Archive › OpenFlow
SDN, OpenFlow , SDN technology, OpenFlow protocol

SDN and OpenFlow Overview – Open SDN, SDN via APIs and Overlay based SDN

In this video we discuss the emerging SDN technology and how it is changing networking as we know it. We discuss the various definitions of SDN including the OpenFlow protocol. The three main definitions of SDN are: 1) Open SDN using OpenFlow 2) SDN via APIs 3) SDN via Overlays  

OpenFlow 1.0 and 1

OpenFlow pipelines on physical switches explained – 1.0 and 1.3 on HP ProCurve and Comware switches with the HP VAN SDN Controller

In this video David Bombal demonstrates the configuration of OpenFlow versions 1.0 and 1.3 on physical HP switches. David also explains how HP switches implement single or multiple table pipelines using both OpenFlow 1.0 and 1.3. The OpenFlow pipelines are viewed on both the HP VAN SDN Controller and the HP switches (HP ProVision / […]

OpenFlow switch configuration - HP Procurve and Comware with the HP VAN SDN controller

OpenFlow switch configuration – HP Procurve and Comware with the HP VAN SDN controller

In this video David Bombal demonstrates the configuration of OpenFlow on physical HP switches. Both Comware and ProVision configuration are explained. The switches are integrated with the HP VAN SDN Controller which updates the flow tables on the switches. David explains the OpenFlow flow tables on both the Controller and the switches. The switches used […]

Rest API

REST API

In this video, David demonstrates the use of a simple bash script to update flow table entries on OpenFlow switches using the RESTful API and the HP VAN SDN Controller. The HP Controller supports both Java and RESTful northbound APIs. The southbound API protocol used in this example is OpenFlow 1.0.

OpenFlow HP VAN SDN Controller and Mininet integration

OpenFlow: HP VAN SDN Controller and Mininet integration

This video demonstrates OpenFlow integration between the HP VAN SDN Controller and Mininet. The HP Controller is an SDN controller that supports OpenFlow version 1.0 and 1.3. Mininet allows for easy learning and testing of and OpenFlow network emulated on a PC. This is similar in concept to GNS3 or HP Simware.

stp-comware

Spanning Tree and OpenFlow

Questions I often get asked include: Can you run Spanning Tree and OpenFlow together? What happens when Spanning Tree blocks a port? What will OpenFlow do? Will not having redundant links in an OpenFlow network result in loops? Firstly, it is possible to run an OpenFlow network connected to the HP VAN SDN Controller with […]

openflow-hp-comware-5500

OpenFlow configuration: HP Comware 5500 switches with the HP VAN SDN Controller

HP Comware switches have supported OpenFlow from late 2013 on HP 5900 switches running Comware7. OpenFlow is now also supported on A5500-EI switches running Comware 5.20 release R2221 as well as A5500-HI switches running Comware 5.2 release R5501. The release date for some of this the was last few days of December 2013. Click here […]

datapath-ids

OpenFlow Datapath ID (DPID)

How are OpenFlow switches identified? Each OpenFlow instance on a switch is identified by a Datapath Identifier. This is a 64 bit number determined as follows according to the OpenFlow specification: “The datapath_id fleld uniquely identifies a datapath. The lower 48 bits are intended for the switch MAC address, while the top 16 bits are […]

OpenFlow configuration HP ProVision switches with the HP VAN SDN Controller

OpenFlow configuration: HP ProCurve switches and the HP VAN SDN Controller

In this blog entry I’ll show you how to get a basic OpenFlow network working using HP ProVision switches (formally ProCurve and E-Series)  and the HP VAN SDN Controller. See this blog entry for the configuration of HP Comware switches. See other blog entries for more complicated topologies. This is a simple topology of two 3500yl switches […]

Mininet and the HP VAN SDN Controller

Mininet is a network emulator that can create and emulate an entire OpenFlow network locally on your PC. This is similar in concept to network emulators such as Simware (HP Comware) or GNS3 (Cisco IOS). Mininet allows you to create different topologies consisting of OpenFlow switches and hosts (end devices). Topologies can vary from a single […]