Network Diagram

What is a Network Diagram?

Network Diagrams are a visual presentation of a computer or telecommunications network, which can illustrate the activities and events of a project. They show the components that make up a network and how they interact, including routers, devices, hubs, and firewalls.

In general, a network diagram consists of a network that is made up of interconnected groups or systems. The scope of a simple network diagram can be either a single application, a family of applications, or even an entire enterprise. There are also other complicated network diagrams broadly designed to cover home networks, wireless networks, networking wirings, LAN networks, network topology, activity networks, and network cabling.

In the 21st century, most work is done via computers and machines. The large administration offices where people used to work mainly with paper-printed documents and written data are now replaced by digital libraries and laptops. Instead of having storage rooms, nowadays we have servers and virtual storage. Moreover, today people who work together as a team can be physically miles away from each other, yet that won’t be a problem. Their working machines can be connected to a computer network, allowing them to collaborate. This is where Network Diagrams come in handy. Whether large or small is the organization, there is always a need to visualize the connection between the servers and the computers, as well as the various access levels.

Network diagrams are divided into two types- logical and physical diagrams.

Logical Network Diagram

Logical network diagrams show the flow of information and how the devices within the network interact with each other. This also includes subnets, network objects and devices, routing protocols and domains, voice gateways, traffic flow, and network segments.

Physical Network Diagram

Physical network diagrams illustrate the physical arrangement/layout of the devices in the network. This type of diagram maps out the network architecture, including cabling, hardware, and ports.

How are Network Diagrams used?

Network diagrams are used in computer telecommunication to draw a graphical chart of a network. Every kind of network can be easily illustrated, showing clearly all users. This type of diagram is particularly useful for network engineers and designers in compiling detailed network documentation. Network diagrams also serve to show the exact type of connection they have with the rest of the machines in the network, as well as the data storage units.

Network Diagrams can also help when needed to detect an issue in the network hierarchy. By being able to see the exact topology of connections used for building the network and all the machines connected to it, one can track down the problem much easier.

With their capacity for showing how network components interact, network diagrams can serve a variety of purposes, including:

Set up the architecture of a home or office network.
Synchronize network updates.
Keep track and provide fast troubleshooting for issues on the network.
Follow PCI Security Standards and other requirements.
Improve internal communication and project management.
To audit storage units.
Requesting a proposal to a vendor.
Sending proposals to stakeholders.

Network Topology

What is Network Topology?

Network topology refers to the arrangement of elements within a network. Like network diagrams, network topologies can describe either the physical or logical aspects of a network. Logical topology is also known as signal topology.

Depending on the overall size and requirements, there are different network topologies. Each topology has benefits, suitable for different situations. It is highly important to choose the most effective since it can affect performance, stability, and other outcomes of the network.

Network management and monitoring require both the physical and logical topology of a network, to ensure efficiency and effectiveness of the connection. When it comes to networks there are several different main topologies which differ mainly by the manner of connecting:

Star Topology

The Star Network is the most common network setups. In the star topology, every node connects to a central network device that may be a hub, switch, or router. The central network device acts as a server and the peripheral devices as clients. The connection to the center is made with Unshielded Twisted Pair (UTP) Ethernet.

Advantages of Star Topology

Easy to connect and remove devices from the network.
If one computer on the network fails, the rest of the network continues to function normally.
Disruptions in the network can be easily detected.

Disadvantages of Star Topology

A higher cost to implement, especially when using a switch or router as the central network device. It requires more cable length than a linear topology.
If the hub, switch, or router fails, it will take down the network access on the entire LAN.
The performance and number of nodes the network can handle, are determined by the central network device.

Ring Topology

In a Ring Network, all nodes are connected in a circle path forming a closed loop. Each device has two neighbors. The data travels around the network either clockwise or counterclockwise( in one direction). The data is sent and received by a Token. Usually, this type of network is found in offices, small buildings, or schools.

Advantages of Ring Topology

Data is transferred quickly, as it flows in one direction.
There is no need for a network server to control the connectivity between workstations.
Performs better than a Bus topology under heavy network load.
It prevents network collisions because of the media access method or architecture required.

Disadvantages of Ring Topology

Moves, adds, and changes of devices can affect the network. If one workstation or port goes down, the entire network gets affected.
All Network Interface Cards (NICs) on the ring network must operate at the same speed.
Each packet of data must pass through all the computers between source and destination. This makes it slower than a Star topology.

Bus Topology

In a Line topology or Bus topology, all devices are connected to a single cable or backbone. At each end of the bus, there is a terminator, which absorbs the signal when it reaches the endpoint, preventing the signal bounce. The signal travels through the length of the cable in both directions from the sending computer. If a device communicates to another on the network, it sends a broadcast message onto the wire that all devices see. However, only the intended recipient accepts and processes the message. Bus topology differentiates by having all nodes connected through a central medium and it is easy to install.

Advantages of Bus Topology

Less cable length than a Star topology.
Works well under a small network load.
Easiest network topology for connecting computers and peripherals in a linear line.

Disadvantages of Bus Topology

The entire network shuts down if there is a break in the main cable.
Difficult to troubleshoot and identify the problem.
Single bounce can create problems in the computer network, causing the two signals to collide.
Terminators are required for both ends of the main cable.

Tree Topology

Tree topology is a combination of multiple star topology onto a bus. In this configuration, nodes of the underlying bus network topology are replaced with a complete star topology. The hub is connected directly to the tree bus, allowing each hub to function as the root of a tree of devices.

Advantages of Tree Topology

Point-to-point or point-to-multipoint connections between the segments.
Leaf nodes can accommodate more sub-tree in the hierarchical chain.
Suitable for large networks, spread into a lot of branches.

Disadvantages of Tree Topology

Difficult to configure and wire, compared to other topologies.
The connectivity between tree branches is dependent on the main backbone switches. If the backbone line fails the whole segment goes down.
Additional devices and a lot of cable length.

Mesh Topology

Mesh topology has multiple connections, as all computers and network components are interconnected directly with each other. It is the most fault-tolerant network topology. Like their traditional WAN counterparts, meshed VPN topologies can be implemented in a fully or partially meshed configuration. In the full meshed configuration there is a large number of alternate paths to any given destination. Also, fully meshed configurations have exceptional redundancy, as all VPN devices provide a connection to one another. In the partial-mesh topology, all the links are connected in a more limited fashion to other links.

Advantages of Mesh Topology

The performance of the setup is independent of a single node or a single system.
Messages can be received quicker if the route to the intended recipient is short. Messages are highly likely to get through, as they have a variety of possible routes on which to travel.
New nodes can be added without interfering with other nodes.

Disadvantages of Mesh Topology

A high number of connections are needed to set up a full mesh network.
A lot of maintenance is required.
Fully meshed topologies are expensive, due to the requirement of a VPN device for every link in the mesh.

Network Diagram Symbols

A network diagram is a unique kind of cluster diagram that represents a wider or smaller structure of computers or other networking devices. For this reason, preidentified icons or symbols are used to draw network appliances and the style of lines between two nodes that describe the type of connection.

Cloud

Computer

Laptop

Terminal

Server

Firewall

Router

Network Storage

Storage

Modem

Hub

Printer

Phone

In MyDraw shapes library, you will also find a set of symbols from the leading cloud hosting services- Cisco and NetEquip (also Amazon Web Services, Azure, Google Cloud, etc.). For a more comprehensive list, see our full Network diagram shapes page .

How to Draw a Network Diagram in MyDraw?

Open a “Blank Drawing” file document in MyDraw.
Make sure you have opened Library Gallery> Libraries> General, Cloud( Amazon Web Services, Azure, Google Cloud), and Clipart library. The General folder library includes connectors, basic shapes, and arrows. Use these shapes to design the architecture of the Network diagram and to form the connections between devices. In the Cloud and Clipart library, you will find the network diagram shapes.
Choose the network topology. Network diagrams for a personal home network are much simpler (and, mostly linear) as compared to a rack network or VLAN network for an office.
Drag and drop some of the predefined shapes to your drawing page. Start building your network diagram by adding the network components.
Group the items. Shapes may be related either logically or physically, depending on what kind of diagram you are creating.
Label the items in your diagram. Add components names for clarity to anyone who wants to refer to it.
Add connections. Use lines and directional arrows to show how each component is connected.
In the Ribbon, you have a selection of tools and style editors: connectors, paragraph alignment, text, and shape styles.
Navigate to the ribbon and from the Design Tab, you can apply a design theme to your Network Diagram.
To make modifications to your connectors you can right-click on the page and select Shapes Properites>Geometry and click “Ok”. to apply the changes.
To add fill and stroke to your shape you can right-click on the shape and choose “Format Geometry”. To make changes to your typography you can select “Format Text Block”.
Once you are finished choose a file format to save your Network Diagram from File>Save or File>Export.