Take the promise of NFV one step further.
The Packet Pushers discuss network virtualization, automation, and scaling up data centers with our sponsor, Juniper Networks. Our guests are Parantap Lahiri, Sr. Director, Solutions Engineering and Damien Garros, Technical Marketing Engineer at Juniper Networks.
The post Show 243 – Network Virtualization with Juniper QFX & Contrail – Sponsored appeared first on Packet Pushers.
Has Docker won the standards wars?
I have been on the road a lot lately meeting with customers, prospects, partners and investors and it has become clear to me that there is a very simple, but profound trend emerging in Information Technology. Today you hear a lot about Third Platform, Bimodal IT, Hyperconvergence and Software Defined ”X” (Networking, Storage, Data Center etc.). The discussions about these technologies are prevalent, but the question is why? Why these topics and why now? Why should we care about Third Platform, Bimodal IT, Hyperconvergence and SD”X”? The answer is simple; storage and compute have evolved to be highly dynamic, and the network itself now needs to keep pace.
Looking Back
Over the last 2 decades, data center architectures have traditionally been highly static from the perspective of both the application and the network. Designing a data center was a lengthy process of capacity planning and design, after which the network team built a data center network around physically redundant two-tier leaf/spine architectures. Depending on pre-planned growth models and expected product lifecycles, multiple chassis were typically used as the spine. Leaf switches, dual homed back to the spine, were Continue reading
Bad Network Design – Availability of a system is mainly measured with two parameters. Mean time between failure (MTBF) and Mean time to repair (MTTR) MTBF is calculated as average time between failures of a system. MTTR is the average time required to repair a failed component (Link, node, device in networking terms) Operator mistakes […]
The post Bad Network Design appeared first on Network Design and Architecture.
I’ve been much amused byBi-Modal IT that Gartner coughed up a few months back. Bimodal IT refers to having two modes of IT, each designed to develop and deliver information- and technology-intensive services in its own way. Mode 1 is traditional, emphasizing scalability, efficiency, safety and accuracy. Mode 2 is nonsequential, emphasizing agility and speed. […]
The post Bi-Modal IT Bemusement – I Call It Project-Driven IT appeared first on EtherealMind.
Writing OpenFlow controllers that interact with physical hardware is harder than most people think. Apart from developing a distributed system (which is hard in itself), you have to deal with limitations of hardware forwarding pipelines, differences in forwarding hardware, imprecise abstractions (most vendors still support single OpenFlow table per switch), and resulting bloated flow tables.
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