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LAN Diagram

> Edraw Knowledge > LAN Diagram
Posted by Allison Lynch | 09/27/2021

In a computer networking world, the term LAN is short for Local Area Network. Any computing devices that are connected together in a physical location forming a network, are called LAN. The size of the local area network varies depending on the number of devices connected together. The LAN can be in-home, offices, schools, etc.

In LAN, there can be desktop computers, laptops, printers, wifi-modem, servers to respond to requests, routers, and switches for connecting two or more LANs, etc. The cables like Ethernet are used to connect all the devices in a LAN.

The LAN is used for short areas like the home, offices, schools, etc., but the network's size varies depending on the number of networks connected together, forming one extensive network. The other types of networks are Wide Area Network (WAN) and Metropolitan Area Network (MAN). These networks are for large geographic areas like cities, etc.

Network classifications

As time is passing the LAN, WAN, and MAN are virtualized and are made on the cloud technologies. The enterprise has not to worry about the design and tools for making a LAN. This headache is for the party that is providing the cloud infrastructure.

Benefits of a LAN

The advantages of LAN are in the dozens. This technology is convenient for connecting the devices. These devices can easily send data to one another. The printers are also connected in a LAN, making people print documents with just one click. The computers are connected together and share a single wifi-connection.

Everyone uses LAN, not only in offices but also in homes, malls, stores, coffee shops, etc. The types of devices connected together on LAN are also increasing. You can also connect smart TVs, smartwatches, smart doors, smartphones, stereos, speakers, lighting, thermostats, window shades, door locks, security cameras--and even coffeemakers, refrigerators, and toys, and other IoT devices, etc.

Types of LANs

There are two types of LANs that are used in homes, offices, schools, and other places based on their networking needs, and they are.

Client-Server LAN

The Client-Server LAN is a network of multiple clients’ devices, and they all are connected with the central server. All the devices in the network are connected with one server either through cables or a wireless connection.

The server performs the heavy tasks for all the connected devices like network traffic management, files access, device and application access, security, authentication, etc. The client connected can perform the tasks as mentioned earlier either with each other or wants access to the internet.

The tasks the user wants to perform are pre-programmed on the server that helps the client do their tasks. The servers are programmed to do database access, email, document sharing, printing, and other services. The network and IT administrator then decides which clients need to write on files and who will read them. The Client-server LANs are used by schools, offices, industries, etc.

Peer-To-Peer LAN

There is no central server in this LAN that performs the heavy tasks for the clients like a client-server LAN. These networks are smaller both in size and sometimes in bandwidth too. In a Peer-to-Peer LAN, all devices are connected with each other and perform the tasks for each other. All the devices are functioning the network.

This type of LAN is used in homes and places where there is no need for a server.

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How to Create a LAN Diagram?

In this section, we will know how to create a Local Area Network(LAN). It is always best to consult the networking team to establish the LAN on your premises, but if you don't have any team, follow the below steps carefully.

Identify the Devices and the LAN You Want

The very first step is to know what devices do you want to connect to. Are these devices only mobile or IoT devices?

Then they can be connected through the wireless connection, but if you want to connect the servers and computers and they are in dozens, you should select the client-server network.

If you want to connect only five to six desktops, then you should go for peer-to-peer LAN. Counting the number of devices gives you how many ports could be there depending on the number of ports. The switch's port would also increase.

Connection Type

If you want a wireless connection, get a router that would connect all of these devices and establish an internet connection for them. But, for the desktops and servers, you have to get the measurement of cables by getting the distance between each device that would connect each other and to the server.

Connecting the Devices

Now, connect the router to the power supply and connect it with the modem for an internet connection if you opted for the wireless connection.

But, for the desktops, servers or printers, etc., connect them with an Ethernet cable from their ports to the switch, and then that switch would be connected with other switches or routers for further extending the network.

Next, set up the Dynamic Host Configuration Protocol by establishing the DHCP server or using the third-party utility. It will let all the connected computers obtain the IP addresses. Don't forget to turn on "Network Discovery" and "File and Printer Sharing."

Further Wireless Configurations

For further wireless configuration, connect a computer via an Ethernet cable to the LAN port of your router. Enter the router's IP address on the browser.

It will prompt you to the site of your internet-providing party. Give the credentials mentioned on your router, then under the "Wireless" section in the router's settings, update the name of your network in the "SSID" field.

For securing your wireless connection, enable "WPA-2 Personal" as the security or authentication option. Under "Pre-shared key," generate your password to enable the wireless network and then save the settings.

LAN Diagram Examples

In this section, our concepts about the LAN will be more concrete as we are going to see some practical examples of local area networks.

Example 1: Home Network Diagram

Home Network Diagram

It is the illustration of the home local area network in this diagram. All the devices like printer, fax machine, and computers are connected with the main switch. Then this switch is connected with the modem for the internet connection. Further, the firewalls are protecting the whole network from malicious activities.

Example 2: Ethernet LAN Diagram

Ethernet LAN Diagram

In the above illustration, the local area network of the ethernet connection is shown. All the departments containing dozens of devices are connected with the single ethernet connection in the above activity. The server, printers’ departments containing multiple of them are also connected with the ethernet.

Example 3: Ethernet LAN Diagram For Office

Ethernet LAN Diagram For Office

The above illustration is of the office network connection through the ethernet connection. All the devices are connected with a single router for wireless connection and then connected with the ethernet to connect with the other networks.

Example 4: Ethernet LAN Protocol

Ethernet LAN Protocol

All the departments containing devices are connected with a single ethernet connection. The server, printers’ departments containing multiple of them are also connected with the ethernet.

Example 5: Port LAN Switch Network

Port LAN Switch Network

The above illustration is of the vast LAN network that contains multiple departments, wireless connections, utilities like printers, and they are also connected with the 3G connection. All these devices are connected with a port LAN switch.

LAN Diagram Software

A network connecting computers in a relatively small area such as a building. A Local Area Network (LAN) delivers applications to local users, and provides the infrastructure for group collaboration, file sharing and transfer, printing and the rest of the user experience. Our LAN designs take into account the needs for resilience, security, Quality of service and scalability.

Edraw Network Diagram software

Edraw Network Diagram is ideal for network engineers and network designers who need to draw LAN diagrams. It had defined some commonly used LAN diagram symbols in drawing LAN diagrams. Just drag and drop pre-drawn shapes representing computers and network devices. Double click and set equipment data.

LAN Diagram Symbols

Computers and Monitors in Lan Diagrams

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