Software Defined Networking System Overview
Today is observed the extremely active growth in the bandwidth-intensive applications and permanent demand for speed, scalability, and resilience. The traditional networks and data centers are on the limit of their possibilities.
Software-Defined Networking (SDN) is a new powerful concept for decision these problems. SDN proposes to disaggregate the traditional networking stacks that are vertically integrated to customize the network operations for specialized environments and improve network service velocity.
SDN is a special approach to computer networking that allows network administrators to manage network services via the abstraction of functionality of the lower level. It is realized by separating the control plane from the data plane.
SDN is an important step in the evolution to the programmable and active networking. With SDN the network administrators have the programmable central control of the network traffic through the controller, without the physical access to the network's switches. Many networks use switches for sending, receiving and directing data over the network.
The networks with SDN allow to network administrators quickly respond on the changing of business requirements. The traffic can be formed from a centralized control console, there is no need to go out to another building to reconfigure switches individually.
The first supporters of SDN were OpenFlow, OpenDaylight, Brocade. The main application of SDN is the infrastructure as a service (IaaS), it is also used in the consolidated data-center, in traditional and geo-distributed campus networks.
ConceptDraw DIAGRAM is a powerful network diagramming and vector drawing software. It provides the Computer and Networks Area with many Solutions that contain the wide set of ready-to-use predesigned vector stencils, templates and samples to help you design the professional looking Software-Defined Networking (SDN) diagrams of any complexity quick and easy.
Example 1. Software Defined Networking System Overview
On this example you can see the Software-Defined Networking (SDN) diagram that was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park.
The network diagrams designed with ConceptDraw DIAGRAM are vector graphic documents and are available for reviewing, modifying, and converting to a variety of formats (image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash or MS Visio).
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Multiprotocol Label Switching (MPLS) is a mechanism in high-performance telecommunication networks that implements the data transfer from one network node to another using the labels.
ConceptDraw DIAGRAM is a powerful network diagramming and vector drawing software that provides the Computer and Networks solution with wide set of ready-to-use predesigned vector stencils and examples to help you design the MPLS Networks quick and easy.
Picture: Multiprotocol Label Switching (MPLS). Computer and Network Examples
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Any information system receives data flows from external sources. In order to visualize them there is a list of data flow diagram symbols that describes how the system components cooperate. If you want to create a data flow diagram, ConceptDraw DIAGRAM Solution Park has DFD Library that contains both Yourdon and Gane-Sarson notations.
This figure shows the content of vector libraries, delivered with ConceptDraw solution for data flow diagram (DFD). There are three libraries composed from about 50 vector objects used to make data flow diagrams.
They include a complete set of objects utilized by Yourdon-Coad and Gane-Sarson notations - two primary notations that are apply for data flow diagramming. Also, one can discover additional "Data flow diagram (DFD)" library that provides a data flow diagram elements for designing level 1 and context-level data flow diagrams.
Picture: Data Flow Diagram Symbols. DFD Library
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This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the Computer and Networks solution from Computer and Networks area of ConceptDraw Solution Park.
This sample shows the Point-to-point network topology.
Network topology is the topological structure of the computer network.
Point-to-point network topology is a simple topology that displays the network of exactly two hosts (computers, servers, switches or routers) connected with a cable. Point-to-point topology is widely used in the computer networking and computer architecture.
Picture: Point to Point Network Topology
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Local area network connects computers and other network appliances within an area, such as office building or a campus. It can be difficult to provide such network without a predesigned plan. For these purposes you can use network diagram software, which helps you to create LAN network diagrams and office network diagrams quickly and effortless. This will speed up your work and you can save the diagram for the future network improvements.
The following diagram illustrates a network topology of the small office. LAN configuration has a star topology. The local network joins 8 computers among which are several desktop PCs, laptop, two iMacs and iBook. The end-point devices are divided into three groups. Each group is connected to its hub. There is a network printer and a modem, which are interconnected with other devices through a network server. Each computer on the LAN can access the server through a corresponding hub.
Picture: Network Diagram Software. LAN Network Diagrams. Physical Office Network Diagrams
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Developing a software project supposes architecture first. To make it proper, you can use data flow diagram model in your current project.
The data flow diagram represents the Model of small traditional production enterprise that is made using Yourdon and Coad notation. It shows how the data is transfered through a process. According to the notation of Yourdon and Coad a process is represented by circles and data stores are drawn using parallel lines. This DFD was created using the ConceptDraw Data Flow Diagrams solution. Using this solution one can visualize data flow accordingly to the rules of two basic notations used for data flow modeling.
Picture: Data Flow Diagram Model
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Wireless network topology — logical topology.
Wireless network topology shows how the computers connect each other when there is no physical connection. The computers communicate each using the wireless devices.
Picture: Wireless Network Topology
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This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the Computer and Networks solution from Computer and Networks area of ConceptDraw Solution Park.
This sample shows the Hierarchical network topology.
A Hierarchical network topology interconnects multiple groups that are located on the separate layers to form a larger network. Each layer concentrates on the specified functions, this allows to choose the right equipment for the layer.
Picture: Hierarchical Network Topology
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