openflow controller

SDN (Software Defined Networking) SDN is not equal to OpenFlow, its relationship is similar to the Internet is not equal to IP protocol, PSTN is not equal to 7th signaling, IMS does not equal to the sip,web system is not equal to the HTTP protocol. OpenFlow is only the SDN controller control forwarding Surface Equipment protocol, the controller's own architecture

future network will surely be like this: the underlying data path switches and routers are "dumb, simple, and minimal ", it also defines an open public API for streaming tables, and uses controllers to control the entire network. In the future, researchers will be able to freely call the underlying API on the Controller for programming, so as to realize network innovation. OpenFlow is a powerful promoter

OpenFlow is an exchange technology that uses the OpenFlow protocol to establish a Software Defined network. It can manage the network as a whole rather than countless independent devices. Currently, many vendors have begun to consider using the OpenFlow protocol. 1. Traditionally, the Spanning Tree Protocol or some other new standards (such as multi-link transpar

action of the given type is currently present in the actions set, Then it will overwrite, or join directly.5) Write-metadata metadata/mask: Writes the specified Metadata value to the current Metadata domain.6)goto-table next-table-id: Specifies the next flow table in pipeline processing. The Table-id must be larger than the current flow table ID, and the last flow table in pipeline cannot contain this instruction; If only one flow table OpenFlow swit

of experimental flow and production flow Meet the requirements of the current supplier closed platform The openflow switch needs to meet: Working with the flow table with action Forwarding a stream table to a given port Encapsulating the forwarding flow table to the controller Drops a stream of packets Supports general processing of switches Has a se

Bkjia.com exclusive translation] the new network traffic management protocol has been demonstrated and can be applied in practice. With the promotion of industry institutions, the new routing protocol OpenFlow will provide users with unprecedented management methods to reduce their necessary work intensity in terms of network control. OpenFlow uses a software-defined network activity. That is to say, you ca

Software Definition X has become increasingly popular. Software is eating the world. The same is true for Software Defined networks. Both in the industrial and academic fields will be a great revolution. They are all following the direction of this industry, looking for their own research points, and paying attention to the development of standardization. Various controllers and prototype systems have emerged one after another. Some of them are SDN debug and security. In short, they make the eco

White Paper (version):function (openflow half-yearly upgrade)flowtable Flow table: consists of a number of flow table items, each of which is a forwarding rule. The packet that goes into the switch is queried by the flow table to obtain the destination port for forwarding. The flow table entry consists of a header field, a counter and an operation, where the head field is a 10-tuple, which is the identification of the flow table item, and the counter

Recently see the POF code to see the headache, but fortunately is done, the rest is the idea of POF can be integrated into the code of the EPC, I also for the future 5G point of view is not? First of all, say what POF is.Introduction to POFThe full name of the POF (Protocol oblivious Forwarding) is the protocol is not aware of forwarding, Huawei proposed an improved forwarding method on the OpenFlow, this way do not need to know the protocol is what t

IPhone SDKDevelopment BasicsOpenFlowProgramming is a small part of this article. When the user interface needs to display images by PAGE, useOpenFlowFunction provided by the Library, the user interface image to be displayed is displayed on pages, making programming very quick. This Library provides the same visual effects as the OS X desktop Finder program, as shown in 3-46OpenFlowLibrary page by page for the image display program, you can press the screen to scroll around the display, double-cl

A long time not to blog, mainly because of laziness. Not much nonsense to say, now let this can only record their own learning process. What's the OpenFlow architecture, and what's good for me. If you don't understand, go ahead and see. Go directly to the topicMy platform: PC (Linux ubuntu 13.10), as well as the floodlight and Mininet mentioned in the title, also use the virtual machine software, I use VirtualBox. This architecture is as follows:The f

Huawei Agile Switch S12700 formally passed the OpenFlow v1.3 conformance Certification test of the Global SDN Test Certification Center, the world's leading information and communications solutions provider, and became the first box-type product in the world to pass the certification. This test also passed the S6720-ei, s5720-ei box switch, Huawei S-Series switches have become through the OpenFlow V1.3 Conf

SDN is undoubtedly the most popular keyword in the network field in 2013, but more is the concept hype. Many vendors have published their own SDN products and strategies, however, only a few released products are commercially available. In 2014, the SDN technology will make a great leap, and more products will be deployed and ready. By interviewing several industry analysts and discussing the SDN market forecast for 2014, we generally think that SDN will stride forward. 1. More

resource usage Ideas:In L2 ~ Adds data stream feature information differentiation based on L4 Network InformationAudio streams, video streams, and plain text streamsSuch as the data stream type, so as to set different timeout values for the stream data packet table items of different stream types, to maximize the use of stream table resources while meeting the processing capabilities of the controller, this improves the matching rate of the str

Ios + openflow problems, iosopenflow Environment: xcode5.1 + ios7.1 Requirement: Add B view to the scroll attempted by A. [A addSubview: B. view] Problem: 1. View B is loaded to view A, but the image of Openflow is not loaded. After debugging, the proxy of openflow is not loaded. -- "viewDidAppear method of View B is executed; Cause analysis: If a view cont

Environment: Xcode5.1+ios7.1+openflow+ipadDescription: In view add Openflow,xib is the other view for automatic layout, the ipad horizontal screen when the horizontal line is not full screen, modify the OpenFlow Refreshcoverflow method is as follows: //Set the size of the OpenFlowAfopenflowview *coverflowview = [[Afopenflowview alloc] Initwi

Environment: xcode5.1+ios7.1Requirement: A attempted scroll to join B view; "A Addsubview:b.view"Problem:1. b view is loaded into a view, but OpenFlow's picture is not loaded. After debugging is OpenFlow the agent is not loaded. --The Viewdidappear method of B view is run;Analysis Reason:Suppose that a view included in a viewcontroller is added directly to a view. Just like this:[View1 AddSubView:viewController.view], so that our viewcontroller will n

Comparison between openflow and traditional vswitches in layer-2 Forwarding (1) L2 forwarding and Vlan traps Generally, after a string of bits in the physical layer are connected to the data link layer, frames are formed and verified. Only frames that pass the verification are forwarded. The concept of forwarding is MAC address-based forwarding for vswitches. The first layer-2 forwarding device is only based on MAC addresses and is used in LAN ), lat

-community/getting-started-for-developers/downloads-and-documentation2) Set Java_home• At the end of the profile file, add:Export java_home=/usr/share/jdk1.6.0_14Export path= $JAVA _home/bin: $PATHExport classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jarNeed to sign in again.3)./bin/karaf4) View the currently installed featureFeature:list-i5) Install the necessary feature6) Open Web pageHttp://yourip:8181/index.html=====================================================================

In the blog that introduces the four main objects, you can basically understand the process of program initiation:Main-->uiapplicationmain--> Create instances of UIApplication and app proxy appdelegate and set up proxy---> After the program starts, that is, after the splash screen is displayed, Appdelegate Create UIWindow (can be created automatically, or can be created manually)The question now is how to create a controller and set it as the root