Small and medium-sized companies have network infrastructure which can total ten or more networking and computing devices (computers, servers, printers, telephones, routers, fax machines, scanners, etc.) All elements of a network have their own settings configured for fast and reliable service. As a company grows, it is necessary to incorporate new devices into the network, update existing devices, change the network topology, and even add new subnets. Changing the configuration of the network is only possible if there is documentation of the operating infrastructure.
To achieve high-quality documentation of network infrastructure, it is necessary to include the overall network structure topology, a communication scheme, the layout of the main devices, the scheme arrangement of servers in server racks, the list of installed services, services and databases for each server, and the scheme of corporate PBX.
Network Topology Diagram Software
ConceptDraw DIAGRAM is a powerful Network Topology Diagram software and intelligent vector graphics engine that can be used for network topologies diagrams. The shape libraries contain ready-to use icons of computers, servers, network devices, standard symbols and smart connectors for the quick and easy arrangement of network diagrams.
With ConceptDraw DIAGRAM you can simply create professional looking diagrams:
- Network topology,
- Physical network,
- Logical network,
- Network mapping,
- Home area networks (HAN),
- Wireless network,
- Cisco network topologies,
- Fully connected network topology,
- Bus network topology,
- Star network topology,
- Ring network topology,
- Mesh network topology,
- Tree network topology,
- Cable network,
- Network wiring,
- Local area network (LAN),
- Wide area network (WAN) topology,
- Metropolitan area networks (MAN),
- Campus area networks (CAN),
- Storage area networks (SAN),
- Near-me area networks (NAN),
- Personal area (PAN) networks,
- Near field communication (NFC),
- ISG network,
- Interactive voice response (IVR) networks,
- Activity network,
- Local network area,
- Network security,
- Network wiring cable,
- Computer network architecture,
- Enterprise private network,
- Internet networks,
- Network configuration,
- Active directory network,
- Network protocols,
- Network voip,
- Virtual networks,
- Virtual private networks (VPN),
- Rack diagrams,
- Network layout,
- Backbone network,
- Radio networks,
- Television networks,
- Telecommunication networks,
- Overlay networks,
- 3D network diagrams
- Butterfly network,
- OSPF Network,
- P2MP network,
- DES network,
- Software Defined Networking System Overview,
- Cloud Computing,
- Mesh network,
- Internet Connectivity,
- Computer network,
- Digital Communications Network,
- Netflow architecture,
- Network Community Structure,
- phone networks,
- Overlay network,
- Office Network,
- VMware vNetwork Distributied Switch (vDS),
- EPN Frame-Relay and Dial-up Network,
What is Network Topology
Network topology is the topological structure of the computer network. Network topology can be physical or logical. The logical topology describes the network dataflows from one device to the next. The physical topology is the arrangement of the different elements of the computer network such as computers, cables and other devices. The physical topology shows the cabling layout of the network, the locations of the nodes and interconnections between cables and nodes. A network logical and physical topologies can be the same.
There are the following basic types of the network topologies:
Bus Network Topology
In local area networks where bus topology is used, each node is connected to a single cable. A signal from the source travels in both directions to all machines connected on the bus cable until it finds the intended recipient. If the data matches the machine address, the data is accepted, otherwise the machine ignores the data. Since the bus topology consists of only one wire, it is rather inexpensive to implement when compared to other topologies. However, the low cost of implementing the technology is offset by the high cost of managing the network. Additionally, since only one cable is utilized, it can be the single point of failure. If the network cable is terminated on both ends and when without termination data transfer stop and when cable breaks, the entire network will be down.
Pic. 1. Bus Network Topology
Star Network Topology
In local area networks with a star topology, each network host is connected to a central hub with a point-to-point connection. In Star topology every node (computer workstation or any other peripheral) is connected to central node called hub or switch. The switch is the server and the peripherals are the clients. The network does not necessarily have to resemble a star to be classified as a star network, but all of the nodes on the network must be connected to one central device. All traffic that traverses the network passes through the central hub. The hub acts as a signal repeater. The star topology is considered the easiest topology to design and implement. An advantage of the star topology is the simplicity of adding additional nodes. The primary disadvantage of the star topology is that the hub represents a single point of failure.
Pic. 2. Star Network Topology
Ring Network Topology
A network topology that is set up in a circular fashion in which data travels around the ring in one direction and each device on the ring acts as a repeater to keep the signal strong as it travels. Each device incorporates a receiver for the incoming signal and a transmitter to send the data on to the next device in the ring. The network is dependent on the ability of the signal to travel around the ring. When a device sends data, it must travel through each device on the ring until it reaches its destination. Every node is a critical link.
Pic. 3. Ring Network Topology
Mesh Network Topology
A mesh network is a network topology in which each node relays data for the network. All nodes cooperate in the distribution of data in the network.
A mesh network can be designed using a flooding or a routing techniques. When using a routing technique, the message is propagated along a path, by hopping from node to node until the destination is reached. To ensure all its paths' availability, a routing network must allow for continuous connections and reconfiguration around broken or blocked paths, using self-healing algorithms. The self-healing capability enables a routing based network to operate when one node breaks down or a connection goes bad. As a result, the network is typically quite reliable. A mesh network whose nodes are all connected to each other is a fully connected network. Mesh networks can be also seen as one type of ad hoc network.
Pic. 4. Mesh Network Topology
Tree Network Topology
This particular type of network topology is based on a hierarchy of nodes. The highest level of any tree network consists of a single 'root' node that is connected with a single or multiple nodes in the level below by point-to-point links. These lower level nodes are also connected to a single or multiple nodes in the next level down. Tree networks are not constrained to any number of levels, but as tree networks are a variant of the bus network topology, they are prone to crippling network failures should a connection in a higher level of nodes fail/suffer damage. Each node in the network has a fixed number of nodes connected to it at the next lower level in the hierarchy, this number referred to as the 'branching factor' of the tree.
Pic. 5. Tree Network Topology
Fully Connected Network Topology
A fully connected network, complete topology, or full mesh topology is a network topology in which there is a direct link between all pairs of nodes. In a fully connected network with n nodes, there are n(n-1)/2 direct links. Networks designed with this topology are usually very expensive to set up, but provide a high degree of reliability due to the multiple paths for data that are provided by the large number of redundant links between nodes. This topology is mostly seen in military applications.
Pic. 6. Fully Connected Network Topology
Pic. 7. Common Network Topologies Diagram
These samples was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the Computer Network Diagrams Solution from Computer and Networks area of ConceptDraw Solution Park. These diagrams show the basic types of the network topologies.
Pic. 8. Network Topologies Solution
Use the predesigned vector stencils, examples and templates from the Computer Network Diagrams Solution for ConceptDraw DIAGRAM to design your own professional Computer Network Topology Diagrams quick and easy.
TEN RELATED HOW TO's:
Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park provides 14 libraries with 450 ready-to-use predesigned vector objects that can be used for quickly and easily drawing the professional Cisco Network Diagrams.
Picture: Cisco Design
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
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
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
The Butterfly Network is the scheme that connects the units of a multiprocessing system and needs n stages to connect 2n processors. At the each stage the switch is thrown in depending of the particular bit in the addresses of the processors that are connected.
Picture: Butterfly Network. Computer and Network Examples
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
A list of parameters on which networks differ is very long. A large network with a range up to 50 kilometers is called metropolitan area network (MAN), and this type of network can include several local area networks. Metropolitan networks in their turn connect into global area networks.
Here you will see a Metropolitan Area Network (MAN). This is an extensive network which occupies a large territory including a few buildings or even the whole city. The space of the MAN is bigger than LAN, but lower than WAN. MAN comprise a lot of communication equipment and delivers the Internet connection to the LANs in the city area. Computer and Networks solution for ConceptDraw DIAGRAM provides a set of libraries with ready-to-use vector objects to design various kinds of computer networks.
Picture: Metropolitan area networks (MAN). Computer and Network Examples
A Home Area Networks (HAN) is a type of local area network that is used in an individual home. The home computers can be connected together by twisted pair or by a wireless network. HAN facilitates the communication and interoperability among digital devices at the home, allows to easier access to the entertainments and increase the productivity, organize the home security.
This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park and shows the home network diagram.
Picture: Home area networks (HAN). 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.
This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park and shows the Virtual network.
Picture: Virtual networks. Computer and Network Examples
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Picture: Skype as eLearning Platform