Virtual networks.
Computer and Network Examples
A Virtual network is a computer network that consists of virtual network links, i.e. between the computing devices there isn't a physical connection.
Well known forms of network virtualization are virtual networks based on the virtual devices (for example the network based on the virtual devices inside a hypervisor), protocol-based virtual networks (VLAN, VPN, VPLS, Virtual Wireless network, etc.) and their combinations.
VLAN (Virtual LAN) is a logical LAN (local area network) based on the physical LAN that is divided on a multiple logical LANs using a VLAN ID.
VLAN can be on a VPN (virtual private network). VPN consists of several remote end-points (such as routers, VPN gateways of software clients) that are connected by the tunnel over another network. Two connected end points form the PTP VPN (Point to Point Virtual Private Network), more than two end points form a Multipoint VPN.
VPLS (Virtual Private LAN Service) is a specific type of Multipoint VPN. They can be Transparent LAN Services (TLS) that provides geographic separation and Ethernet Virtual Connection Services (EVCS) that provides geographic separation and VLAN subnetting.
Virtual Wireless network is a set of Wireless Access Points that behaves as one. Computer and Networks Area for ConceptDraw DIAGRAM provides professional looking examples, the libraries with ready-to-use predesigned vector stencils to help you create the Virtual Networks quick, easy and effective.
Example 1. Virtual network.
This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park and shows the Virtual network.
The 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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Nodes of any computer network are somehow organized in a hierarchy or a layout. Some of the common layouts like star network topology are more reliable and some like ring topology withstand high loads better. It is also important to distinguish logical topologies from physical.
This diagram represents a typical view of the star network topology. The star network topology is one of the most frequently used network topologies in the majority of office and home networks. It is very popular because of its low cost and the easy maintenance. The plus of the star network topology is that if one computer on the local network is downed, this means that only the failed computer can not send or receive data. The other part of the network works normally. The minus of using star network topology is that all computers are connected to a single point-switch, or hub. Thus, if this equipment goes down, the whole local network comes down.
Picture: Star Network Topology
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Special libraries of highly detailed, accurate shapes and computer graphics, servers, hubs, switches, printers, mainframes, face plates, routers etc.
Picture: Network Hubs
A flowchart is a simple but very functional tool when it comes to understanding a workflow or to removing unnecessary stages from a process. When drawing flowcharts, keep in mind that there are four common types of flowcharts, like document flowcharts and data flowcharts that show control over a data or document flow over a system. To show controls on a physical level, use system flowcharts. In addition, to show controls in a program, you can draw a program flowchart.
This flowchart diagram represents the piece of an article editing process, that involves the author and editor. It was created using the Basic Flowchart notation that consists from the basic flowchart symbols. The start and the end of the process are indicated with "Terminator" symbols. The "Process" symbols show the action steps consisting from making edits and searching for a compromise, when the author does not agree with the suggestions of the editor. The "Process" symbol is the general symbol in process flowcharts. The "Decision" symbol indicates a branching in the process flow. There are two branches indicated by a Decision shape in the current flowchart (Yes/No, Disagree/Agree). This basic flowchart can be used as a repeating unit in the workflow diagram describing the working process of some editorial office.
Picture: Types of Flowcharts
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In general, you can use any icons to represent network equipment on a diagram. However, there are some icons, for instance, Cisco icons, shapes, stencils and symbols, that are recognizable worldwide. Using those icons you can create Cisco network topology diagrams in minutes and share them anywhere.
The icons depicting Cisco network equipment are recognized and generally applied as standard images for designing network diagrams. They are free to used , but can not be reworked. Cisco network diagrams are created to depict how signals processed on the network equipment and end-user computers and how data transfer through LAN or WLAN between nodes. The vector graphic library of ConceptDraw CISCO Network Diagrams solution includes about 90 icons of Cisco network equipment for designing computer network diagrams with ConceptDraw DIAGRAM.
Picture: Cisco Network Topology. Cisco icons, shapes, stencils and symbols
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How to describe the necessity of using network security devices and visually illustrate this information? Now, it's very easy thanks to the ConceptDraw DIAGRAM diagramming and vector drawing software extended with Network Security Diagrams Solution from the Computer and Networks Area of ConceptDraw Solution Park.
Picture: Network Security Devices
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Talking about companies, that have influenced the entire industry, we should mention Cisco and it’s influence on network design. Nowadays, this equipment has became a kind of standard, and Cisco icons, shapes, stencils, symbols and design elements are easily recognized among others. You can use these icons to develop a network diagram of any complexity.
When dealing with creating a pack of network documentation, system administrator often have to depict a network containing a network equipment of such a well-known manufacturer as Cisco. As Cisco has developed its own production standard icons that are strongly recommended to use in Cisco network diagrams. The best way to draw Cisco Network diagram Cisco certified icons is using ConceptDraw solution for Cisco Network Diagrams. Using Cisco symbols library provided by this solution allows system administrator, or network architect to design a prototype of a new network or document an existing one.
Picture: Cisco Network Design. Cisco icons, shapes, stencils, symbols and design elements
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When talking about engineering, one should define all the terms used, so anybody could understand the topic. Typical network glossary contains definitions of numerous network appliances, types of networks and cable systems. The understanding of basic is crucial for server management, network administration and investigating problems.
The network glossary defines terms related to networking and communications. The most of glossary items has their visual representation in ConceptDraw DIAGRAM libraries of the Computer Network Diagrams solution. This illustration presents a local area network (LAN) diagram. It designed to show the way the interaction of network devices in a local network. The diagram uses a library containing symbols of network equipment, connections and the end-point devices such as network printer, hubs, server, modem and finally computers (PC, mac, laptop). This diagram depicts a physical LAN topology.
Picture: Network Glossary Definition
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ConceptDraw Network Diagram is ideal for network engineers and network designers who need to draw Logical Network diagrams.
Picture: Network Diagram SoftwareLogical Network
Today, we can’t imagine our lives without daily data exchange. To call a set of devices that can be connected with each other a computer network, we must be sure that these devices support appropriate protocols to transfer data. A network consisting of personal devices is private, and global computer networks, for example, Internet, connects network nodes worldwide.
This diagram represents a computer telecommunication network. The network depicted on the current diagram is featured with networked communication devices that provide data exchange through Internet. The network interconnections and connections between Internet nodes are settled using the cable media and wireless media. The nodes are the network workstations (terminals). and host computers. This network diagram was drawn with ConceptDraw DIAGRAM and its Computer and Networks Diagrams solution.
Picture: Computer Network. Computer and Network Examples
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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 Hypercube network topology.
Network topology is the topological structure of the computer network.
Hypercube is a type of the toroidal network. The Torus is a topology with n-dimensional grid network with circularly connection of the nodes. If the number of nodes along each dimension of the toroidal network is 2, it is a Hypercube network topology.
Picture: Hypercube Network Topology
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