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Author Archive for: ‘admin’

OpenFlow: Proactive vs Reactive Flows

Bad Decision1

As more people begin entering the Software Defined Networking conversation, there is still only one wire protocol that has a reasonably good chance at becoming the de-facto open SDN southbound messaging standard, OpenFlow. There is quite a bit of debate around whether or not OpenFlow can scale. Most claims that OpenFlow does not scale are probably grounded in misconception. That …

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SDN OpenFlow Policy Abstractions

Flow Factory4

SDN OpenFlow Policy Abstractions : Abstraction layers are a fundamental principle in computer science. It is a core pillar in creating efficiencies through layered, modular scale. Proper abstraction layers are also where the networking train came off the tracks. Network operators program network devices using proprietary APIs one device at a time. In today’s networks, when we push policy to …

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Plexxi Capacity Planning Done Right

optical

I try and get a daily dose of at least a few minutes of a PacketPushers podcast to keep up with latest networking products and trends. In Show 126 Plexxi & Affinity Networking With Marten Terpstra Greg and Ethan meet with Marten Terpstra of Plexxi and dug into the new GA product offering from Plexxi. Plexxi defines “affinitized traffic” as traffic …

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Best Cat Videos of 2012

Best Cat Videos 2012

took a rare, but important intermission from technology related posts to write about the one and only thing cooler than computing, programming and networking, that is videos of cute cats and kittens! These are the best cat videos of 2012 that I remember watching this year. Pets love us unconditionally that can only come from pure innocence. As they depend …

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Google Data Center Pictures: Year in Review

Google Data Center Building

Google Data Center Pictures: Year in Review :In 2012 Google opened the doors up to some of it’s data centers in the typical colorful fashion we expect from Google. Hyper-scale content and cloud providers are ultra secretive about their trade secrets. Facebook’s Opencompute project is probably the most notable transparent architectures with regard to how they build their compute and …

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Floodlight OpenFlow Controller: Using the Static Flow Entry Pusher

Openflow Programming Header Sm

Floodlight OpenFlow Controller: Using the Static Flow Entry Pusher: The first post in this tutorial can be found at Tutorial to Build a FloodLight SDN OpenFlow Controller . For those looking to do things with early SDN / OpenFlow controllers this post may be of some use to kickstart your efforts. I am posting a Java class below that Cory Fowler …

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Cacti Network Management Installation Tutorial

Cacti Nms

Network management has to be, one of the most neglected pieces of networking. I am sure we all have our hypotheses as to why but that is for another day. This tutorial is for installing the latest stable release 0.8.8a, released on 04/29/12. I needed to proof Cacti and get a scripted installation together. Cacti has been around a long …

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Programming the NSP: Vendors on SDN for SP Operators

Nsp World Sdn

ast week we looked at what the Network Service Provider Customers are looking for from vendors in the  Network Virtualization Function (NFV). This week, let’s take a look at what the vendors were proposing in October at the SDN & OpenFlow World Congress. Some of the vendor and ONF white papers were posted recently which is nice to see. The …

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