OLD GENERATION TO NEXT GENERATION TO SOFTWARE GENERATION NETWORKS:How Softwarization is Changing the Telco Landscape

Topical Session 7: SD-WAN & Network Virtualization

22nd January 2018, Hawaii

Anuradha Udunuwara | @AnuradhaU | @SriLankaTelecom

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RELATIVE POPULARITY OF TERMS

• SDN ~ 120 M

• NFV ~ 4.8 M

• Softwarization ~53,000

Source: Google search engine on 2nd January 2018, Sri Lanka time

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BUSINESS PROBLEM WE ARE SUPPOSED TO SOLVE

Time

Traffic volume

# customers

Revenue

cost

Voice dominates

Data dominates

Decoupling of network traffic

&operator revenue

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Legacy /

TDMIP / Ethernet Softwarization

OGN NGN SGN

(vNGN)

CSP DSP

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CENTRAL OFFICE VIRTUALIZATION

Softwarization(SDN, NFV, Cloud)

CloudCO

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Packet Layer

Packet aware transport

OTN Switching

L2.5

L1

L2

MPLS-TP

OTN

Ethernet

DC

L3 IP

T-SDN

Carrier SDN

Optical Layer

Metro Access

Sub-sea

Long-haul

Metro Core

CDC ROADM L0 DWDM

O-SDN

DC SDN

SDN (2005)

6

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Automation

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IETF SDNRG IETF NFVRG

8

+ O-ECOMP =>

+ =>

Openstack Tacker

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Are vendors willing to be truly open ?

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Orchestration often becomes the elephant in the room

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Guest OS

Hypervisor

Guest OS

Host HW

Host OS

Virtualized

APs

VMs

PMHost HW

Host OS

Bare metal

APs

PM

Bins/Libs Bins/Libs

Host HW

Host OS

Containerized

APs

Containers

PM

Bins/LibsHypervisor

Guest OS

Host HW

Host OS

Containers and VMs

APs

Containers & VMs

PM

Bins/Lib

s

Hypervisor

Guest OS

Host HW

Host OS

Containers in VMs

APs

Containers

PM

Bins/Lib

s

Bins/Lib

s

Guest OS

Bins/Lib

s

VMs

Host HW

Host OS

VMs in Containers

APs

VMs

PM

Guest OS

Hypervisor

Containers

Guest OS

Hypervisor

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GOING BEYOND DOCUMENTATION

• ECOMP (Enhanced Control, Orchestration, Management & Policy) Architecture White Paper, AT&T Inc. -2016 (31 pages)

• SDN-NFV Reference Architecture Version 1.0, Verizon Network Infrastructure Planning - February 2016 (220 pages)

• ATSCALE White Paper – Vision on Future Telco Infrastructure, SK Telecom – July 2016 (82 pages)

• UNICA architecture strategy for network virtualisation, Telefónica –July 2017 (28 pages)

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TECHNICAL VS. NON-TECHNICAL CHALLENGES

1. Lack of clear, aligned vision and goals

2. Cultural and organizational issues

3. Lack of top management support

4. Complexity (Product, portfolio, processes, etc.)

5. Availability of budget/resources

---

10. Lack of industry roadmap

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SKILLS ARE AN ISSUE

Source: http://www.vistage.com/blog/beyond-business/skills-gap-or-generation-gap/

• 80% of CSPs cited lack of skills as a barrier to digital transformation

• 70% think retaining employees will be a challenge

Source: TM Forum 2017

DIY or ?

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WHO’S GOING TO DO THE INTEGRATION?

Data Plane

Control Plane

$ x

$ y

Data Plane

Control Plane

$ a

$ b

x + y a + b= , > , <

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THERE’S ALWAYS A NEXT BIG THING IN NETWORKING

• 5 years ago – Ethernet fabrics in DC

• SDN• architecture for networks

• SD-WAN

• IBN (Intent-Based Networking)• piece of networking software that helps to plan, design and

implement/operate networks that can improve network availability and agility

• IBN SW can “drive” a network that is either SDN-based or non-SDN based

• Mainstream 2020?

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SUMMARY

• Tools – mostly available

• Culture – hard to change, but need to

• Cost – not simple as we think