SlideShare a Scribd company logo
1 of 10
SDN and NFV value in Business Services.
Innovations in Network Monetization and Optimization.
A Technical Paper prepared for the Society of Cable Telecommunications Engineers
By
Mazen Khaddam
Network Architect
Cox
Atlanta
Mazen.Khaddam@cox.com
Loukas Paraschis
Technology Solution Architect
cisco,
loukas@cisco.com
Overview
The increasingly maturing SDN and NFV innovations offer an important opportunity for
service providers to better monetize their networks, by improving the time-to-market,
and SLAs guarantees for premium services, as well as the network utilization of volume-
based service delivery. This paper outlines the main benefits SDN and NFV can bring
to network service delivery, especially for business services, motivating the adoption of
SDN and NFV in the network architecture.
Most notably, SDN and NFV enhancements to the already ubiquitous cloud model can
improve time-to-market, add new functionality, and ensure customer loyalty for
applications such as dynamic capacity business VPNs, or policy-based service delivery,
at the edge of the network. They also remove many of the legacy constraints among
the access, WAN, and the data center, and enable advanced demand engineering, and
capacity optimization at the core.
To this end, an evolutionary approach to the adoption of SDN is being proposed, based
on a “hybrid” control plane architecture that combines the current distributed control-
plane routing infrastructure, with a unified “controller” platform that provides new
significant network visibility and programmability. The SDN controller capabilities are
enhanced by innovations in network protocols, APIs, and most notably new user-
defined network applications. The SDN evolution is complemented by the NFV
capabilities. NFV services provide the real-time network resource management needed
to support new applications to be deployed on-demand, and with the ability to choose
where each service may be placed. Equally important, SDN and NFV are enhanced by
cross-domain orchestration that can manage service chains across hybrid cloud and
data-center (DC) architectures to deliver seamless connectivity between compute
services in the enterprise and the cloud.
 
 
Contents
Growing the revenue of network and cloud services, especially for business customers,
is arguably among the highest priorities for network operators in general, and cable
service providers in particular. Currently, such services are very often challenged by
lengthy provisioning and complicated operations, which usually limit significantly the
operators’ ability to fully monetize their network infrastructures, and to compete with
over-the-top (OTT) providers for cloud based services. The recent, increasingly
maturing SDN and NFV innovations allow service providers to improve their network
monetization by improving the time-to-market, and SLAs guarantees for premium
services, as well as to optimize their network utilization for volume-based service
delivery. This paper outlines the main values that SDN and NFV innovations can bring
to servic
motivate
As the n
cloud se
time ser
services
the tradi
(Figure
Network
new netw
Figur
 
SDN allo
requirem
enable a
services
applicati
Of cours
brings a
of transi
cloud or
use of n
leverage
multiven
analytics
other ap
capabilit
architect
enterpris
ce provider
e the fast ad
new era of a
ervice delive
rvice deliver
s such as dy
itional netw
1). Two ne
k Function V
working era
re 1: Service
ows networ
ments. At th
applications
s can be pla
ions, thus e
se, the com
lso new ch
ent network
rchestration
etwork, com
e the SDN i
ndor, virtual
s, mobility,
pplications.
ties to man
tures, thus
se and the
networks, e
doption of S
agile servic
ery models
ry are enha
ynamic cap
work service
ew key tech
Virtualizatio
a.
es innovatio
rks to beco
he same tim
s to be depl
aced anywh
enhancing t
mmercial be
allenges in
k and servi
n solutions n
mpute, and
innovations
l and physic
collaboratio
The enhan
age “servic
delivering s
cloud.
especially i
SDN and N
e creation w
, new requi
ancing the a
pacity busin
e domains o
hnologies, S
on (NFV) [2
on based o
me much m
me, NFV an
loyed on-de
here within
the way net
nefits of eff
customer S
ces resourc
need to ens
storage re
s in data ce
cal, infrastr
on, manage
nced comm
ce chains” a
seamless c
n their bus
FV in the n
with virtuali
irements fo
already ubiq
ness VPNs,
of access, e
Software-De
], enable se
n SDN, NFV
more agile a
nd its real-ti
emand. Wi
the networ
tworks are
ficient, elas
SLA expect
ces. There
sure service
esources. T
nter, WAN,
ructure, and
ed services
mon orchest
across hybr
connectivity
iness servic
network arc
ized IT infra
or on-deman
quitous clo
or policy-b
edge and co
efined Netw
ervice prov
V, and cross
and respon
ime networ
ith SDN an
rk, accordin
designed, o
stic provisio
tations, esp
efore, advan
e automatio
This cross-
, and acces
d support re
s, video, ge
tration platf
rid cloud an
y between c
ce offerings
chitecture.
astructure h
nd connect
ud model w
based mobi
ore WAN, a
working (SD
viders to bes
s-domain o
sive to serv
rk resource
d NFV wor
ng to the ne
operated, a
oning of netw
pecially in a
ncements in
on, with rap
-domain orc
ss (Figure 1
eal-time sec
neral conte
forms also a
nd data-cen
compute se
s, which ind
has prolifera
tivity and re
with network
ility, mergin
and data ce
DN) [1], and
st evolve to
orchestratio
vice
manageme
king in con
eeds of spec
and monetiz
work servic
an environm
n conventio
pid and sec
chestration
1) to contro
curity,
ent, and ma
allow NFV
nter
ervices in th
deed
ated
eal-
k
ng
enter
d
o this
 
n.
ent
cert,
cific
zed.
ces
ment
onal
cure
can
l
any
he
This new architecture offers significant benefits for network service providers in terms of
enhanced service provisioning and extending the virtualization innovations in compute
and storage, to networking. More specifically, the two most immediate use-cases are:
 SDN innovations combined with new network provisioning functionality, most notably
those achieved through the innovations of NETCONF protocol and YANG models,
can significantly advance the automation of network provisioning, and reduce the
time-to-market for new services, allowing substantial operational simplification.
 At the same time, substantial benefits arise from the NFV ability to create “virtual”
Provider Edge (vPE) and Customer Provider Edge (vCPE) functionality which can be
customized to the specific needs of each application. NFV applications can execute
in a virtual environment, running over a mix of physical and virtual infrastructure
components, and using service chaining (or “forwarding graphs” in the NFV
terminology) to link functional blocks together to provide sophisticated service sets
tailored to specific users. This is particularly important for business services. It also
offers faster time-to-market for new services, and lowers infrastructure costs (both
CapEx and OpEx).
In this evolved service architecture, compute can take many forms, ranging from large
data centers environments, to distributed compute instantiation around the network.
When combined with the fast, automated service provisioning of SDN, NFV and cross-
domain orchestration (Figure 1), this new architecture gives rise to very interesting
monetization and optimization opportunities, allowing network service providers to
leverage the network as a key service differentiation advantage, for managed and cloud
services.
One key such use-case is the ability for optimal placement of cloud services, which is
also referred to as “demand engineering”. In this advanced network optimization
scenario, a service instance is placed, or content is located, using “global” network
awareness (e.g. topology, traffic, etc.) to determine optimal SLA, or network utilization
[3]. Demand engineering has been reported to increase the network infrastructure
utilization by around 30% in most cases [3].
Until now, slow service provisioning has demotivated most types of fast, let alone
dynamic, bandwidth provisioning. Hence, off-line planning, occasionally coupled with
some traffic engineering, has addressed sufficiently the traffic management needs of
most IP/MPLS networks. As the deployment of cloud services proliferates and is
enhanced by faster NFV and SDN provisioning, advanced network control capabilities
can optimize the trade-offs between SLA performance and network utilization, and offer
some new exciting use-cases for network monetization, as described later in Figure 4.
Even before the implementation of such advanced network control capabilities, like
traffic placement and demand engineering, SDN offers immediate substantial
operational (OpEx) benefits for network operators. In particular, for cable operators
SDN can enable improved business services workflow automation based on a unified
control and operating model, common to all network elements. Cable business services
can therefore converge with residential services, much more readily than today,
allowing for significant OpEx reduction.
In the rest of this paper, we outline the key SDN architecture and technology
innovations that advance network operations, and business service offerings, and are
important in the adoption of a robust SDN architecture.
SDN typically refers to a network architecture vision that has been championed by the
Open Networking Foundation (ONF) [1]. In this vision, data networking equipment and
software can separate and abstract the application, control and data plane. The control
plane resides centrally, decoupled from the forwarding components which remain
distributed. The central controller(s) can enhance network operations by introducing the
abilities to:
 Maintain full view of the network
 Program the network equipment
 Provide an abstraction of the network for higher-level applications.
Central to SDN evolution are the openness, network simplification, programmability, and
abstraction capabilities. This ability for programmatic interaction of the control plane
with applications and network elements is indeed the key innovation of the SDN
architecture. In the “northbound” direction, the control plane provides a common
abstracted view of the network to higher-level applications using APIs. In the
“southbound” direction, the controller programs the (physical or virtual) network
elements using new or existing network protocols, or APIs. Particularly in service
provider environments, an evolutionary architecture needs to accommodate also the
existing pre-SDN infrastructure, and hence to extend well beyond the ONF vision.
Service Providers have large operational networks and significant investment in
OSS/BSS infrastructure. For the SDN evolution to succeed, its adoption cannot
compromise existing functionality, the current carrier-class reliability, and the support for
the available standardized technologies, and multivendor systems. At the same time, it
is also important to enable network differentiated quality of experience to the end-user.
A new SDN hybrid control plane (Figure 2), combining the current distributed control
plane components residing within network elements, with centralized controllers, offers
the best SDN evolution to a network able to enhance customer experience, and allow
for service abstraction and capacity optimization.
  
Figure 2
SDN d
More sp
consistin
layer. So
when dis
from a c
distribut
offers th
default (
control t
and also
capabilit
Figure 3
protocol
applicat
 
Key to a
architect
users, to
• Service Pro
• End User A
• External IS
• Augments
• Control app
• Elementary
• Simplified
• Augmente
• Data plane
2: The SDN “
distributed c
w
pecifically, n
ng of a distr
ome contro
stributed. O
central glob
ed control p
he best evol
(including le
that optimiz
o improve o
ties for netw
: SDN arch
ls and APIs
ions.  
achieve bett
ture that all
o interact w
Applica ons
ovider Applica ons – OSS/BSS, O
Applica ons
Ps / Content Providers
SDN Controller
distributed control plane
plica on – func on specific
y Infrastructure Func ons– com
Network
distributed control plane
d by central controllers
e forwarding
Controller NB APIs
Device Level APIs
“hybrid” co
control-plan
well as appli
networks ar
ributed con
ol plane func
On the othe
al view of e
plane with c
lution towa
egacy) conf
zes the netw
orchestratio
work servic
itecture for
, and servic
ter network
lows user a
with the netw
Orchestra on etc
mon pla orm
ontrol-plane
ne (left) thro
ications, an
re currently
ntrol plane,
ctions, such
er hand, op
end-to-end
centralized
rds network
figuration c
work perfor
on and prov
e differentia
advanced n
ce and netw
k monetizat
applications
work and im
e evolution
ough the int
nd network-
built using
with little or
h as rapid I
timal traffic
network co
intelligence
k optimizati
apabilities t
mance for s
isioning, th
ation.
network co
work optimiz
ion and opt
s, operated
mprove perf
augments t
troduction
programma
routing/sw
r no interac
IGP conver
c placement
onditions [4]
e and a pro
ion. This h
to be comb
specific app
us offering
ntrol throug
zation throu
timization is
by service
formance, e
the function
of centraliz
atic APIs.
witching plat
ction with th
rgence, wor
t can certai
]. Combinin
ogrammable
ybrid appro
bined with c
plications, f
significant
gh “southb
ugh “northb
s a program
provider, o
ease mana
nality of the
zed control,
tforms
he applicatio
rk indeed b
inly benefit
ng the
e infrastruc
oach allows
centralized
flows, or us
new
bound”
bound”
mmable, op
or even end
gement, or
	
e pre-
as
on
best
cture,
s
sers,
pen,
d-
r
increase infrastructure utilization. A complete such SDN architecture shall include the
following four basic building blocks (Figure 3):
 
 SDN Controller(s): the set of software tools, and technologies that offer
centralized intelligence, network abstraction (northbound), and programmatic
network control (southbound).
 Infrastructure: physical and virtual network elements, which in the case of the
WAN can also include multiple layers; e.g. extend to optical transport [5].
 Application Programming Interfaces: APIs and protocols that enable
programmability at multiple levels of the SDN infrastructure. At the lowest level,
device level programmatic interfaces and protocols enable SDN control of network
elements. Separate, northbound APIs in the SDN architecture allow end-user
applications to communicate with the controller layers.
 Applications: the most important and novel aspect of SDN that enables network
operators or end users to program the network through controller(s).
These “top” layer software applications can utilize APIs exposed by the controller to
request specific behavior from the network, or gather information about the network.
These APIs enable business processes to be programmed and become part of the
network operations, and should also facilitate graceful migration and integration with the
existing BSS/OSS. Representational State Transfer (REST) APIs have emerged as the
de-facto standard framework for the interaction between these applications and the
controller layers [6].
Currently, the available, first generation, SDN controllers are application specific and
typically designed to interact directly with network, each one independently. For simple
network designs, such applications controllers may be acceptable. However, in large
networks, and particularly in highly heterogeneous WAN, where the control functions
need to interface with many devices using a multitude of protocols, such first generation
designs would result in significant additional development effort, and limit scale, as
network devices are touched for data retrieval and programming by many different
functions. Therefore, the most scalable SDN WAN architecture could benefit from a
unified single infrastructure controller that in turn enables all the different higher layer
application specific controllers to interact with the network in a common framework. The
unified infrastructure controller can then provide a common view of the network, gather
and hold network information, provide centralized control functions, and program each
network element using the appropriate device level APIs and/or network protocols. This
functional separation between “application controllers” and the “infrastructure controller”
allows for: 1) A unified infrastructure that provides a single point of contact to the
network, both for information retrieval and programming, and 2) Each application
controller to not be concerned with the precise mechanisms for interacting with the
network, like the device specific API, or protocol applicable in each network element.
Open Da
Foundat
SDN thr
enables
ODL infr
network
basic ne
The SDN
operatio
NETCO
“southbo
include:
Element
its Path
An impo
leveragi
multiven
for conv
protocol
architect
innovatio
Figur
There ar
innovatio
applicati
 A pa
Rout
aylight (OD
tion, has be
rough the cr
both eleme
rastructure
service fun
etwork func
N “southbo
ons, and ha
NF and YA
ound” progr
Open Flow
t Protocol (
Computatio
ortant value
ng open so
ndor networ
verged mult
details from
ture mature
ons of each
e 4: Examp
re multiple
ons describ
ions are as
rticular netw
ting innovat
DL), an indu
een formed
reation of a
entary infra
platform co
nctions, and
tions for en
und” APIs a
ve also offe
ANG may be
rammatic A
w, the exten
PCEP) to a
on Clients (
of these S
ource imple
rks. Even m
ivendor net
m the netw
es, the netw
h protocol,
ple of an SD
SDN contro
bed above,
sociated ei
work techn
tions that le
ustry-wide, o
with the go
a common m
astructure fu
onsists of m
d also a Se
nd-user app
and protoco
ered signific
e the most
APIs. Other
nsions of the
allow for sta
(PCC), and
DN protoco
mentations
more impor
twork progr
ork users.
work applica
become the
N applicatio
oller applica
to advance
ther with:
ology, like f
everage SD
open sourc
oal of furthe
multivendor
unctions an
many southb
ervice Abstr
plications.
ols are impo
cant innova
notable pro
r notable “s
e IETF stan
ate-aware p
the link-sta
ols is that th
s - standard
rtant, a sop
rammability
Therefore,
ations, rath
e important
 
on for netw
ations that
e the WAN
for example
DN with sou
ce, project o
ering the ad
r controller
nd controlle
bound APIs
raction Laye
ortant in en
ations. As a
otocol innov
southbound
ndard for th
provisioning
ate extensio
hey are typ
ds that allow
histicated S
y that essen
as the SD
her than the
t focus.
work moneti
can leverag
service del
e the recen
urce routing
operating u
doption and
platform [7
r applicatio
s and “plug
er (SAL) tha
nabling imp
already me
vation exam
d” innovation
he Path Com
g, and activ
ons for BG
ically open
w for hetero
SDN infrast
ntially “abst
N evolution
e specific de
zation and
ge the SDN
livery. Typ
nt, importan
g to simplify
nder the Li
d innovation
7]. ODL
ons [7]. The
-ins”, basic
at abstracts
proved netw
entioned,
mple of
n examples
mputation
e operation
P (BGP-LS
- often
ogeneous,
tructure allo
tracts away
n of the WA
etails and
optimizatio
N infrastruct
ically, these
nt Segment
y network an
nux
n of
e
c
s the
work
s
n on
S).
ows
y” the
AN
 
on.  
ture
e
nd
service engineering by removing most complex state from the distributed control-
plane [8],
 Workflow automation of services or network functions like analytics, policy,
optimization, or orchestration [9].
Figure 4 describes the basic implementation of a significant such SDN optimization
application specifically for services with well-defined profiles, which include most
business services. For such “controllable” services, when the provider does not need to
guarantee the exact timing of delivery, e.g. asynchronous bulk data transfers, an
intelligent WAN SDN controller can time shift these services away from times of high
next utilization (“peaks”) to times of otherwise low network utilization (“valleys”).
Alternatively, for services that are controllable but with timing well-defined and inflexible
scheduling (e.g. synchronous business data backups), an SDN WAN controller
application can instead leverage network information (gathered potentially real-time) on
utilization, or failures, or other performance attributes, to identify the optimal routing for
this traffic given its specific SLA requirements. The same unified SDN controller then
can potentially also program the required LSPs in the network, perhaps by using PCEP
as the southbound protocol. A very good example of an actual WAN deployment that
leverages such an intelligent SDN implementation to optimize the network delivery of
controllable services has been extensively analyzed in [10].
As mentioned in the beginning of this paper, a sophisticated SDN infrastructure enables
a network vision where user-defined applications allow optimal placement of each new
service instance according to user-defined SLA or network utilization constraints, based
on advanced network optimization that leverages “global” network awareness of
topology, traffic, or location of the required content, compute, or storage resources, as
for example described in [3]. Until now, slow service provisioning has allowed off-line
planning, occasionally coupled with traffic engineering, to address sufficiently the traffic
management needs of WAN networks. As cloud services deployment proliferates,
faster NFV and SDN service provisioning can be significantly enhanced by advanced
network control capabilities that optimize the trade-offs between SLA performance and
network utilization, allowing for better network monetization. This programmability
becomes important for the overall evolution of WAN architectures to the network cloud
era of cable and telecom operators [11].
 
 
In summary, this paper outlines the main benefits SDN and NFV can bring to network
service delivery, especially for business services. Most notably, SDN and NFV
enhancements to the already ubiquitous cloud model can add new functionality, and
ensure customer loyalty for applications such as dynamic business VPNs, or policy-
based service delivery, at the edge of the network. They also remove many of the
legacy constraints among the access, WAN, and the data center, and enable more
advanced demand engineering, and capacity optimization at the core. An evolutionary
approach to the adoption of SDN is being proposed, based on a “hybrid” control plane
architecture that combines the current distributed control-plane routing infrastructure,
with a unified SDN “controller” platform that provides new significant network visibility
and programmability. The SDN controller capabilities are enhanced by innovations in
network protocols, APIs, and most notably new user-defined applications. The SDN
evolution is complemented by the NFV capabilities. NFV services provide the real-time
network resource management needed to support new applications, deployed on-
demand, and with the ability to choose where each service may be placed. Equally
important, SDN and NFV are enhanced by common platforms for orchestration that can
manage service chains across hybrid cloud and data-center architectures to help deliver
seamless connectivity between compute services in the enterprise and the cloud.
These increasingly maturing SDN and NFV innovations offer an important opportunity
for service providers to better monetize their networks, by improving the time-to-market,
and SLAs guarantees for premium services, as well as the network utilization of volume-
based service delivery.
 
 
Bibliography
The authors would like to acknowledge many insightful discussions with colleagues at
Cox and Cisco, including Jeff Finkelstein, Simon Spraggs, and Alon Bernstein.
1. https://www.opennetworking.org/sdn-resources/sdn-library/whitepapers
2. http://portal.etsi.org/home.aspx
3. J. Evans, et al “SDN-based traffic management…”, MPLS World Congress 2014
4. M. Horneffer, “IGP Tuning in an MPLS Network”, NANOG 33, February 2005
5. M. Khaddam, et al, Multilayer Network Optimization, invited paper IEEE OFC 2015
6. http://en.wikipedia.org/wiki/Representational_state_transfer
7. http://www.opendaylight.org/project/technical-overview
8. http://tools.ietf.org/html/draft-martin-spring-segment-routing-ipv6-use-cases-00
9. D. Ward, “Simplifying the WAN...”, Plenary (d1-08), MPLS World Congress 2014
10. http://cseweb.ucsd.edu/~vahdat/papers/b4-sigcomm13.pdf
11.L. Paraschis “Advancements in Network Architectures…”, pp. 793–817 in Op. Fib.
Telecom. VI B, Elsevier 2013. (ISBN 978-0123969606)

More Related Content

What's hot

Considerations for Deploying Virtual Network Functions and Services
Considerations for Deploying Virtual Network Functions and ServicesConsiderations for Deploying Virtual Network Functions and Services
Considerations for Deploying Virtual Network Functions and ServicesOpen Networking Summit
 
Research Challenges and Opportunities in the Era of the Internet of Everythin...
Research Challenges and Opportunities in the Era of the Internet of Everythin...Research Challenges and Opportunities in the Era of the Internet of Everythin...
Research Challenges and Opportunities in the Era of the Internet of Everythin...Stenio Fernandes
 
Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...
Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...
Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...Infinera
 
Networking Technology Transformation to SDN and NFV
Networking Technology Transformation to SDN and NFVNetworking Technology Transformation to SDN and NFV
Networking Technology Transformation to SDN and NFVHimawan Nugroho
 
FlowN vs FlowVisor: Scalable Network Virtualization in SDN
FlowN vs FlowVisor: Scalable Network Virtualization in SDNFlowN vs FlowVisor: Scalable Network Virtualization in SDN
FlowN vs FlowVisor: Scalable Network Virtualization in SDNHao Jiang
 
Software defined optical communication
Software defined optical communicationSoftware defined optical communication
Software defined optical communicationRonak Vyas
 
How network operators improve their efficiency and prepare for market consoli...
How network operators improve their efficiency and prepare for market consoli...How network operators improve their efficiency and prepare for market consoli...
How network operators improve their efficiency and prepare for market consoli...Comarch
 
SDN & NFV Orchestration
SDN & NFV OrchestrationSDN & NFV Orchestration
SDN & NFV OrchestrationTanto Suratno
 
Networking Challenges for the Next Decade
Networking Challenges for the Next DecadeNetworking Challenges for the Next Decade
Networking Challenges for the Next DecadeOpen Networking Summit
 
How will virtual networks, controlled by software, impact OSS systems?
How will virtual networks, controlled by software, impact OSS systems?How will virtual networks, controlled by software, impact OSS systems?
How will virtual networks, controlled by software, impact OSS systems?Comarch
 
Colt SD-WAN experience learnings and future plans
Colt SD-WAN experience learnings and future plansColt SD-WAN experience learnings and future plans
Colt SD-WAN experience learnings and future plansColt Technology Services
 
Colt sdn-and-nfv-experience-lernings-and-future-plans
Colt sdn-and-nfv-experience-lernings-and-future-plansColt sdn-and-nfv-experience-lernings-and-future-plans
Colt sdn-and-nfv-experience-lernings-and-future-plansJavier Benitez
 
A Survey of Recent Advances in Network Planning/Traffic Engineering (TE) Tools
A Survey of Recent Advances in Network Planning/Traffic Engineering (TE) ToolsA Survey of Recent Advances in Network Planning/Traffic Engineering (TE) Tools
A Survey of Recent Advances in Network Planning/Traffic Engineering (TE) ToolsVishal Sharma, Ph.D.
 

What's hot (20)

Considerations for Deploying Virtual Network Functions and Services
Considerations for Deploying Virtual Network Functions and ServicesConsiderations for Deploying Virtual Network Functions and Services
Considerations for Deploying Virtual Network Functions and Services
 
Research Challenges and Opportunities in the Era of the Internet of Everythin...
Research Challenges and Opportunities in the Era of the Internet of Everythin...Research Challenges and Opportunities in the Era of the Internet of Everythin...
Research Challenges and Opportunities in the Era of the Internet of Everythin...
 
Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...
Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...
Realizing a Multi-Layer Transport SDN: Practical Considerations and Implement...
 
Colt inter-provider SDN NNIs and APIs
Colt inter-provider SDN NNIs and APIsColt inter-provider SDN NNIs and APIs
Colt inter-provider SDN NNIs and APIs
 
Networking Technology Transformation to SDN and NFV
Networking Technology Transformation to SDN and NFVNetworking Technology Transformation to SDN and NFV
Networking Technology Transformation to SDN and NFV
 
FlowN vs FlowVisor: Scalable Network Virtualization in SDN
FlowN vs FlowVisor: Scalable Network Virtualization in SDNFlowN vs FlowVisor: Scalable Network Virtualization in SDN
FlowN vs FlowVisor: Scalable Network Virtualization in SDN
 
Software defined optical communication
Software defined optical communicationSoftware defined optical communication
Software defined optical communication
 
How network operators improve their efficiency and prepare for market consoli...
How network operators improve their efficiency and prepare for market consoli...How network operators improve their efficiency and prepare for market consoli...
How network operators improve their efficiency and prepare for market consoli...
 
Software Defined Networking – Virtualization of Traffic Engineering
Software Defined Networking – Virtualization of Traffic EngineeringSoftware Defined Networking – Virtualization of Traffic Engineering
Software Defined Networking – Virtualization of Traffic Engineering
 
Software Defined RAN
Software Defined RANSoftware Defined RAN
Software Defined RAN
 
SDN & NFV Orchestration
SDN & NFV OrchestrationSDN & NFV Orchestration
SDN & NFV Orchestration
 
Networking Challenges for the Next Decade
Networking Challenges for the Next DecadeNetworking Challenges for the Next Decade
Networking Challenges for the Next Decade
 
DNIS in SRC
DNIS in SRCDNIS in SRC
DNIS in SRC
 
How will virtual networks, controlled by software, impact OSS systems?
How will virtual networks, controlled by software, impact OSS systems?How will virtual networks, controlled by software, impact OSS systems?
How will virtual networks, controlled by software, impact OSS systems?
 
Colt SD-WAN experience learnings and future plans
Colt SD-WAN experience learnings and future plansColt SD-WAN experience learnings and future plans
Colt SD-WAN experience learnings and future plans
 
Microservice Powered Orchestration
Microservice Powered OrchestrationMicroservice Powered Orchestration
Microservice Powered Orchestration
 
Colt sdn-and-nfv-experience-lernings-and-future-plans
Colt sdn-and-nfv-experience-lernings-and-future-plansColt sdn-and-nfv-experience-lernings-and-future-plans
Colt sdn-and-nfv-experience-lernings-and-future-plans
 
Software Defined Future
Software Defined FutureSoftware Defined Future
Software Defined Future
 
A Survey of Recent Advances in Network Planning/Traffic Engineering (TE) Tools
A Survey of Recent Advances in Network Planning/Traffic Engineering (TE) ToolsA Survey of Recent Advances in Network Planning/Traffic Engineering (TE) Tools
A Survey of Recent Advances in Network Planning/Traffic Engineering (TE) Tools
 
Adoption of SDN: Progress Update
Adoption of SDN: Progress UpdateAdoption of SDN: Progress Update
Adoption of SDN: Progress Update
 

Viewers also liked (10)

Narayana_Reddy_CV
Narayana_Reddy_CVNarayana_Reddy_CV
Narayana_Reddy_CV
 
RCEC Email 5.19.03 (b)
RCEC Email 5.19.03 (b)RCEC Email 5.19.03 (b)
RCEC Email 5.19.03 (b)
 
Ppt22
Ppt22Ppt22
Ppt22
 
Handwritten Notes (a)
Handwritten Notes (a)Handwritten Notes (a)
Handwritten Notes (a)
 
Balance Score Card - Carlos Verde
Balance Score Card - Carlos VerdeBalance Score Card - Carlos Verde
Balance Score Card - Carlos Verde
 
EPA DROE Email 6.24.03
EPA DROE Email 6.24.03EPA DROE Email 6.24.03
EPA DROE Email 6.24.03
 
Media in our lives
Media in our livesMedia in our lives
Media in our lives
 
ΑΜΕΑ
ΑΜΕΑΑΜΕΑ
ΑΜΕΑ
 
RCEC Email 6.23.03 (a)
RCEC Email 6.23.03 (a)RCEC Email 6.23.03 (a)
RCEC Email 6.23.03 (a)
 
Handwritten Notes (b)
Handwritten Notes (b)Handwritten Notes (b)
Handwritten Notes (b)
 

Similar to SDN and NFV Value in Business Services: Innovations in Network Monetization and Optimization

SDN and NFV Value in Business Services: Innovations in Network Monetization a...
SDN and NFV Value in Business Services: Innovations in Network Monetization a...SDN and NFV Value in Business Services: Innovations in Network Monetization a...
SDN and NFV Value in Business Services: Innovations in Network Monetization a...Alan Sardella
 
SD_WAN_NFV_White_Paper
SD_WAN_NFV_White_PaperSD_WAN_NFV_White_Paper
SD_WAN_NFV_White_PaperMarc Curtis
 
Virtualizing Telco Networks
Virtualizing Telco NetworksVirtualizing Telco Networks
Virtualizing Telco NetworksNetAppUK
 
Virtualizing Telco Networks | Whitepaper
Virtualizing Telco Networks | WhitepaperVirtualizing Telco Networks | Whitepaper
Virtualizing Telco Networks | WhitepaperNetApp
 
Why Network Functions Virtualization sdn?
Why Network Functions Virtualization sdn?Why Network Functions Virtualization sdn?
Why Network Functions Virtualization sdn?idrajeev
 
White Paper: The Distributed Cloud
White Paper: The Distributed CloudWhite Paper: The Distributed Cloud
White Paper: The Distributed CloudGCC Computers
 
Xura NFV and Messaging Infrastructure_WP_1.0
Xura NFV and Messaging Infrastructure_WP_1.0Xura NFV and Messaging Infrastructure_WP_1.0
Xura NFV and Messaging Infrastructure_WP_1.0Graham McInnes
 
Vmware vcloud nfv sdwan
Vmware vcloud nfv   sdwanVmware vcloud nfv   sdwan
Vmware vcloud nfv sdwanVersos
 
ACG Research Paper: Business Case for Cisco Evolved Services Platform and NFV
ACG Research Paper: Business Case for Cisco Evolved Services Platform and NFVACG Research Paper: Business Case for Cisco Evolved Services Platform and NFV
ACG Research Paper: Business Case for Cisco Evolved Services Platform and NFVCisco Service Provider
 
Heavy reading sdn_metro_networks
Heavy reading sdn_metro_networksHeavy reading sdn_metro_networks
Heavy reading sdn_metro_networksthiru1324
 
Container ecosystem based PaaS solution for Telco Cloud Analysis and Proposal
Container ecosystem based PaaS solution for Telco Cloud Analysis and ProposalContainer ecosystem based PaaS solution for Telco Cloud Analysis and Proposal
Container ecosystem based PaaS solution for Telco Cloud Analysis and ProposalKrishna-Kumar
 
How can SDN and NFV Improve Your Business_ - Techwave.pdf
How can SDN and NFV Improve Your Business_ - Techwave.pdfHow can SDN and NFV Improve Your Business_ - Techwave.pdf
How can SDN and NFV Improve Your Business_ - Techwave.pdfAnil
 
An Investigation into Convergence of Networking and Storage Solutions
An Investigation into Convergence of Networking and Storage Solutions An Investigation into Convergence of Networking and Storage Solutions
An Investigation into Convergence of Networking and Storage Solutions Blesson Babu
 
What is network service orchestration
What is network service orchestrationWhat is network service orchestration
What is network service orchestrationSaurabh Agrawal
 
Virtualizing network services
Virtualizing network servicesVirtualizing network services
Virtualizing network servicesBootcamp SCL
 
Software-Defined Networking (SDN): An Opportunity?
Software-Defined Networking (SDN): An Opportunity?Software-Defined Networking (SDN): An Opportunity?
Software-Defined Networking (SDN): An Opportunity?Ahmed Banafa
 
Practical active network services within content-aware gateways
Practical active network services within content-aware gatewaysPractical active network services within content-aware gateways
Practical active network services within content-aware gatewaysTal Lavian Ph.D.
 
Service provider-considerations
Service provider-considerationsService provider-considerations
Service provider-considerationsWeam Salem
 

Similar to SDN and NFV Value in Business Services: Innovations in Network Monetization and Optimization (20)

SDN and NFV Value in Business Services: Innovations in Network Monetization a...
SDN and NFV Value in Business Services: Innovations in Network Monetization a...SDN and NFV Value in Business Services: Innovations in Network Monetization a...
SDN and NFV Value in Business Services: Innovations in Network Monetization a...
 
SD_WAN_NFV_White_Paper
SD_WAN_NFV_White_PaperSD_WAN_NFV_White_Paper
SD_WAN_NFV_White_Paper
 
Virtualizing Telco Networks
Virtualizing Telco NetworksVirtualizing Telco Networks
Virtualizing Telco Networks
 
Virtualizing Telco Networks | Whitepaper
Virtualizing Telco Networks | WhitepaperVirtualizing Telco Networks | Whitepaper
Virtualizing Telco Networks | Whitepaper
 
Why Network Functions Virtualization sdn?
Why Network Functions Virtualization sdn?Why Network Functions Virtualization sdn?
Why Network Functions Virtualization sdn?
 
White Paper: The Distributed Cloud
White Paper: The Distributed CloudWhite Paper: The Distributed Cloud
White Paper: The Distributed Cloud
 
Xura NFV and Messaging Infrastructure_WP_1.0
Xura NFV and Messaging Infrastructure_WP_1.0Xura NFV and Messaging Infrastructure_WP_1.0
Xura NFV and Messaging Infrastructure_WP_1.0
 
Vmware vcloud nfv sdwan
Vmware vcloud nfv   sdwanVmware vcloud nfv   sdwan
Vmware vcloud nfv sdwan
 
Virtuora Catalog_lowres
Virtuora Catalog_lowresVirtuora Catalog_lowres
Virtuora Catalog_lowres
 
ACG Research Paper: Business Case for Cisco Evolved Services Platform and NFV
ACG Research Paper: Business Case for Cisco Evolved Services Platform and NFVACG Research Paper: Business Case for Cisco Evolved Services Platform and NFV
ACG Research Paper: Business Case for Cisco Evolved Services Platform and NFV
 
Heavy reading sdn_metro_networks
Heavy reading sdn_metro_networksHeavy reading sdn_metro_networks
Heavy reading sdn_metro_networks
 
Container ecosystem based PaaS solution for Telco Cloud Analysis and Proposal
Container ecosystem based PaaS solution for Telco Cloud Analysis and ProposalContainer ecosystem based PaaS solution for Telco Cloud Analysis and Proposal
Container ecosystem based PaaS solution for Telco Cloud Analysis and Proposal
 
How can SDN and NFV Improve Your Business_ - Techwave.pdf
How can SDN and NFV Improve Your Business_ - Techwave.pdfHow can SDN and NFV Improve Your Business_ - Techwave.pdf
How can SDN and NFV Improve Your Business_ - Techwave.pdf
 
An Investigation into Convergence of Networking and Storage Solutions
An Investigation into Convergence of Networking and Storage Solutions An Investigation into Convergence of Networking and Storage Solutions
An Investigation into Convergence of Networking and Storage Solutions
 
What is network service orchestration
What is network service orchestrationWhat is network service orchestration
What is network service orchestration
 
Virtualizing network services
Virtualizing network servicesVirtualizing network services
Virtualizing network services
 
N fv good
N fv goodN fv good
N fv good
 
Software-Defined Networking (SDN): An Opportunity?
Software-Defined Networking (SDN): An Opportunity?Software-Defined Networking (SDN): An Opportunity?
Software-Defined Networking (SDN): An Opportunity?
 
Practical active network services within content-aware gateways
Practical active network services within content-aware gatewaysPractical active network services within content-aware gateways
Practical active network services within content-aware gateways
 
Service provider-considerations
Service provider-considerationsService provider-considerations
Service provider-considerations
 

More from Cisco Service Provider

SP Network Automation: Automated Operations Overview
SP Network Automation: Automated Operations Overview SP Network Automation: Automated Operations Overview
SP Network Automation: Automated Operations Overview Cisco Service Provider
 
[Whitepaper] Cisco Vision: 5G - THRIVING INDOORS
[Whitepaper] Cisco Vision: 5G - THRIVING INDOORS[Whitepaper] Cisco Vision: 5G - THRIVING INDOORS
[Whitepaper] Cisco Vision: 5G - THRIVING INDOORSCisco Service Provider
 
[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...
[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...
[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...Cisco Service Provider
 
[Infographic] Cisco Visual Networking Index (VNI): Mobile Users Growth
[Infographic] Cisco Visual Networking Index (VNI): Mobile Users Growth[Infographic] Cisco Visual Networking Index (VNI): Mobile Users Growth
[Infographic] Cisco Visual Networking Index (VNI): Mobile Users GrowthCisco Service Provider
 
Cisco Cloud-Scale Innovation Infographic
Cisco Cloud-Scale Innovation InfographicCisco Cloud-Scale Innovation Infographic
Cisco Cloud-Scale Innovation InfographicCisco Service Provider
 
Operator Drives Bandwidth Efficiency and Optimizes Satellite Link Performance
Operator Drives Bandwidth Efficiency and Optimizes Satellite Link PerformanceOperator Drives Bandwidth Efficiency and Optimizes Satellite Link Performance
Operator Drives Bandwidth Efficiency and Optimizes Satellite Link PerformanceCisco Service Provider
 
Application Engineered Routing Segment Routing and the Cisco WAN Automation ...
Application Engineered Routing  Segment Routing and the Cisco WAN Automation ...Application Engineered Routing  Segment Routing and the Cisco WAN Automation ...
Application Engineered Routing Segment Routing and the Cisco WAN Automation ...Cisco Service Provider
 
Research Highlight: Independent Validation of Cisco Service Provider Virtuali...
Research Highlight: Independent Validation of Cisco Service Provider Virtuali...Research Highlight: Independent Validation of Cisco Service Provider Virtuali...
Research Highlight: Independent Validation of Cisco Service Provider Virtuali...Cisco Service Provider
 
Cisco Policy Suite for Service Providers
Cisco Policy Suite for Service ProvidersCisco Policy Suite for Service Providers
Cisco Policy Suite for Service ProvidersCisco Service Provider
 
Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...
Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...
Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...Cisco Service Provider
 
Segment Routing: Prepare Your Network For New Business Models
Segment Routing:  Prepare Your Network For New Business ModelsSegment Routing:  Prepare Your Network For New Business Models
Segment Routing: Prepare Your Network For New Business ModelsCisco Service Provider
 
Cisco Virtual Managed Services: Transform Your Business with Cloud-based Inn...
Cisco Virtual Managed Services:  Transform Your Business with Cloud-based Inn...Cisco Virtual Managed Services:  Transform Your Business with Cloud-based Inn...
Cisco Virtual Managed Services: Transform Your Business with Cloud-based Inn...Cisco Service Provider
 
Cisco Virtual Managed Services Solution
Cisco Virtual Managed Services SolutionCisco Virtual Managed Services Solution
Cisco Virtual Managed Services SolutionCisco Service Provider
 
Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...
Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...
Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...Cisco Service Provider
 

More from Cisco Service Provider (20)

SP 5G: Unified Enablement Platform
SP 5G: Unified Enablement Platform  SP 5G: Unified Enablement Platform
SP 5G: Unified Enablement Platform
 
SP Network Automation: Automated Operations Overview
SP Network Automation: Automated Operations Overview SP Network Automation: Automated Operations Overview
SP Network Automation: Automated Operations Overview
 
[Whitepaper] Cisco Vision: 5G - THRIVING INDOORS
[Whitepaper] Cisco Vision: 5G - THRIVING INDOORS[Whitepaper] Cisco Vision: 5G - THRIVING INDOORS
[Whitepaper] Cisco Vision: 5G - THRIVING INDOORS
 
Cisco at OFC 2016
Cisco at OFC 2016Cisco at OFC 2016
Cisco at OFC 2016
 
[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...
[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...
[Infographic] Cisco Visual Networking Index (VNI): Mobile-Connected Devices p...
 
[Infographic] Cisco Visual Networking Index (VNI): Mobile Users Growth
[Infographic] Cisco Visual Networking Index (VNI): Mobile Users Growth[Infographic] Cisco Visual Networking Index (VNI): Mobile Users Growth
[Infographic] Cisco Visual Networking Index (VNI): Mobile Users Growth
 
Cisco Cloud-Scale Innovation Infographic
Cisco Cloud-Scale Innovation InfographicCisco Cloud-Scale Innovation Infographic
Cisco Cloud-Scale Innovation Infographic
 
Simplify Operations
Simplify OperationsSimplify Operations
Simplify Operations
 
Expand Your Market Opportunities
Expand Your Market OpportunitiesExpand Your Market Opportunities
Expand Your Market Opportunities
 
Orchestrated Assurance
Orchestrated Assurance Orchestrated Assurance
Orchestrated Assurance
 
Operator Drives Bandwidth Efficiency and Optimizes Satellite Link Performance
Operator Drives Bandwidth Efficiency and Optimizes Satellite Link PerformanceOperator Drives Bandwidth Efficiency and Optimizes Satellite Link Performance
Operator Drives Bandwidth Efficiency and Optimizes Satellite Link Performance
 
Application Engineered Routing Segment Routing and the Cisco WAN Automation ...
Application Engineered Routing  Segment Routing and the Cisco WAN Automation ...Application Engineered Routing  Segment Routing and the Cisco WAN Automation ...
Application Engineered Routing Segment Routing and the Cisco WAN Automation ...
 
Research Highlight: Independent Validation of Cisco Service Provider Virtuali...
Research Highlight: Independent Validation of Cisco Service Provider Virtuali...Research Highlight: Independent Validation of Cisco Service Provider Virtuali...
Research Highlight: Independent Validation of Cisco Service Provider Virtuali...
 
Cisco Policy Suite for Service Providers
Cisco Policy Suite for Service ProvidersCisco Policy Suite for Service Providers
Cisco Policy Suite for Service Providers
 
Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...
Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...
Deploy New Technologies Quickly with Cisco Managed Services for Service Provi...
 
Segment Routing: Prepare Your Network For New Business Models
Segment Routing:  Prepare Your Network For New Business ModelsSegment Routing:  Prepare Your Network For New Business Models
Segment Routing: Prepare Your Network For New Business Models
 
Cisco Virtual Managed Services: Transform Your Business with Cloud-based Inn...
Cisco Virtual Managed Services:  Transform Your Business with Cloud-based Inn...Cisco Virtual Managed Services:  Transform Your Business with Cloud-based Inn...
Cisco Virtual Managed Services: Transform Your Business with Cloud-based Inn...
 
Cisco Virtual Managed Services Solution
Cisco Virtual Managed Services SolutionCisco Virtual Managed Services Solution
Cisco Virtual Managed Services Solution
 
Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...
Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...
Cisco cBR-8 Evolved CCAP: Deliver Scalable Network and Service Growth at a Lo...
 
IPv6: Unleashing The Power
IPv6: Unleashing The PowerIPv6: Unleashing The Power
IPv6: Unleashing The Power
 

Recently uploaded

TrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data PrivacyTrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data PrivacyTrustArc
 
How to write a Business Continuity Plan
How to write a Business Continuity PlanHow to write a Business Continuity Plan
How to write a Business Continuity PlanDatabarracks
 
What is Artificial Intelligence?????????
What is Artificial Intelligence?????????What is Artificial Intelligence?????????
What is Artificial Intelligence?????????blackmambaettijean
 
New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024BookNet Canada
 
Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 365Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 3652toLead Limited
 
Scale your database traffic with Read & Write split using MySQL Router
Scale your database traffic with Read & Write split using MySQL RouterScale your database traffic with Read & Write split using MySQL Router
Scale your database traffic with Read & Write split using MySQL RouterMydbops
 
SALESFORCE EDUCATION CLOUD | FEXLE SERVICES
SALESFORCE EDUCATION CLOUD | FEXLE SERVICESSALESFORCE EDUCATION CLOUD | FEXLE SERVICES
SALESFORCE EDUCATION CLOUD | FEXLE SERVICESmohitsingh558521
 
What is DBT - The Ultimate Data Build Tool.pdf
What is DBT - The Ultimate Data Build Tool.pdfWhat is DBT - The Ultimate Data Build Tool.pdf
What is DBT - The Ultimate Data Build Tool.pdfMounikaPolabathina
 
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptxUse of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptxLoriGlavin3
 
Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!Commit University
 
unit 4 immunoblotting technique complete.pptx
unit 4 immunoblotting technique complete.pptxunit 4 immunoblotting technique complete.pptx
unit 4 immunoblotting technique complete.pptxBkGupta21
 
Sample pptx for embedding into website for demo
Sample pptx for embedding into website for demoSample pptx for embedding into website for demo
Sample pptx for embedding into website for demoHarshalMandlekar2
 
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptxMerck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptxLoriGlavin3
 
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024BookNet Canada
 
DevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache MavenDevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache MavenHervé Boutemy
 
Dev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebDev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebUiPathCommunity
 
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek SchlawackFwdays
 
TeamStation AI System Report LATAM IT Salaries 2024
TeamStation AI System Report LATAM IT Salaries 2024TeamStation AI System Report LATAM IT Salaries 2024
TeamStation AI System Report LATAM IT Salaries 2024Lonnie McRorey
 
Gen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdfGen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdfAddepto
 
How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.Curtis Poe
 

Recently uploaded (20)

TrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data PrivacyTrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data Privacy
 
How to write a Business Continuity Plan
How to write a Business Continuity PlanHow to write a Business Continuity Plan
How to write a Business Continuity Plan
 
What is Artificial Intelligence?????????
What is Artificial Intelligence?????????What is Artificial Intelligence?????????
What is Artificial Intelligence?????????
 
New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
 
Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 365Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 365
 
Scale your database traffic with Read & Write split using MySQL Router
Scale your database traffic with Read & Write split using MySQL RouterScale your database traffic with Read & Write split using MySQL Router
Scale your database traffic with Read & Write split using MySQL Router
 
SALESFORCE EDUCATION CLOUD | FEXLE SERVICES
SALESFORCE EDUCATION CLOUD | FEXLE SERVICESSALESFORCE EDUCATION CLOUD | FEXLE SERVICES
SALESFORCE EDUCATION CLOUD | FEXLE SERVICES
 
What is DBT - The Ultimate Data Build Tool.pdf
What is DBT - The Ultimate Data Build Tool.pdfWhat is DBT - The Ultimate Data Build Tool.pdf
What is DBT - The Ultimate Data Build Tool.pdf
 
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptxUse of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
 
Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!
 
unit 4 immunoblotting technique complete.pptx
unit 4 immunoblotting technique complete.pptxunit 4 immunoblotting technique complete.pptx
unit 4 immunoblotting technique complete.pptx
 
Sample pptx for embedding into website for demo
Sample pptx for embedding into website for demoSample pptx for embedding into website for demo
Sample pptx for embedding into website for demo
 
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptxMerck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptx
 
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
 
DevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache MavenDevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache Maven
 
Dev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebDev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio Web
 
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
 
TeamStation AI System Report LATAM IT Salaries 2024
TeamStation AI System Report LATAM IT Salaries 2024TeamStation AI System Report LATAM IT Salaries 2024
TeamStation AI System Report LATAM IT Salaries 2024
 
Gen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdfGen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdf
 
How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.
 

SDN and NFV Value in Business Services: Innovations in Network Monetization and Optimization

  • 1. SDN and NFV value in Business Services. Innovations in Network Monetization and Optimization. A Technical Paper prepared for the Society of Cable Telecommunications Engineers By Mazen Khaddam Network Architect Cox Atlanta Mazen.Khaddam@cox.com Loukas Paraschis Technology Solution Architect cisco, loukas@cisco.com
  • 2. Overview The increasingly maturing SDN and NFV innovations offer an important opportunity for service providers to better monetize their networks, by improving the time-to-market, and SLAs guarantees for premium services, as well as the network utilization of volume- based service delivery. This paper outlines the main benefits SDN and NFV can bring to network service delivery, especially for business services, motivating the adoption of SDN and NFV in the network architecture. Most notably, SDN and NFV enhancements to the already ubiquitous cloud model can improve time-to-market, add new functionality, and ensure customer loyalty for applications such as dynamic capacity business VPNs, or policy-based service delivery, at the edge of the network. They also remove many of the legacy constraints among the access, WAN, and the data center, and enable advanced demand engineering, and capacity optimization at the core. To this end, an evolutionary approach to the adoption of SDN is being proposed, based on a “hybrid” control plane architecture that combines the current distributed control- plane routing infrastructure, with a unified “controller” platform that provides new significant network visibility and programmability. The SDN controller capabilities are enhanced by innovations in network protocols, APIs, and most notably new user- defined network applications. The SDN evolution is complemented by the NFV capabilities. NFV services provide the real-time network resource management needed to support new applications to be deployed on-demand, and with the ability to choose where each service may be placed. Equally important, SDN and NFV are enhanced by cross-domain orchestration that can manage service chains across hybrid cloud and data-center (DC) architectures to deliver seamless connectivity between compute services in the enterprise and the cloud.     Contents Growing the revenue of network and cloud services, especially for business customers, is arguably among the highest priorities for network operators in general, and cable service providers in particular. Currently, such services are very often challenged by lengthy provisioning and complicated operations, which usually limit significantly the operators’ ability to fully monetize their network infrastructures, and to compete with over-the-top (OTT) providers for cloud based services. The recent, increasingly maturing SDN and NFV innovations allow service providers to improve their network monetization by improving the time-to-market, and SLAs guarantees for premium services, as well as to optimize their network utilization for volume-based service delivery. This paper outlines the main values that SDN and NFV innovations can bring
  • 3. to servic motivate As the n cloud se time ser services the tradi (Figure Network new netw Figur   SDN allo requirem enable a services applicati Of cours brings a of transi cloud or use of n leverage multiven analytics other ap capabilit architect enterpris ce provider e the fast ad new era of a ervice delive rvice deliver s such as dy itional netw 1). Two ne k Function V working era re 1: Service ows networ ments. At th applications s can be pla ions, thus e se, the com lso new ch ent network rchestration etwork, com e the SDN i ndor, virtual s, mobility, pplications. ties to man tures, thus se and the networks, e doption of S agile servic ery models ry are enha ynamic cap work service ew key tech Virtualizatio a. es innovatio rks to beco he same tim s to be depl aced anywh enhancing t mmercial be allenges in k and servi n solutions n mpute, and innovations l and physic collaboratio The enhan age “servic delivering s cloud. especially i SDN and N e creation w , new requi ancing the a pacity busin e domains o hnologies, S on (NFV) [2 on based o me much m me, NFV an loyed on-de here within the way net nefits of eff customer S ces resourc need to ens storage re s in data ce cal, infrastr on, manage nced comm ce chains” a seamless c n their bus FV in the n with virtuali irements fo already ubiq ness VPNs, of access, e Software-De ], enable se n SDN, NFV more agile a nd its real-ti emand. Wi the networ tworks are ficient, elas SLA expect ces. There sure service esources. T nter, WAN, ructure, and ed services mon orchest across hybr connectivity iness servic network arc ized IT infra or on-deman quitous clo or policy-b edge and co efined Netw ervice prov V, and cross and respon ime networ ith SDN an rk, accordin designed, o stic provisio tations, esp efore, advan e automatio This cross- , and acces d support re s, video, ge tration platf rid cloud an y between c ce offerings chitecture. astructure h nd connect ud model w based mobi ore WAN, a working (SD viders to bes s-domain o sive to serv rk resource d NFV wor ng to the ne operated, a oning of netw pecially in a ncements in on, with rap -domain orc ss (Figure 1 eal-time sec neral conte forms also a nd data-cen compute se s, which ind has prolifera tivity and re with network ility, mergin and data ce DN) [1], and st evolve to orchestratio vice manageme king in con eeds of spec and monetiz work servic an environm n conventio pid and sec chestration 1) to contro curity, ent, and ma allow NFV nter ervices in th deed ated eal- k ng enter d o this   n. ent cert, cific zed. ces ment onal cure can l any he
  • 4. This new architecture offers significant benefits for network service providers in terms of enhanced service provisioning and extending the virtualization innovations in compute and storage, to networking. More specifically, the two most immediate use-cases are:  SDN innovations combined with new network provisioning functionality, most notably those achieved through the innovations of NETCONF protocol and YANG models, can significantly advance the automation of network provisioning, and reduce the time-to-market for new services, allowing substantial operational simplification.  At the same time, substantial benefits arise from the NFV ability to create “virtual” Provider Edge (vPE) and Customer Provider Edge (vCPE) functionality which can be customized to the specific needs of each application. NFV applications can execute in a virtual environment, running over a mix of physical and virtual infrastructure components, and using service chaining (or “forwarding graphs” in the NFV terminology) to link functional blocks together to provide sophisticated service sets tailored to specific users. This is particularly important for business services. It also offers faster time-to-market for new services, and lowers infrastructure costs (both CapEx and OpEx). In this evolved service architecture, compute can take many forms, ranging from large data centers environments, to distributed compute instantiation around the network. When combined with the fast, automated service provisioning of SDN, NFV and cross- domain orchestration (Figure 1), this new architecture gives rise to very interesting monetization and optimization opportunities, allowing network service providers to leverage the network as a key service differentiation advantage, for managed and cloud services. One key such use-case is the ability for optimal placement of cloud services, which is also referred to as “demand engineering”. In this advanced network optimization scenario, a service instance is placed, or content is located, using “global” network awareness (e.g. topology, traffic, etc.) to determine optimal SLA, or network utilization [3]. Demand engineering has been reported to increase the network infrastructure utilization by around 30% in most cases [3]. Until now, slow service provisioning has demotivated most types of fast, let alone dynamic, bandwidth provisioning. Hence, off-line planning, occasionally coupled with some traffic engineering, has addressed sufficiently the traffic management needs of most IP/MPLS networks. As the deployment of cloud services proliferates and is enhanced by faster NFV and SDN provisioning, advanced network control capabilities can optimize the trade-offs between SLA performance and network utilization, and offer some new exciting use-cases for network monetization, as described later in Figure 4. Even before the implementation of such advanced network control capabilities, like traffic placement and demand engineering, SDN offers immediate substantial
  • 5. operational (OpEx) benefits for network operators. In particular, for cable operators SDN can enable improved business services workflow automation based on a unified control and operating model, common to all network elements. Cable business services can therefore converge with residential services, much more readily than today, allowing for significant OpEx reduction. In the rest of this paper, we outline the key SDN architecture and technology innovations that advance network operations, and business service offerings, and are important in the adoption of a robust SDN architecture. SDN typically refers to a network architecture vision that has been championed by the Open Networking Foundation (ONF) [1]. In this vision, data networking equipment and software can separate and abstract the application, control and data plane. The control plane resides centrally, decoupled from the forwarding components which remain distributed. The central controller(s) can enhance network operations by introducing the abilities to:  Maintain full view of the network  Program the network equipment  Provide an abstraction of the network for higher-level applications. Central to SDN evolution are the openness, network simplification, programmability, and abstraction capabilities. This ability for programmatic interaction of the control plane with applications and network elements is indeed the key innovation of the SDN architecture. In the “northbound” direction, the control plane provides a common abstracted view of the network to higher-level applications using APIs. In the “southbound” direction, the controller programs the (physical or virtual) network elements using new or existing network protocols, or APIs. Particularly in service provider environments, an evolutionary architecture needs to accommodate also the existing pre-SDN infrastructure, and hence to extend well beyond the ONF vision. Service Providers have large operational networks and significant investment in OSS/BSS infrastructure. For the SDN evolution to succeed, its adoption cannot compromise existing functionality, the current carrier-class reliability, and the support for the available standardized technologies, and multivendor systems. At the same time, it is also important to enable network differentiated quality of experience to the end-user. A new SDN hybrid control plane (Figure 2), combining the current distributed control plane components residing within network elements, with centralized controllers, offers the best SDN evolution to a network able to enhance customer experience, and allow for service abstraction and capacity optimization.   
  • 6. Figure 2 SDN d More sp consistin layer. So when dis from a c distribut offers th default ( control t and also capabilit Figure 3 protocol applicat   Key to a architect users, to • Service Pro • End User A • External IS • Augments • Control app • Elementary • Simplified • Augmente • Data plane 2: The SDN “ distributed c w pecifically, n ng of a distr ome contro stributed. O central glob ed control p he best evol (including le that optimiz o improve o ties for netw : SDN arch ls and APIs ions.   achieve bett ture that all o interact w Applica ons ovider Applica ons – OSS/BSS, O Applica ons Ps / Content Providers SDN Controller distributed control plane plica on – func on specific y Infrastructure Func ons– com Network distributed control plane d by central controllers e forwarding Controller NB APIs Device Level APIs “hybrid” co control-plan well as appli networks ar ributed con ol plane func On the othe al view of e plane with c lution towa egacy) conf zes the netw orchestratio work servic itecture for , and servic ter network lows user a with the netw Orchestra on etc mon pla orm ontrol-plane ne (left) thro ications, an re currently ntrol plane, ctions, such er hand, op end-to-end centralized rds network figuration c work perfor on and prov e differentia advanced n ce and netw k monetizat applications work and im e evolution ough the int nd network- built using with little or h as rapid I timal traffic network co intelligence k optimizati apabilities t mance for s isioning, th ation. network co work optimiz ion and opt s, operated mprove perf augments t troduction programma routing/sw r no interac IGP conver c placement onditions [4] e and a pro ion. This h to be comb specific app us offering ntrol throug zation throu timization is by service formance, e the function of centraliz atic APIs. witching plat ction with th rgence, wor t can certai ]. Combinin ogrammable ybrid appro bined with c plications, f significant gh “southb ugh “northb s a program provider, o ease mana nality of the zed control, tforms he applicatio rk indeed b inly benefit ng the e infrastruc oach allows centralized flows, or us new bound” bound” mmable, op or even end gement, or e pre- as on best cture, s sers, pen, d- r
  • 7. increase infrastructure utilization. A complete such SDN architecture shall include the following four basic building blocks (Figure 3):    SDN Controller(s): the set of software tools, and technologies that offer centralized intelligence, network abstraction (northbound), and programmatic network control (southbound).  Infrastructure: physical and virtual network elements, which in the case of the WAN can also include multiple layers; e.g. extend to optical transport [5].  Application Programming Interfaces: APIs and protocols that enable programmability at multiple levels of the SDN infrastructure. At the lowest level, device level programmatic interfaces and protocols enable SDN control of network elements. Separate, northbound APIs in the SDN architecture allow end-user applications to communicate with the controller layers.  Applications: the most important and novel aspect of SDN that enables network operators or end users to program the network through controller(s). These “top” layer software applications can utilize APIs exposed by the controller to request specific behavior from the network, or gather information about the network. These APIs enable business processes to be programmed and become part of the network operations, and should also facilitate graceful migration and integration with the existing BSS/OSS. Representational State Transfer (REST) APIs have emerged as the de-facto standard framework for the interaction between these applications and the controller layers [6]. Currently, the available, first generation, SDN controllers are application specific and typically designed to interact directly with network, each one independently. For simple network designs, such applications controllers may be acceptable. However, in large networks, and particularly in highly heterogeneous WAN, where the control functions need to interface with many devices using a multitude of protocols, such first generation designs would result in significant additional development effort, and limit scale, as network devices are touched for data retrieval and programming by many different functions. Therefore, the most scalable SDN WAN architecture could benefit from a unified single infrastructure controller that in turn enables all the different higher layer application specific controllers to interact with the network in a common framework. The unified infrastructure controller can then provide a common view of the network, gather and hold network information, provide centralized control functions, and program each network element using the appropriate device level APIs and/or network protocols. This functional separation between “application controllers” and the “infrastructure controller” allows for: 1) A unified infrastructure that provides a single point of contact to the network, both for information retrieval and programming, and 2) Each application controller to not be concerned with the precise mechanisms for interacting with the network, like the device specific API, or protocol applicable in each network element.
  • 8. Open Da Foundat SDN thr enables ODL infr network basic ne The SDN operatio NETCO “southbo include: Element its Path An impo leveragi multiven for conv protocol architect innovatio Figur There ar innovatio applicati  A pa Rout aylight (OD tion, has be rough the cr both eleme rastructure service fun etwork func N “southbo ons, and ha NF and YA ound” progr Open Flow t Protocol ( Computatio ortant value ng open so ndor networ verged mult details from ture mature ons of each e 4: Examp re multiple ons describ ions are as rticular netw ting innovat DL), an indu een formed reation of a entary infra platform co nctions, and tions for en und” APIs a ve also offe ANG may be rammatic A w, the exten PCEP) to a on Clients ( of these S ource imple rks. Even m ivendor net m the netw es, the netw h protocol, ple of an SD SDN contro bed above, sociated ei work techn tions that le ustry-wide, o with the go a common m astructure fu onsists of m d also a Se nd-user app and protoco ered signific e the most APIs. Other nsions of the allow for sta (PCC), and DN protoco mentations more impor twork progr ork users. work applica become the N applicatio oller applica to advance ther with: ology, like f everage SD open sourc oal of furthe multivendor unctions an many southb ervice Abstr plications. ols are impo cant innova notable pro r notable “s e IETF stan ate-aware p the link-sta ols is that th s - standard rtant, a sop rammability Therefore, ations, rath e important   on for netw ations that e the WAN for example DN with sou ce, project o ering the ad r controller nd controlle bound APIs raction Laye ortant in en ations. As a otocol innov southbound ndard for th provisioning ate extensio hey are typ ds that allow histicated S y that essen as the SD her than the t focus. work moneti can leverag service del e the recen urce routing operating u doption and platform [7 r applicatio s and “plug er (SAL) tha nabling imp already me vation exam d” innovation he Path Com g, and activ ons for BG ically open w for hetero SDN infrast ntially “abst N evolution e specific de zation and ge the SDN livery. Typ nt, importan g to simplify nder the Li d innovation 7]. ODL ons [7]. The -ins”, basic at abstracts proved netw entioned, mple of n examples mputation e operation P (BGP-LS - often ogeneous, tructure allo tracts away n of the WA etails and optimizatio N infrastruct ically, these nt Segment y network an nux n of e c s the work s n on S). ows y” the AN   on.   ture e nd
  • 9. service engineering by removing most complex state from the distributed control- plane [8],  Workflow automation of services or network functions like analytics, policy, optimization, or orchestration [9]. Figure 4 describes the basic implementation of a significant such SDN optimization application specifically for services with well-defined profiles, which include most business services. For such “controllable” services, when the provider does not need to guarantee the exact timing of delivery, e.g. asynchronous bulk data transfers, an intelligent WAN SDN controller can time shift these services away from times of high next utilization (“peaks”) to times of otherwise low network utilization (“valleys”). Alternatively, for services that are controllable but with timing well-defined and inflexible scheduling (e.g. synchronous business data backups), an SDN WAN controller application can instead leverage network information (gathered potentially real-time) on utilization, or failures, or other performance attributes, to identify the optimal routing for this traffic given its specific SLA requirements. The same unified SDN controller then can potentially also program the required LSPs in the network, perhaps by using PCEP as the southbound protocol. A very good example of an actual WAN deployment that leverages such an intelligent SDN implementation to optimize the network delivery of controllable services has been extensively analyzed in [10]. As mentioned in the beginning of this paper, a sophisticated SDN infrastructure enables a network vision where user-defined applications allow optimal placement of each new service instance according to user-defined SLA or network utilization constraints, based on advanced network optimization that leverages “global” network awareness of topology, traffic, or location of the required content, compute, or storage resources, as for example described in [3]. Until now, slow service provisioning has allowed off-line planning, occasionally coupled with traffic engineering, to address sufficiently the traffic management needs of WAN networks. As cloud services deployment proliferates, faster NFV and SDN service provisioning can be significantly enhanced by advanced network control capabilities that optimize the trade-offs between SLA performance and network utilization, allowing for better network monetization. This programmability becomes important for the overall evolution of WAN architectures to the network cloud era of cable and telecom operators [11].     In summary, this paper outlines the main benefits SDN and NFV can bring to network service delivery, especially for business services. Most notably, SDN and NFV enhancements to the already ubiquitous cloud model can add new functionality, and ensure customer loyalty for applications such as dynamic business VPNs, or policy- based service delivery, at the edge of the network. They also remove many of the legacy constraints among the access, WAN, and the data center, and enable more advanced demand engineering, and capacity optimization at the core. An evolutionary approach to the adoption of SDN is being proposed, based on a “hybrid” control plane
  • 10. architecture that combines the current distributed control-plane routing infrastructure, with a unified SDN “controller” platform that provides new significant network visibility and programmability. The SDN controller capabilities are enhanced by innovations in network protocols, APIs, and most notably new user-defined applications. The SDN evolution is complemented by the NFV capabilities. NFV services provide the real-time network resource management needed to support new applications, deployed on- demand, and with the ability to choose where each service may be placed. Equally important, SDN and NFV are enhanced by common platforms for orchestration that can manage service chains across hybrid cloud and data-center architectures to help deliver seamless connectivity between compute services in the enterprise and the cloud. These increasingly maturing SDN and NFV innovations offer an important opportunity for service providers to better monetize their networks, by improving the time-to-market, and SLAs guarantees for premium services, as well as the network utilization of volume- based service delivery.     Bibliography The authors would like to acknowledge many insightful discussions with colleagues at Cox and Cisco, including Jeff Finkelstein, Simon Spraggs, and Alon Bernstein. 1. https://www.opennetworking.org/sdn-resources/sdn-library/whitepapers 2. http://portal.etsi.org/home.aspx 3. J. Evans, et al “SDN-based traffic management…”, MPLS World Congress 2014 4. M. Horneffer, “IGP Tuning in an MPLS Network”, NANOG 33, February 2005 5. M. Khaddam, et al, Multilayer Network Optimization, invited paper IEEE OFC 2015 6. http://en.wikipedia.org/wiki/Representational_state_transfer 7. http://www.opendaylight.org/project/technical-overview 8. http://tools.ietf.org/html/draft-martin-spring-segment-routing-ipv6-use-cases-00 9. D. Ward, “Simplifying the WAN...”, Plenary (d1-08), MPLS World Congress 2014 10. http://cseweb.ucsd.edu/~vahdat/papers/b4-sigcomm13.pdf 11.L. Paraschis “Advancements in Network Architectures…”, pp. 793–817 in Op. Fib. Telecom. VI B, Elsevier 2013. (ISBN 978-0123969606)