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I got an interesting question from one of my readers:
If every device talking to a centralized control plane uses an out-of-band channel to talk to the OpenFlow controller, isn’t this a scaling concern?
A year or so ago I would have said NO (arguing that the $0.02 CPU found in most networking devices is too slow to overload a controller or reasonably-fast control-plane network).
Read more ...In this screencast, I go on a rant about why long-distance vMotion is a dumpster fire. Seriously, don’t do it.
A large portion of the OpenStack community is gathered in Austin this week for the Spring 2016 OpenStack Summit. As I’ve done at previous Summits (and other events), I’m offering to gather with other Christian believers for a brief time of prayer in the mornings before the sessions kick off each day.
Normally I get these arranged much earlier, so I apologize for not getting this out there sooner. That being said, if you’re a Christian and interested in gathering for a brief time of prayer, we will be meeting outside the Austin Convention Center at 8:30 am. We’ll meet along East 4th Street, on the convention center side of the Downtown Station.
Anyone is welcome to join us, but please note that this will be a distinctly Christian-focused and Christ-centered event.
You don’t need to RSVP or let me know you’ll be there; just feel free to stop by. I hope to see you there!
Here are the top stories SDxCentral wrangled this week related to SDN, NFV, cloud, and virtualization infrastructure: Verizon Publishes an SDN/NFV Reference Architecture — We can’t let AT&T have all the fun. On the heels of Ma Bell’s Ecomp specification, Verizon lays down some SDN/NFV knowledge of its own. A bit of Friday fun from the NFV World Congress. How... Read more →
Mininet-WiFi is a fork of the Mininet SDN network emulator. The Mininet-WiFi developers extended the functionality of Mininet by adding virtualized WiFi stations and access points based on the standard Linux wireless drivers and the 80211_hwsim wireless simulation driver. They also added classes to support the addition of these wireless devices in a Mininet network scenario and to emulate the attributes of a mobile station such as position and movement relative to the access points.
The Mininet-WiFi extended the base Mininet code by adding or modifying classes and scripts. So, Mininet-WiFi adds new functionality and still supports all the normal SDN emulation capabilities of the standard Mininet network emulator.
In this post, I describe the unique functions available in the Mininet-WiFi network emulator and work through a few tutorials exploring its features.
In this post, I present the basic functionality of Mininet-WiFi by working through a series of tutorials, each of which works through Mininet-WiFi features, while building on the knowledge presented in the previous tutorial. I suggest new users work through each tutorial in order.
I do not attempt to cover every feature in Mininet-WiFi. Once you work through the tutorials in this post, Continue reading