Tag Archives: sdn

Optical SDN Gets a Test Run

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Building an OTS boils down to adding two things to an optical transport box: a virtual switch and the software hooks to receive commands from OpenFlow or some similar protocol. Infinera outfitted its gear accordingly, and ESnet provided a home-built SDN controller to talk to it.

via Optical SDN Gets a Test Run – Optical Networking – Telecom News Analysis – Light Reading.

The OTS used in the tests is nowhere near commercial viability, both sides tell Light Reading. The software doesn’t have operational niceties such as alarms or debugging tools, for instance.

OTS=Optical Transport Switch

Alcatel-Lucent Takes SDN to the Enterprise

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AlcaLu wants to see policy infused into SDN early on. Ideally, the network would tap a user profile — or a virtual machine’s profile — to help it make on-the-fly decisions about what to do with traffic coming from (or being sent to) a virtualized application.

via Alcatel-Lucent Takes SDN to the Enterprise – IP & Convergence – Telecom News Analysis – Light Reading Service Provider IT.

Big Switch Girds for SDN Battle

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As expected, the company is promoting a network architecture that uses OpenFlow to program Ethernet switches. As has been fashionable in SDN circles lately, Big Switch is also espousing the idea of a hybrid network — one where OpenFlow-enabled gear is installed next to traditional routers and switches.

via Big Switch Girds for SDN Battle – Telecom News Analysis – Light Reading Service Provider IT.

Service providers would prefer to see the northbound and southbound interfaces be open, Griliches says. That’s because a groundswell of applications is expected to emerge now that SDN has become a hot and venture-fundable area, and no carrier wants to suddenly find out its applications don’t work on a particular vendor’s gear.

Tier 1 Carriers Tackle Telco SDN

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That approach tallies with the new network vision laid out by Michel’s colleague, Axel Clauberg, DT’s vice president of IP Architecture and Design, earlier this year. That vision sees SDN protocols being deployed in data centers and access networks but not in telecom operator core networks. (See DT Unveils New Network Vision.)

via Light Reading Service Provider IT – IP & Convergence – Tier 1 Carriers Tackle Telco SDN – Telecom News Analysis.

Open Networking Foundation

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The Open Networking Foundation (ONF) is a non-profit consortium dedicated to the transformation of networking through the development and standardization of a unique architecture called Software-Defined Networking (SDN), which brings direct software programmability to networks worldwide. The mission of the Foundation is to commercialize and promote SDN and the underlying technologies as a disruptive approach to networking that will change how virtually every company with a network operates.

via Open Networking Foundation

Intro to OpenFlow

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In a classical router or switch, the fast packet forwarding (data path) and the high level routing decisions (control path) occur on the same device. An OpenFlow Switch separates these two functions. The data path portion still resides on the switch, while high-level routing decisions are moved to a separate controller, typically a standard server. The OpenFlow Switch and Controller communicate via the OpenFlow protocol, which defines messages, such as packet-received, send-packet-out, modify-forwarding-table, and get-stats.

via Intro to OpenFlow.

OpenFlow allows you to easily deploy innovative routing and switching protocols in your network. It is used for applications such as virtual machine mobility, high-security networks and next generation ip based mobile networks.