LAN architecture of a 4G/5G WiFi CPE router

A 4G/5G WiFi CPE (Customer Premises Equipment) router typically has a LAN (Local Area Network) architecture that allows it to connect and distribute network connectivity to multiple devices within a local area. The LAN architecture of a 4G/5G WiFi CPE router consists of several components and features:

1. WAN Port: The router has a wide area network (WAN) port, usually an Ethernet port, that connects to the 5G network provided by the service provider. This port receives the 5G signal and establishes the internet connection.
2. LAN Ports: The router also has multiple local area network (LAN) ports, usually Ethernet ports, which are used to connect devices such as computers, gaming consoles, smart TVs, etc., to the router. These LAN ports create a wired connection between the router and the devices, allowing them to access the internet.
3. Wireless Connectivity: The 5G WiFi CPE router also provides wireless connectivity, allowing devices to connect to the router without the need for physical Ethernet connections. It typically supports Wi-Fi standards such as 802.11ac or 802.11ax (also known as Wi-Fi 5 or Wi-Fi 6, respectively), providing high-speed wireless connections to compatible devices.
4. DHCP Server: The router acts as a DHCP (Dynamic Host Configuration Protocol) server, assigning IP addresses to devices connected to the LAN. The DHCP server ensures that each device on the network has a unique IP address and can communicate with other devices.
5. NAT (Network Address Translation): The router uses NAT to translate between the local IP addresses assigned to devices on the LAN and the public IP address provided by the internet service provider. This allows multiple devices on the LAN to share a single public IP address.
6. Firewall and Security: The router may have built-in firewall capabilities to protect the LAN from unauthorized access and potential threats from the internet. It may support features like port forwarding, DMZ (Demilitarized Zone), VPN (Virtual Private Network) passthrough, and other security protocols.
7. Quality of Service (QoS): Some 5G WiFi CPE routers include QoS features that prioritize certain types of network traffic. This allows you to allocate bandwidth to specific devices or applications, ensuring smoother performance for activities like streaming video or online gaming.
8. Management Interface: The router typically provides a web-based management interface that allows users to configure and customize various settings, including network security, wireless settings, DHCP settings, and more.