sdn protocols

In the SDN standard system developed by ONF, in addition to OpenFlow switch specification pairs, there is also a Protocol named OpenFlow Configuration and Management Protocol (OF-CONFIG) also needs to be concerned. As mentioned above, OpenFlow defines a kind of southbound interface in SDN network architecture, and proposes a method for the Controller to send a flow table to the OpenFlow switch to control th

The construction of SDN competition environment and the realization of the first major problemDue to the lack of physical equipment, the virtual machine to implement the Floodlight controller, Openvswitch (hereinafter referred to as: OVS) and mininet all kinds of SDN environment to be used to build. The following will give their construction steps and then use Mininet simulation to give the challenge of the

The second SDN contest--Must answer 2Section 2 Small topic: Access Restrictions@ Wenzhou University 12 Network workersFirst, Experimental BackgroundTo prevent the external server from being D D OS attacks, which restrict access too frequently for a certain period of time. The majority of attacks are blocked by the access control system established for a particular network segment and service before reaching the target of the attack. Second, Experiment

-like extension servants--topo tree,depth=a,fanout=b Depth represents the tree depth, and fanout indicates that each node has several sub-nodes. All leaf nodes are hosts, non-leaf nodes for the switch.4 Custom topologiesStartsudo mn--custom ~/mininet/custom/mytopo.py--topo=mytopo--controller=remote,ip=OpenFlow protocol SettingsStart a switch that supports openflow1.3sudo mn--controller=remote,ip=10.108.125.9,port=6633--switch ovsk,protocols=openflow13

is sent out and parsed by neighbor nodes, it is possible to know the source destination switch of the link and the source destination interface.Two. Ryu Topology Discovery principleOpenFlow's official does not prescribe a standard topology discovery method, now OFDP (OpenFlow Discovery Protocol) is still using the Link Discovery Protocol LLDP in the traditional network, and then introduces Ryu how to use LLDP to discover the topology, Suppose there are now two OpenFlow switches connected to the

The usage of softswitch protocol is described in four special protocols. Next we will give a brief introduction to several main Softswitch protocols, such as H.248/MEGACO, Media Gateway Control Protocol MGCP), and Session Initiation Protocol SIP. Main protocols used by Softswitch The softswitch system involves many Softswitch

A Preliminary Study on WCF-17: the equivalence of WCF data protocols, a preliminary study on wcf-17 protocolsData contract equivalenceFeatures If the client successfully sends data of a certain type to the service or the service successfully sends the data to the client, the receiving end does not necessarily have to send data of this type. The only requirement is that the two types of data protocols sho

In October 2012, Midokura with its flagship SDN platform Midonet in the United States. According to Midokura, Midonet is a distributed, decentralized virtual platform that separates users ' cloud assets from the network infrastructure and provides a more scalable and efficient network solution for a highly virtualized cloud environment.1 midonet OverviewMidonet is an open, software-only, highly scalable, resilient network virtualization system. Becaus

It may be useful to use ABAP to schedule jobs in other systems asynchronously. The principle is similar to scheduling event on R3 on BW side, The event returns a successful or failed status to the BW process chain. The detailed process in the following section is derived from Sdn. You can create a job in R/3 to be triggered "after event". Then in your process chain, you create an ABAP process: Call mode: asynchronous Called from: Destination (your R

All the friends who engage in SAP must be familiar with the SDN forum of this sap company. I had nothing to do in the first few days. I simply went online and came to this forum. Http://forums.sdn.sap.com/index.jspa only found that this good thing too much. After a whole day, I realized that this is the forum I have been looking for so long. The Forum is a platform for exchanges between SAP experts from all over the world. There are various questions

How to quickly learn about network protocols and network protocolsI. What is the network protocol? Generally speaking, network protocols are a bridge between networks for communication and communication. Only computers with the same network protocol can communicate and communicate information. This is like the various languages used for communication between people. Only when the same language is used CAN c

Network transmission protocol or communication protocol for shortProtocol) refers to the common language for computer communication. Currently, the most popular computer communication is network communication. Therefore, the "Transfer Protocol" generally refers to the transmission protocol for computer communication, such as TCP/IP and NetBEUI. However, the transfer protocol also exists in other computer forms of communication, such as communication between objects in object-oriented programming

Redis Research (13)-security and communication protocols, redis research communication protocols I. Security Salvatore Sanfilippo, author of Redis, once published the Redis declaration, which mentions Redis to be concise and beautiful. Redis does not do much work at the security level.1. trusted environmentThe Redis security design is based on the premise that "Redis runs in a trusted environment". During t

Open source is already widely used in today's software industry, but does open source mean that users can do whatever they want to do with open source code? The answer is no. Open-source sports also have their own game rules and ethics. Failing to comply with these rules will not only damage the healthy development of the open source movement, but also cause reputational and market losses to violators, and more likely fall into legal disputes and compensation. There are many open-source

Explanation of ES6 syntax iteration protocols and iterator protocols; explanation of es6 The supplement of ECMAScript 2015 is not a new built-in or syntax, but a protocol. These protocols can be implemented by any object that complies with certain conventions.There are two protocols: the iteratable protocol and the ite

The routing information protocol, that is, the RIP Protocol. This protocol is one of the earliest in the routing protocol family. It plays a fundamental role in the development of some subsequent protocols. So let's compare several protocols. The Routing Information Protocol (Routing Information Protocol) is an ancient Routing Information Protocol based on the distance vector algorithm. It selects the optim

prompt" Window /? You can see the corresponding prompt information. Network Protocol-DHCP protocol (The full name of the DHCP Protocol is Dynamic Host Configuration Protocol). DHCP can automatically assign an IP address to each computer in the LAN, complete the TCP/IP protocol configuration for each computer, including the IP address, subnet mask, gateway, and DNS server. In this way, the Administrator does not need to manually configure the TCP/IP protocol for each computer in a LAN, especiall

Applications Application layer Protocol Transport Layer protocol name conversion dns UDP File Transfer tftp UDP Route Selection Protocol rip UDP IP address configuration NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;BOOTP ,dhcp UDP Network Management snmp UDP Remote file server nfs NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;UDP IP Phone Proprietary Protocols UDP Streaming Multimedia communications proprietary

OC-Concepts and usage of protocols, oc-concepts of protocols In the previous article, we introduced the class extension in OC: Extend. The protocol in OC is equivalent to the interface (abstract class) in Java, but the name in OC is more vivid, because when we are learning interfaces in Java, it can be seen that the interface is equivalent to a contract (Protocol), marking its implementation class. Of cour

protocol used by this file transfer process is called the FTP protocol. File transfer in FTP establishes two TCP connections, respectively, to the control connection to use when sending a transmission request and to the data connection that is used when the data is actually transferred. Remote login (telnet and SSH) is a feature that logs on to a remote computer and enables programs on that computer to run. Remote logins commonly used telnet and ssh two kinds of