ADTRAN Company Confidential® Adtran, Inc. 2013 All rights reserved
Chris KoenemanVice President, Bluesocket Business Group
ADTRAN Company Confidential® Adtran, Inc. 2013 All rights reserved 2
Who is ADTRAN?
Leading provider of innovative networking and communications equipment – ADTRAN solutions enable converged
voice, data, video, and Internet services
– Broad customer base with solutions widely deployed by carriers and businesses of all sizes, worldwide ADTRAN Headquarters, Huntsville, AL
Smart, reliable solutions for today’s communications networks– 25 years of experience building innovative solutions supporting next generation
technologies– Continued market leadership in key technologies from integrated access, DSL, and
VoIP to routing
Dependable solutions for business and residential connectivity– Entrepreneurial engineering capabilities– Demonstrated financial competence
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ADTRAN – Carrier Networks Divsion
Exchange
Provider’s Access Infrastructure
• Improve service provider access infrastructure
• Increase services for business & residential customers
• Broadband Access• Ethernet Aggregation• Optical Access• Business Ethernet Services
• Business Service Migration• IPTV• VoIP• Mobile Backhaul
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ADTRAN – Enterprise Networks Division
Business Customers
•Value-based communication solutions for Small & Medium Enterprises
•ADTRAN solutions enable:•Branch Office Connectivity• Internet Access•Converged Access•LAN Switching•Wireless Access• IP Telephony/VoIP•Unified Communications
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Bluesocket was a VC-backed company based in Boston high tech corridor
Bluesocket acquired by ADTRAN in August 2011
Acquired for innovative application of network virtualization to solve scale challenges in Wi-Fi networks
Bluesocket remains as a business group in ADTRAN
Bluesocket R&D remains in Burlington, MA, and has more than doubled since the acquisition
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Network Compute
An Application Needs Both
Dreams of virtualization
Highly virtualized
Want to expose the difference? Ask about Disaster Recovery
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Virtualization Starts Here
Physical DeviceService
Service is de-coupled from the asset on which it operatesService is not described on, associated with, or limited by any physical asset
Once Service is isolated, it can be defined in independent software: SDN
Separation
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But can the network be virtualized?
Server Virtualization and Network Virtualization
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But the Network is Different
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Understanding Network Virtualization with a Venn Diagram
Network Virtualization
Katy Perry Golden Gate Bridge
Currently sexy
Incredible scale
Built in California
Success at least partly due to superior underlying infrastructure
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1. Independence from network hardware
2. Actually reproduce the network service model
3. Follow operational model of compute virtualization
4. Compatible with any hypervisor platform
5. Isolation between applications, physical network, and control plane
6. Cloud performance and scale
7. Programmatic network provisioning and control
Seven Principles of Network Virtualization
Products and solutions adhering to these principles are appearing on the market
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Server and Network Virtualization
Compute and Network will become
more symmetrical
Common set of software tools to both
set up both the compute side and
network side of an application
A symbiotic relationship between
Compute and Network
But can the network virtualize?
Here’s What’s Evolving
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The Seeds for Network Virtualization are 40 years old
It starts with control plane separation
Is control plane separation something new?
SS7? What’s next? A discussion of rotary phones?
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The Seeds for Network Virtualization are Present in IP Networks
• Separates functions
• End point independence and intelligence
• Tunneling options for control information
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Define and Operate The Network in Software
SDN Central’s definition of Software-defined Networking (n) is: A new approach to networking that allow network operators more control of their infrastructure, allowing customization and optimization that enables invention of and delivery of new types of network services.
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Wasn’t GMPLS going to unify the control plane?
A good idea…
…that got way too complicated
SDN has the potential to deliver on the promise of GMPLS
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What Happened to GMPLS and derivatives such as GMPLS-TE?
Koeneman Law of Networking
Any networking protocol with an acronym that exceeds four letters is doomed to irrelevance…
…unless it has a slash in it like TCP/IP…or a mixture of small case with capital letters like vWLAN
SDN is often associated with network virtualization which is also referred to as Network Functions Virtualization or NFV. It is written as “SDN and NFV”. If it becomes SDNNFV, it’s
all over. If it becomes SDN/NFV, there’s a chance.
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Does SDN imply OpenFlow?
OpenFlow is an example and not a forgone conclusion.
May suffer from least common denominator
problem while vendor specific implementations excel
REST is a good example
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Understanding SDN with a Venn Diagram
Software Defined Networks
Some say it is mythical
Data centers actually encourage it
Detected in large bodies of water
Would change the world if it really gets loose
Loch Ness Monster Global Warming
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SDN Far Fetched? Remember…
1998
2013
Someday, your network won’t be switching circuits but rather handling
packets of various lengths.
Someday, your network won’t be made up of switches and routers
but instead virtual machines controlling simple physical devices.
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The Implication is Far Reaching
Service agility– Change the software to redefine
a service
Cost effective scaling– Control plane can be scaled
independently of the data plane
Higher reliability– Control plane interruption does
not affect the data plane
Greater throughput– Data plane device optimized for
throughput
But where do you start?Spiderman….
Seriously?
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Access network– This is where services are defined and
users are classified– Take advantage of the service definition
advantage of network virtualization– But which access network?
Consider the Wi-Fi portion of the access network– Under tremendous scale pressure with the
number of Wi-Fi devices and usage patterns
– Economic scaling is the hallmark of network virtualization
Starting Point for Network Virtualization
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Wi-Fi comes to you in the form of the WLAN
Different approach than your home Wi-Fi
Common WLAN is an access controller along with Wi-Fi access points
Access points simply bridge a user from wireless to wired
Access controller behaves as a switch and performs all the heavy lifting for the data sessions and service definitions
Antithesis of the principles of network virtualization
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What is WLAN Virtualization?
Traditional WLAN
Service definition and data flow coupled at the controller
vWLAN
• Service definition and user control separate from the data flow
• Access point optimized for data forwarding• Service definition and user control in software in
a virtual machine
WLAN Controller Access Points Access PointsHypervisor
Management Plane
Control Plane
Data Plane
Physical / MAC Layer
Management Plane
Control Plane
Data Plane
Physical / MAC Layer
RESTAPIs
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VPN, VLAN…Now think vWLAN
Leverages three key assets– Physical: Data Center– Computing Infrastructure: Hypervisor– Personnel: Application Programmers
But it goes further…
Network Virtualization Applied to the WLAN
If you are thinking this is a vWLAN, you haven’t
been listening
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Centralized Cloud Control
Managed WLAN enterprise customer
Public Access HotSpot
NOC
WAN
No need for physical controllers at each site
All users controlled and all APs managed from NOC
Data sessions remain distributed at remote site
One architecture serving public access, managed services, and offload
Cellular Offload
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Back Up NOC
Virtualization Enables Policing and Traffic Shaping at the Edge
Unwanted Traffic
Groomed traffic
Data Center or Network Operations
CenterControl plane scale a
function of data center capacity
Control traffic
Unwanted traffic is turned away at the access point and never enters the network
Traffic is prioritized at the access point
LAN Switch
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Conclusion
Network virtualization will make network service definition symmetrical with application definition
Network virtualization solutions are available
An ideal target in the network is the access layer, specifically the Wi-Fi access layer
By applying network virtualization to the Wi-Fi access layer, tremendous benefits are realized in terms of economic scaling, high availability, cloud control, and security
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? ? ? ? ?
Chris KoenemanVice President, Bluesocket Business Group of [email protected]+1 781 996 9689
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