The Dallas / Fort Worth Cisco Users Group


The DFWCUG is an organization in Dallas TX that works with and helps organize new Cisco Users Groups in the US.

The Dallas / Fort Worth Cisco Users Group

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The Dallas / Fort Worth Cisco Users Group

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The Dallas / Fort Worth Cisco Users Group is an independent users group which meets on the first Wednesday of each month for the open exchange of technical information regarding the networking industry and Cisco products for the benefit of Cisco users.
Our meetings are free to attend - all we ask is that you sign up via our membership / meeting announcements mailing list.

We also have a pizza buffet starting at 6:00 pm (no charge) with the main meeting starting at 6:30 pm.


Our Next Meeting - Wednesday April 5, 2017

SDN/OpenFlow Analysis

What is SDN? What is OpenFlow? Basically SDN is about programming network devices like switches and routers from a central point known as the SDN Controller. The controller uses a common protocol - OpenFlow when communicating to the devices.

We'll start by looking at OpenFlow traffic, the initial stages of communications between OpenFlow enabled switches and the SDN controller, see examples of OpenFlow comms using applications on the SDN controller for configuring the switch for flows, and demonstrations showing how a switch processes traffic based on OpenFlow programming and standard switch operations - this is known as "Hybrid SDN".

Everyone is encouraged to bring their laptop with Wireshark installed (min v2.0.0), download the provided trace file, and follow Jeff viewing OpenFlow packets. You will use built-in Wireshark OpenFlow display filters and create color definitions to assist in recognizing OpenFlow traffic quicker.

Jeff Carrell, Network Instructor for HPE Education Services

Jeff Carrell is a Network Instructor for HPE Education Services. Jeff facilitates a plethora of networking courses offered by HPE, serves as a SME for customized courses for specific customer requirements, and participates in new course development.

Most recently Network Consultant at Network Conversions, he is a frequent industry speaker, freelance writer, IPv6 Forum Certified Trainer, and was a network instructor and course developer to major networking manufacturers. He is a technical lead and co-author for the book, Guide to TCP/IP: IPv6 and IPv4, 5th Edition and lead technical editor on Fundamentals of Communications and Networking, Second Edition. Jeff focuses on IPv6 and SDN interoperability, and is also working in Network Automation/NetDevOps.