interfaces should mean better vendor interoperability => avoiding vendor lock-ins

23. ETSI NFV Architecture and Interfaces

24. Os-Ma Ve-Vnfm Nf-Vi Or-Vnfm Vi-Vnfm Or-Vi According to ETSI GS NFV-SWA 001 V1.1.1 (2014-12): Network Functions Virtualisation (NFV); Virtual Network Functions Architecture

25. Os-Ma Ve-Vnfm Nf-Vi Or-Vnfm Vi-Vnfm Or-Vi

30. VNF architecture Vn-Nf SWA-5 Vn-Nf SWA-5 SWA-4 SWA-3 Ve-Vnfm-vnf SWA-1 SWA-2 According to ETSI GS NFV-SWA 001 V1.1.1 (2014-12): Network Functions Virtualisation (NFV); Virtual Network Functions Architecture

31. VNF definition by ETSI ETSI GS NFV-SWA 001 V1.1.1 (2014-12): Network Functions Virtualisation (NFV); Virtual Network Functions Architecture

32. Summary ● ● ● ● ● ● ●

33. For more information about Radiator VNF and Radiator Software

What is Network Function Virtualisation (NFV)?

What is Network Function Virtualisation (NFV)?

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What is Network Function Virtualisation (NFV)?