How To Select The Right Network Function Virtualization -Books Download

How to Select the Right Network Function Virtualization

2020 | 3 views | 9 Pages | 1.72 MB

As the industry hits the hype cycle slope of enlightenment, observers are now able to ascertain the best practice approach in NFV system design and operations. NFV is also seen as fundamental for emerging architectural shifts including 5G core, multiaccess edge computing (MEC), and cloud-native functions. Best practice for NFV platforms Like all new technologies, over time NFV has gone through ...



White paper
Cisco Public
Contents Why selecting the right platform matters
Why selecting the right platform Network operators use several deployment frameworks and architectures
matters The options vary across single vendor vertical stacks horizontal
disaggregated do it yourself DIY stacks and horizontal modular platforms
Best practice for NFV platforms with multi tenanted virtual network functions VNFs Among these three
The Cisco NFVI solution approaches operators today tend to choose a platform that is open and
modular with the optimal balance of open multi function scaling carrier
Comparing the TCO of NFVI grade operational packaging and a single point of ownership
platform approaches
Deploying the right NFV platform approach for a given set of virtual network
Comparing the TCO impacts of functions can have a significant impact on streamlining operational expenses
VNF validation approaches
For telecommunication service providers SPs the promise of NFV has
Deploying NFV solutions traditionally been about lowering network total cost of ownership TCO It
offers automation and simplification of network operation while improving
Learn more
service agility However like all new technologies over time the hype of
expectation subsides challenges are overcome and the true benefits are
Figure 1 NFV hype cycle so far
2019 Cisco and or its affiliates All rights reserved
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Cisco Public
Today after several years of real world implementation
NFV has become mainstream for new service provider
Best practice for NFV platforms
functions It s mainly used for mobile core and virtual Like all new technologies over time NFV has gone
network services with cloud based management with through a hype of expectation faced realities about real
deployments globally in mainly central and regional world deployment challenges and is now maturing to
telco data centers For instance Cisco has deployed best practices where the true benefits are revealed
virtual packet core VPC virtualized managed services
Figure 2 shows several approaches to implementing
and virtualized infrastructure services in more than 100
an NFV platform stack Cisco products are listed as
networks over the past three years
examples for each layer but the same principles apply
As the industry hits the hype cycle slope of for other products as well
enlightenment observers are now able to ascertain
Over time it appears that the vertical approach using
the best practice approach in NFV system design
fixed configuration isn t capital efficient for some service
and operations NFV is also seen as fundamental
providers because of a limited economy of scale and
for emerging architectural shifts including 5G core
the potential for underutilized capacity assets Whereas
multiaccess edge computing MEC and cloud native
the DIY approach promises horizontal scaling the
Figure 2 NFV platform stack approaches
2019 Cisco and or its affiliates All rights reserved
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Cisco Public
complexities of integration and operations creates the platform is packaged in modules for lifecycle
prohibitive additional costs This struggle is one only management and open to supporting a wider variety of
large service providers are equipped to navigate For VNFs for horizontal scaling and breadth of functionality
most service providers the most efficient approach is Figure 3 shows how the operational implications of these
likely to be somewhere between the extremes where approaches translate into operational cost OpEx
Figure 3 Operational implications of different NFV platform stack approaches
The Cisco NFVI solution
The Cisco NFV Infrastructure solution uses Open Source performance It also offers carrier grade high availability
hardware and software components coupled with an automated day 0 deployment and smart day 1 2
integrated and certified design for high throughput and operation tools
Figure 4 Scope of Cisco NFVI Solution with Preintegrated and validated system
2019 Cisco and or its affiliates All rights reserved
White paper
Cisco Public
The Cisco NFVI Infrastructure helps telco operators Faster service delivery and time to market
and service providers achieve better TCO while Modular design for rapid and efficient deployment
simplifying service delivery and reducing cost with high
performance lifecycle management Some of the key Integrated validated and certified design
attributes and value of Cisco NFVI Solution include reduces deployment from month to weeks
Hardware and software upgrades
Optimized architecture made modular and simpler
Specialized for virtualized service delivery General multivendor and opensource NFV
Designed to support NFV evolution
optimized investment Comparing the TCO of NFVI
Integrated solution that avoids risks and cost platform approaches
Scale to support edge architecture with Cisco has worked with ACG Business Analytics to
centralized storage and management quantify the OpEx savings that can be expected by
Network data center SDN that supports bare choosing the right NFVI approach for a given network
metal OpenStack and Kubernetes function requirement
Simplified operations Many operators deploy siloed NFVI and virtualized
infrastructure manager VIM architecture for specific
Fully instrumental for carrier class operations
network solutions provided by a single vendor for quick
Simple automated installation inclusive of way to deploy NFV This approach uses dedicated
hardware and OpenStack services infrastructure orchestration and management tools
Designed for reliable upgrade with telemetry which lead to higher CapEx and OpEx as more VNFs are
and visibility to identify hot spots added
Simplified E2E operation and complexity of virtualization
Figure 5 Study of OpEx impacts of siloed vertical vs DIY horizontal NFVI platforms
2019 Cisco and or its affiliates All rights reserved
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Cisco Public
For example when compared to building four separate Consistent configuration management
vertical platforms to support different mobile core audit management and security
functions building one horizontal platform results in a 14 policy across four use cases
percent improvement in OpEx over a three year period Centralized OpenStack and software upgrades
Note there are other benefits such as faster time to
revenue from faster time to market and reduced CapEx Reduce the amount of time for
from procurement efficiency which weren t modeled in engineering and planning design
this study Telco and service providers may choose the DIY option
if they have existing proficient software and system
With vertical single function stacks the operator has engineering teams that are able to scale and support
four different siloed stacks compared to a horizontal OpenStack This support includes operations network
NFVI The operator can enjoy the reuse of the common engineering and software development Having said
building blocks which results in better operational that some of the issues and challenges of maintaining
benefits including DIY stack architecture stack include
Less integration and operation effort and Regression testing of OpenStack version
expense without redundancy in operational and infrastructure hardware and VNFs
integration work including operations support
system business support system integration Overall solution support that requires integration with
multiple vendors with complex troubleshooting
Increased network flexibility and simplicity
with end to end service and network OpenStack software and hardware installations
stitching within the telco data center that are siloed without validation check
Centralized data center DC SDN integration with Siloed monitoring tools for OpenStack
multi pod VIM layer and network operation hardware and VM instances
Non integrated security patching and hardening
Manual network integration with OpenStack services
2019 Cisco and or its affiliates All rights reserved
White paper
Cisco Public
Figure 6 shows that with Cisco Modular NFVI operators Improved VNF and hardware onboarding
gain benefits and efficiencies that include process and complexity
Integrated monitoring tools of Centralized configuration management
OpenStack and infrastructure Automated network underlay and
Improved security patches for overlay with Cisco SDN
OpenStack and Linux vulnerability Miscellaneous expenses such as services
Automated software upgrades assurance software licenses testing
development and benchmarking are reduced
Figure 6 Study of the OpEx impacts of DIY horizontal vs Cisco Open Modular NFVI platforms
2019 Cisco and or its affiliates All rights reserved
White paper
Cisco Public
Comparing the TCO impacts of VNF validation approaches
In the second part of our TCO study with ACG Business The results of the model showed significant work force
Analytics we modeled a virtual mobile packet core efficiencies when deploying and managing pre validated
deployment through a four year period with network VNFs Although it was not modeled in this study we
growth The NFVI platform was the Cisco open modular project even more significant business benefits because
NFVI In the first scenario VNFs taken by the operator of the faster time to attain new capacity or services
that were not pre validated We compare this scenario deployed
to pre validated VNFs either Cisco VNFs or from third
Figure 7 Breakdown of OpEx savings with Cisco Modular NFVI
2019 Cisco and or its affiliates All rights reserved
White paper
Cisco Public
Learn more In this case the operational efficiencies come from
To learn more about Cisco NFVI Prevalidated performance and hardware optimization
visit www cisco com go nfvi Materials processes and automation for lifecycle management
and to see edge computing Simplified security management with hardened configurations
applications visit
www cisco com go edge Global support for fault management and root cause analysis RCA
Figure 8 Study of OpEx impacts of VNFs pre validated on Modular NFVI platforms
Deploying NFV solutions
Service providers are starting to deploy NFV solutions that promise to
improve business agility and increase service revenue To ensure the success
of these deployments it is essential that NFV applications run on a solid NFV
infrastructure that includes a flexible modular approach that can support
scale and functionality needs The Cisco NFV Infrastructure provides Cisco
integrated tested and certified solutions to run NFV network services The
primary benefits of the Cisco NFV Infrastructure are
Cisco packaged tested and certified
High performance and scalability
or its affiliates All rights reserved Cisco and the Cisco logo
egistered trademarks of Cisco and or its affiliates in the U S
To view a list of Cisco trademarks go to this URL www
High availability architecture
marks Third party trademarks mentioned are the property
owners The use of the word partner does not imply a Centralized single interface management
ship between Cisco and any other company 1110R
Automated OpenStack and hardware installation
Built in network cloud security
Lower TCO than alternatives
2019 Cisco and or its affiliates All rights reserved Faster time to NFV based network services
Cisco and the Cisco logo are trademarks or registered
trademarks of Cisco and or its affiliates in the U S and
other countries To view a list of Cisco trademarks go
to this URL www cisco com go trademarks Third
party trademarks mentioned are the property of their
respective owners The use of the word partner does
not imply a partnership relationship between Cisco and
any other company 1110R


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