OSPF Network. Computer and Network Examples
Open Shortest Path First (OSPF) is a dynamic routing protocol based on the link-state technology and used the Dijkstra's algorithm for finding the shortest path. It was developed by IETF in 1988.
OSPF is an interior gateway protocol (IGP), it is widely used in large enterprise networks. OSPF routes the IP packets within a single routing domain. It gathers the information about the link state from the routers and makes the network topology map.
OSPF has the following advantages: the high rate of convergence in comparison with distance vector routing protocols, support of the network mask variable length (VLSM), optimal use of bandwidth.
Computer and Networks Area provides solutions that contain the libraries with a great number of predesigned vector stencils, a set of professional looking examples that you can change for your needs. All these allow you create the OSPF diagrams of any complexity in a few minutes.
Example 1. OSPF network.
This example was redesigned from the file [https://commons.wikimedia.org]
This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park and shows the OSPF diagram.
All 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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A Storage area network (SAN) is a dedicated network that provides access to data storage and operations only on the block level. SAN usually has own network of storage devices/elements and disk arrays that are connected with each other and to a remote data-sharing network. SANs are widely used for enhancing the storage devices (optical jukeboxes, disk arrays, tape libraries) that are accessible for networked servers.
This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park. It shows the hybrid of Storage area network (SAN) and Network Attached Storage (NAS) technologies.
Picture: Storage area networks (SAN). Computer and Network Examples
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Building plans are usually very complicated and a hard work to do. It would be nice to use a proper drawing software to facilitate the task. Design a site plan quick and easily with all the stencils and samples from ConceptDraw libraries.
This drawing shows content of the ConceptDraw vector libraries related to the site planning and arrangement of the living environment. ConceptDraw delivers about 50 libraries containing near one and a half thousands vector objects that will help you to design territory arrangement plans and make the Site plan sketches. You can use the Parking and Roads library for designing a parking space, or drawing transport management schemes. The Site Accessories library provides a number of objects, that allow you to depict various equipment of vehicle access control, street lamps, benches, trash cans and other items of the street environment.
Picture: Building Drawing Software for Design Site Plan
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The Audio & Video Connectors solution contains a set of pre-designed objects, libraries, templates, and samples; allowing quick and easy diagramming of various configurations of audio and video devices.
Picture: Audio Visual Cables and Connectors
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A database is a data collection, structured into some conceptual model. Two most common approaches of developing data models are UML diagrams and ER-model diagrams. There are several notations of entity-relationship diagram symbols and their meaning is slightly different. Crow’s Foot notation is quite descriptive and easy to understand, meanwhile, the Chen notation is great for conceptual modeling.
An entity relationship diagrams look very simple to a flowcharts. The main difference is the symbols provided by specific ERD notations. There are several models applied in entity-relationship diagrams: conceptual, logical and physical. Creating an entity relationship diagram requires using a specific notation. There are five main components of common ERD notations: Entities, Actions, Attributes, Cardinality and Connections. The two of notations most widely used for creating ERD are Chen notation and Crow foot notation. By the way, the Crow foot notation originates from the Chen notation - it is an adapted version of the Chen notation.
Picture: ERD Symbols and Meanings
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Network infrastructure planning is a very important process in the network construction, and the share of time allocated to this within the scope of the entire project may reach 60-80%. A competent and thorough approach to planning contributes to the quick investment return, and also increases the reliability and flexibility of the final system, reducing the probability of additional costs related to the incorrect implementation.
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Speed and cost are often mistaken for the most important parameters, and the rest of the parameters aren't even remembered. This is not entirely correct. Initially, it is necessary to assess the business plans for the future, because sometimes it is more profitable to invest more money in the beginning. If the business is to develop, then, consequently, demands on
Picture: Cisco Routers. Cisco icons, shapes, stencils and symbols
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Cisco switches and hubs deliver the best performance, and often used as network solutions for small businesses, enterprises, data centers. Cisco switches are the core interconnect devices of each computer network. The numerous Cisco switches specifically designed for various applications. Network switches are separated for two types: fixed configuration and modular switches. The fixed configuration switches deprecate swapping or adding another module, and vice versa for modular switch.
Picture: Cisco Switches and Hubs. Cisco icons, shapes, stencils and symbols
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ConceptDraw DIAGRAM is the only application on the Macintosh platform, supplied with a comprehensive Cisco icon set. For graphic solutions that support Windows, only Microsoft Visio has a library of Cisco shapes. ConceptDraw DIAGRAM is a valuable option to many network professionals that use Macintosh computers or work in a combined Mac and PC environment.
Picture: Cisco Network Objects in ConceptDraw DIAGRAM
The Cisco Network Diagrams Solution from the Computer and Networks area of ConceptDraw Solution Park helps you to create the Cisco Network Diagrams quick and easy using the ConceptDraw DIAGRAM diagramming and vector drawing software.
The Cisco Network Diagrams Solution contains 14 libraries with 450 ready-to-use predesigned vector objects.
Picture: How to Create Cisco Network Diagram
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The ConceptDraw vector stencils library Cisco People contains symbols for drawing the computer network diagrams.
Vector stencils library Cisco People contains 17 pictogram symbols and clipart for drawing the computer network diagrams using the ConceptDraw DIAGRAM diagramming and vector drawing software.
Picture: Cisco People. Cisco icons, shapes, stencils and symbols
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Studying informatics demands knowledge in the area of computer networks as well. The most famous world network, Internet, is an example of wide area network (WAN) topology that connects devices spread on any distance. Unlike other smaller networks that are limited to a building or to a campus, WAN is almost limitless.
This WAN (wide area network) diagram was created in ConceptDraw DIAGRAM. It shows a telecommunication network that covers a large geographical area connecting several settlements. This type of networks is commonly used by business and government institutions. Using the WANs enables them quickly communicate information between remote geographical points. To reproduce this network diagram, you will need the means, provided by ConceptDraw Computer and Network Diagrams solution.
Picture: Wide area network (WAN) topology. Computer and Network Examples
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