有哪些信誉好的足球投注网站Heavy Reading 20140522_The Future of Telco Data Center Networking in the SDN Era英文学习资料.pdfVIP
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The Future of Telco Data Center Networking in the
SDN Era
EXECUTIVE SUMMARY
Data centers are becoming a more strategic asset for telecom operators, with many currently in the midst
of, or planning, major transformations. Whereas they were once used primarily to support internal functions,
today data centers are used to deliver end-user applications, including content and video. More importantly,
cloud-based services such as infrastructure as a service (IaaS) and software as a service (SaaS) are facing
an increasingly competitive market. Network functions virtualization (NFV) is another major driver of change
in the telco data center.
To support these new services more efficiently and cost-effectively, telcos are looking to software-defined
networking (SDN) architectures. SDN represents a new paradigm in networking – one that is creating an
opportunity for new suppliers. Open, standards-based platforms threaten to disrupt the business of estab-
lished suppliers, which have historically offered proprietary solutions. These suppliers are looking to defend
their turf while also demonstrating a commitment to openness.
Opex savings is the main driver behind the move toward SDN, as opposed to the capex savings that generic
x86 platforms will provide. SDN architectures offer the promise of more automation, simplifying service
creation and delivery. The ability to use Linux-based tools would enable telcos to use a single management
system across the compute, network and storage domains. This is how the hyper-scale cloud providers
such as Google and Amazon operate today, and telcos need to be able to match them from a cost per-
spective to remain competitive. Virtualization – which is not a requirement of SDN, but is often planned in
conjunction with SDN transformation – will give telcos the ability to use resources more efficiently.
SDN is but one of the use cases that is supported by existing and emerging data center networking solutions.
Leaf/spine a
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