In most workplaces, a Local Area Network, or LAN, is the standard choice. With this setup, computers, printers, servers, and other devices connect within a limited space. This space is usually one building or one floor. Because the distance is short, data moves quickly between devices. In addition, this setup helps protect company files during sharing.
To function correctly, LAN relies on ethernet cables, switches, and routers. Along with this, a network administrator controls access from one central point. Through this control, the administrator also monitors network activity. Because data stays inside the office, many companies prefer LAN systems. This trend is clear in market data, as an IDC report from 2025 shows global ethernet switch revenue reached $14.7 billion in the third quarter of 2025.
What are the four types of LAN?
LAN systems come in four main types, including ethernet LAN, wireless LAN, token ring LAN, and fiber distributed data interface. Each of these office network cabling types serve different office needs. To understand it more, below are the details.
- Ethernet LAN: With physical cables, devices connect through switches and routers. Because of its stability, many offices depend on this type. As a result, it remains common for speeds up to 100 Gbps.
- Wireless LAN (WLAN): In contrast, this type connects devices through Wi-Fi access points without office network cabling. As a benefit, employees can walk around the office and stay connected to the network.
- Token Ring LAN: In this system, data moves by passing a digital token between devices. However, most modern offices no longer use it.
- Fiber Distributed Data Interface (FDDI): By using fiber optic cables, this type supports fast connections over longer distances. Because of this, large companies with multiple buildings often choose it.
Depending on office size and budget, each LAN type offers different benefits. Even so, Ethernet LAN remains the most common option for small and medium businesses because it is reliable and cost-effective.
How to connect to the LAN in the office?
To connect to the LAN in the office, you need to plug in an ethernet cable, get an IP address, and log in with your credentials. The office network cabling process follows several simple steps. It begins with:
- Physical connection: By plugging in an ethernet cable, a computer connects to a wall port or network switch. Through this link, data can move between the device and the network.
- Network configuration: Once connected, the office network cabling allows the computer to request an IP address from the DHCP server. In response, the server assigns a unique address. This step usually completes within seconds.
- Authentication: After receiving access, the user enters a username and password. At this point, the system checks permissions before allowing network use.
In many modern offices, these steps run automatically. Because of centralized systems, employees only need to connect and log in. Meanwhile, IT teams handle technical settings in the background.
Building better office networks
In today’s workplaces, office network cabling supports daily communication. With a clear understanding of LAN and WAN, businesses can select suitable network structures. By knowing the different LAN types, companies can plan based on office size and budget. Through proper connection methods, employees gain secure and reliable access.
When quality cabling is in place, technical problems decrease and productivity improves. Along with this, dark fiber solutions offer private bandwidth without sharing capacity. Because this bandwidth is dedicated, speeds stay stable and security improves.
To support these needs, ARNet provides dark fiber infrastructure for office network cabling. Through private fiber connections, businesses gain full control over speed and security. With reduced congestion, companies can increase bandwidth as they grow without service interruptions.
About the Author
Nabila Choirunnisa, Digital Marketing Executive at ARNet