Blog Archives

TCP BBR Congestion Control on Mininet

In this post, I demonstrate some benefits of using BBR congestion control and illustrate how easy it is to adopt it by using Mininet as an example. I’m excited to share this post with you guys because it’s been a

Posted in Innovation in Academia, Lab Projects, Mininet

ESPRESSO – More insights into Google’s SDN

Google recently released a paper detailing how it has designed and deployed ESPRESSO: the SDN at the edge of its network. The paper was published at SIGCOMM’17. In the past, Google’s SDN papers have been very insightful and inspiring, so

Posted in Innovation in Academia, SDN

Is vendor lock-in really a big deal?

I’ve recently come across a Datanauts podcast regarding ““Choosing Your Next Infrastructure” ( if you like podcasts, I HIGHLY recommend Packet Pushers, I’m a fan because of their diverse and unbiased content). In this episode, various great considerations on choosing new infrastructure are

Posted in Thoughts & theories

Network Disaggregation – The holy grail?

Tl;DR: Yes The networking industry has seen more innovation in the last decade than in the last 30 years. The popularization of the SDN concept and the release of OpenFlow 1.0 pretty much ignited a flame present in every operator’s mind:

Posted in SDN, Thoughts & theories

Has OpenFlow failed? – Challenges and implementations

In truth, very few vendors have successfully implemented full capabilities of OpenFlow. OpenFlow provides way too much flexibility to programmers. It’s hard to make the hardware couple with that much power. A few vendors are able to deliver programmable ASICs

Posted in SDN, Thoughts & theories

Visualizing Sflow data with Ntop and Nprobe on Ubuntu 16.04

Open Source tools can be useful if you need to put something together easily. I was able to use Nprobe to visualize real time traffic observed via Sflow. Here is how you install it on Ubuntu 16.04. wget http://apt.ntop.org/16.04/all/apt-ntop.deb dpkg

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Posted in Lab Projects, Tutorials, Ubuntu

Network Automation vs Software Defined Network – Ansible vs Openflow

At Verizon, we are moving towards automating network configuration and provisioning. To me the goals for this move can be summarized as: Maintenance cost reduction More agile deployment processes Coming from an OpenFlow SDN background, where changes to the network

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Posted in Perspectives, Thoughts & theories
Network Heresy

Tales of the network reformation

How to Do Great Research

Grad school survival advice from Nick Feamster and Alex Gray

n40lab

A blog about cloud, virtualization, sdn and centos