Email Alerts
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Guide: Vendors take alternatives to OpenFlow SDN
SDN can be implemented with a centralized controller or distributed architecture. In choosing SDN technologies, is a complete overhaul necessary? guide
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Software defined networking for the private cloud network bottleneck?
Manual networks stifle the otherwise automated private cloud. Can software defined networking and network virtualization solve the problem? Feature
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IBM DOVE: Big Blue enters the network virtualization battleground
Look out Nicira and Big Switch, IBM is developing a network virtualization strategy that relies on its own virtual network overlay technology. Feature
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The application tier of a software-defined networking architecture
In a software-defined networking architecture, controller-based OpenFlow applications could deliver highly scalable, efficient and manageable network services. Feature
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SDN blog roundup: Cisco on SDN as Bigfoot, plus OpenFlow and Wireshark
In this week's SDN blog roundup, bloggers discuss Cisco's SDN Bigfoot analogy, OpenFlow and Wireshark, and whether SDN is an industry con. News | 22 May 2013
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Overheard on Twitter: SDN standards; SDN vs. network virtualization
SearchSDN explored Twitter and saw users discussing vendor opportunities surrounding SDN, as well as SDN standards and SDN vs. network virtualization. News | 21 May 2013
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SDN Tweetup May 17: Will SDN applications ever generate cash?
During our Tweetup May 17 at 12 p.m. EDT we'll discuss whether SDN applications should be generating or accelerating revenue. Hashtag #SDNchat. News | 16 May 2013
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Interop reporter's notebook: SDN vendors talk OpenFlow, hybrid SDN
We spoke with five vendors at Interop who share their approach to and definition of SDN as it relates to OpenFlow, hypervisor and legacy views. Opinion | 16 May 2013
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Overheard on Twitter: At Interop, users still seeking SDN definition
SearchSDN was live at Interop, where analysts and IT professionals took to Twitter to discuss SDN definitions, inhibitors and value propositions. News | 14 May 2013
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OpenFlow scalability: Q&A with Nick McKeown
Nick McKeown, OpenFlow and SDN icon, talks about OpenFlow scalability and the state of OpenFlow switching. Q&A | 09 May 2013
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SDN vs. network virtualization: Q&A with VMware's Martin Casado
VMware's Martin Casado discusses the definition of SDN as it relates to network virtualization, and what to expect at this year's Interop conference. News | 06 May 2013
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SDN blog roundup: SDN market growth; overlay vs. switch-based models
In this week's SDN blog roundup, bloggers discuss SDN market growth, enterprise adoption and overlay vs. switch-based models. News | 02 May 2013
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HP supports OpenFlow 1.3 on new data center switches
HP's new data center switches support OpenFlow 1.3, making it the only vendor to run the latest SDN protocol from the core to the server edge. News | 01 May 2013
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Overheard on Twitter: SDN network provisioning, bandwidth calendaring
This week, SearchSDN hosted its first tweetup and discussed ONS 2013 topics like network provisioning, bandwidth calendaring and SDN use cases. News | 30 Apr 2013
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How network functions virtualization will revolutionize architecture
Using NFV, engineers can virtualize devices and services in large networks to make their architectures cost efficient and flexible. Tip
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OpenFlow configuration protocols: Understanding OF-Config and OVSDB
OpenFlow directs network packet flows, but OpenFlow configuration protocols, OF-Config and OVSDB, form relationships between controllers and switches. Expert Tip
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How data center network fabric and SDN intersect
SDN and data center network fabrics both enable converged networking and the ability to manage many switches as one. Where do the two intersect? Tip
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Centralized vs. decentralized SDN architecture: Which works for you?
Two SDN architecture models -- centralized and decentralized -- have much in common, but key differences center on the use of the OpenFlow protocol. Tip
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SDN technologies primer: Revolution or evolution in architecture?
SDN can be implemented with a centralized controller or distributed architecture. In choosing SDN technologies, is a complete overhaul necessary? Tip
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Network functions virtualization primer: Software devices take over
With network functions virtualization (NFV), engineers replace network devices with software on basic servers for flexibility and cost reduction. Tip
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Software-defined networking with open APIs will mean real integration
The answer to cloud networking is more than software-defined networking; it's network-centric software with open APIs that could result in deeper network systems integration. Tip
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Why software-defined networking is becoming a reality
Software-defined networking isn't a new concept, but it's newly able to evolve due to fast processing speeds. Will that mean a future for network application development? Tip
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Why do I need SDN technology?
SDN is valuable, but uses extend to other parts of the network for increased network flexibility, dynamic traffic flow, decreased latency and QoS. Answer
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Specialized SDN controllers: Are they necessary?
An SDN controller, with or without OpenFlow, is not required for a software-defined network, and SDN architecture vendors take different approaches. Answer
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Is SDN a centralized or distributed network architecture?
A software-defined network can have a centralized or distributed network architecture in the data center, LAN and WAN, depending on business needs. Answer
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What is the difference between an overlay network and SDN?
A software-defined network can be deployed as overlay networks to a physical network or natively as the primary network to improve flexibility. Answer
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Does software-defined networking require special SDN switches?
Software-defined networks do not require special SDN switches; instead, vendors offer a variety of SDN controllers, network fabrics and hardware. Answer
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Where do network fabric and SDN technologies intersect?
Networks can use a network fabric and SDN technologies together, and vendors' SDN architectures integrate them in a variety different ways. Answer
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Why you need a hybrid network while migrating to SDN
While migrating to software-defined networking, hybrid SDN and traditional networks must support both physical and virtual switching environments. Answer
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Do I need to use an SDN controller for software-defined networking?
An SDN controller, with or without OpenFlow, is not required for a software-defined network, and SDN architecture vendors take different approaches. Ask the Expert
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NETCONF
NETCONF is an IETF network management protocol that provides an administrator or network engineer with a secure way to configure a firewall, router, switch or other network device. Definition
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network fabric
Network fabric is an industry term that describes a network topology in which devices pass data to each other through interconnecting switches. Definition
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hybrid SDN
A hybrid SDN (software-defined network) is a network where both traditional networking and SDN protocols operate in the same environment. Definition
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data plane (DP)
The data plane (sometimes known as the user plane, forwarding plane, carrier plane or bearer plane) is the part of a network that carries user traffic. Definition
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Software-defined network technology interest now, future investment
Survey trends reveal IT professionals have interest in software-defined network technology but are not ready to bring the technology to primetime. Slideshow
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SDN blog roundup: Cisco on SDN as Bigfoot, plus OpenFlow and Wireshark
In this week's SDN blog roundup, bloggers discuss Cisco's SDN Bigfoot analogy, OpenFlow and Wireshark, and whether SDN is an industry con. News
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How network functions virtualization will revolutionize architecture
Using NFV, engineers can virtualize devices and services in large networks to make their architectures cost efficient and flexible. Tip
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Overheard on Twitter: SDN standards; SDN vs. network virtualization
SearchSDN explored Twitter and saw users discussing vendor opportunities surrounding SDN, as well as SDN standards and SDN vs. network virtualization. News
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SDN Tweetup May 17: Will SDN applications ever generate cash?
During our Tweetup May 17 at 12 p.m. EDT we'll discuss whether SDN applications should be generating or accelerating revenue. Hashtag #SDNchat. News
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Interop reporter's notebook: SDN vendors talk OpenFlow, hybrid SDN
We spoke with five vendors at Interop who share their approach to and definition of SDN as it relates to OpenFlow, hypervisor and legacy views. Opinion
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Overheard on Twitter: At Interop, users still seeking SDN definition
SearchSDN was live at Interop, where analysts and IT professionals took to Twitter to discuss SDN definitions, inhibitors and value propositions. News
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OpenFlow scalability: Q&A with Nick McKeown
Nick McKeown, OpenFlow and SDN icon, talks about OpenFlow scalability and the state of OpenFlow switching. Q&A
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SDN vs. network virtualization: Q&A with VMware's Martin Casado
VMware's Martin Casado discusses the definition of SDN as it relates to network virtualization, and what to expect at this year's Interop conference. News
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SDN blog roundup: SDN market growth; overlay vs. switch-based models
In this week's SDN blog roundup, bloggers discuss SDN market growth, enterprise adoption and overlay vs. switch-based models. News
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HP supports OpenFlow 1.3 on new data center switches
HP's new data center switches support OpenFlow 1.3, making it the only vendor to run the latest SDN protocol from the core to the server edge. News
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About Network hardware and SDN
In SDN, networks are controlled by software, but they still require basic hardware. In this section, learn about how SDN switches and SDN routers will play a key role in SDN architecture. Also learn about the emergence of OpenFlow switches and the use of commodity hardware in SDN.