OLD GENERATION TO NEXT GENERATION TO SOFTWARE … · CDC ROADM L0 DWDM O-SDN DC SDN SDN (2005) 6...
Transcript of OLD GENERATION TO NEXT GENERATION TO SOFTWARE … · CDC ROADM L0 DWDM O-SDN DC SDN SDN (2005) 6...
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