All about SDN/NFV developments within the Telecommunications sector. BSS/OSS evolutions and a drive towards intelligent IT systems.

1. NFV/SDN:
Managing and implementing Network Function
Virtualization with intelligent OSS
By Michiel Nuytemans
OSS Consultant, Comarch
Comarch Telco Brunch, Brussels, Friday October 23rd

2. Copyright Comarch 2015
NFV SDN evolution 1/3: No virtualization in the network
Data Center
EPC
PDN
eNodeB
eNodeB
RAN
eNodeB
App App
SGW PGW
App
VIP

3. Copyright Comarch 2015
NFV SDN evolution 2/3: Virtualization in the network - NFV
Data Center
EPC
PDN
eNodeB
eNodeB
RAN
eNodeB
AppvPGWvSGW
BBUBBU
vBBU
App AppPGWSGW SGW PGW
eNodeB
VIP

4. Copyright Comarch 2015
NFV SDN evolution 3/3: Network nodes as micro-data centers

5. Copyright Comarch 2015
NFV - BSS/OSS
OSS – traditional role
Real-time OSS -
part of NVFIOSS for
SDN
ETSI Ref Arch - Comarch OSS

6. Copyright Comarch 2015
SDN – BSS/OSS
SDN architecture – vision

7. Gi-LAN vs. Mobile Edge
Computing based services

8. Copyright Comarch 2015
Gi-LAN Services

9. Copyright Comarch 2015
Mobile Edge Computing

10. Copyright Comarch 2015
Gi-LAN vs. MEC
EPC
Gi-LAN
eNodeB
RAN
eNodeB
vPGWvSGW
SGWBBUBBU
vBBU
PGW PGWSGWDPI SGW PGW
Video
Optimizer
DPI DNS
DPI DPI
App...
Video
Optimizer
Video
Optimizer
DNS DNS
eNodeB
eNodeB
Not virtulized RAN
eNodeB
eNodeB
Not virtulized RAN
Backhaul aggregation
SGW PGW DPI Video
Optimizer DNS
VIP
VIP
Video
Optimizer DNS App App
VIP

11. Copyright Comarch 2015
Network as distributed Cloud: Gi-LAN vs. MEC
Benefits
• Services are deployed „in the network” not on MEC or in Gi-LAN
• Dynamic, policy-driven decision to allocate resources either at:
• Edge, close-edge, core, (Gi-LAN)
• Dynamic MEC Service capabilities creation – no „hardcoding”
• MEC capabilities creation is to be perceived as NFV functions instantiation at the edge
• Ability to de-allocate MEC from overloaded „edge”
• Offloading „edge” for applications less sensitive for „network latency”
• „Edge” can be dynamically re-allocated to „aggregation” (close edge)
• These dynamic decision are taken based on „virtualized” real-time OSS
Better customer experience at lower costs

12. VPN-based services for
enterprise customers.
Service chaining, orchestration

13. Copyright Comarch 2015
VPN example – traditional implementation

14. Copyright Comarch 2015
How to implement services?
NFV-centric approach: Firewall example
• Firewall as VNF hosted by NFVI
• SDN forwards packets to/from Internet via port with an accessible vFirewall
• The ‚main’ functionality is implemented in vFirewall
SDN approach: CPE Router example
• vCPE implementation split into:
 Control plane: vCPE_CP SDN controller applications
• Manages Flow entries of OFP Switches leveraging Network Topology from OSS Network
Inventory
 Data Plane – flow entries at OFP Switch at customer premises – move closer to the customer
• Simple packet forwarding based on packet header
• Controlled by vCPE_CP
• The ‚main’ functionality is implemented by controller applications affecting the traffic flow

15. Copyright Comarch 2015
VPN – based on SDN and NFV

16. Copyright Comarch 2015
VPN – access to business applications and Internet

17. Copyright Comarch 2015
VPN – implementation details
CPE:
Control Plane – SDN
controller applications
Firewall as VNF on NFVI
CPE:
Data Plane – Flow
entries in OFP Switch

18. Copyright Comarch 2015
VPN – catalog-driven fulfillment
class Domain Objects
«CFS»
VPN
«CFS»
SiteManagedLAN
- IPSubnetwork :int
«CFS»
SiteAccess
- bandwidth
«CFS»
BusinessApplications
- IPAddress
- MAC
«CFS»
Host
- MAC
- IPAddress
«CFS»
InternetAccess «CFS»
Firewall
RFS Firewall
«R»
vFirewall
«R»
VM
«RFS»
SiteAccessFlow
«R»
CPE_OFPSwitch
«R»
PE_OFPSwitch «R»
OFPSwitchFlowEntries
«R»
OFPSwitch_FlowEntries
«RFS»
InternetAccessFlow
«R»
InternetGateway

19. Copyright Comarch 2015
VPN – access to business applications and Internet
1. Enterprise Customer, issue
and order for an extra
Business Application at Site2

20. Copyright Comarch 2015
VPN – Fulfillment example
2. The customer order updates
data in Network and Service
Inventory

21. Copyright Comarch 2015
VPN – Fulfillment example
3. Network is
„reprogrammed”
based on data ->
Data flows are
updateda
3
3
3
3 3

22. Copyright Comarch 2015
VPN – Service Assurance example

23. Copyright Comarch 2015
VPN – Service Assurance example

24. SDN / NFV
QUIZ

25. Copyright Comarch 2015
1. What is a driver for Mobile Edge Computing?
a) There is a need for low-latency, high-bandwidth applications
b) It is cheaper to deploy applications in the edge then in a
datacenter
c) There is a need for decentralizing the computing to provide
high-availability applications

26. Copyright Comarch 2015
2. What is Openflow?
a) An algorithm to perform network routing optimization
b) A platform architecture designed to manage an SDN network
c) A standardized protocol used to configure SDN routers

27. Copyright Comarch 2015
3. What is the role of OSS systems in SDN / NFV environment
a) An SDN / NFV environment does not need OSS functions
b) OSS systems need to support legacy infrastructure and network
c) OSS systems can be used to manage both the physical and
virtual network resources

28. Thank You
michiel.nuytemans@comarch.com