How to Add Two IP Address Segments and Modify the IP Address of the LAN Port on 4g Cellular Router

In the vast field of IIoT, the complexity and flexibility of network architecture are the keys to ensuring efficient operation of the system. For traditional industries, with the deepening of intelligent transformation, how to flexibly configure the network on 4g cellular routers, especially adding multiple IP address segments and modifying the IP address of the LAN port, has become an important and challenging task.

I. Understanding The Requirement: Why Is It Necessary to Add Two IP Address Segments and Modify The IP Address of The Lan Port

In industrial environments, with the proliferation of devices and the diversification of business needs, a single IP address segment often struggles to meet complex network management requirements. Adding multiple IP address segments can achieve network segmentation and isolation, improving network security and manageability. At the same time, modifying the IP address of the LAN port is also a common requirement in network planning and adjustment, especially when it is necessary to expand the network or change the network structure.

Ⅱ. Preparation: Understand the Functions and Support of 4g Cellular Routers

Before making any configuration, it is first necessary to ensure that the selected 4g cellular router supports multiple IP address segments and modification of LAN port IP addresses. Most modern cellular routers have these features, but the specific implementation may vary depending on the brand and model. Therefore, before starting the configuration, it is recommended to carefully read the router's user manual or contact the manufacturer's technical support for accurate information.

III. Steps for Adding Two IP Address Segments and Modifying the IP Address of the LAN Port

1.Log into the router management interface
Use a browser to access the router's management IP address and enter the correct username and password to log in to the management interface. This is the first step in making any configuration changes.

2.Enter the network configuration interface
In the router management interface, find the "Network Configuration" or similar option and enter the interface. This is the main area for adding IP address segments and modifying the IP address of the LAN port.

3.Add a second IP address segment as an option
If the router supports multiple IP address segments, you can find the corresponding option to add it in the network configuration interface. Usually, this involves creating a new subnet interface and assigning it a separate IP address segment. It is important to note that the newly added IP address segment should be coordinated with the existing network plan to avoid IP address conflicts.

4.Modify the IP address of the LAN port
In the network configuration interface, find the LAN port settings option. Usually, this will display information such as the current LAN port's IP address and subnet mask. Modify the LAN port's IP address to a new value as needed. When modifying, ensure that the new IP address is compatible with the existing network plan and does not conflict with the IP addresses of other devices on the network.

5.Configure routing and firewall rules as options
If you add a new IP address segment or modify the IP address of the LAN port, you may need to update the routing and firewall rules to ensure smooth and secure network communication. This includes adding static routes, configuring NAT network address translation rules, and updating firewall policies.

6.Save the configuration and restart the router
After completing all configurations, click the Save button to apply the changes. Then, restart the router according to the router's prompts to make the configuration effective. During the restart process, ensure that all key devices are properly connected and in standby mode.

IV. Advanced Configuration Techniques and Considerations
● Network planning and optimization: Before adding IP address segments and modifying the IP address of the LAN port, it is important to conduct detailed network planning. This includes determining the number of required IP address segments, the size of each address segment, and the interconnection methods between them. At the same time, reasonable network optimization can improve network performance and security.

● Security considerations: During the configuration process, pay special attention to security issues. Ensure that you use strong passwords to protect the router management interface, and regularly update the firmware to fix potential security vulnerabilities. In addition, you can also consider enabling advanced security features such as VPN virtual private networks to protect the security of network communication.

● Multi-router bridging: If a single router cannot meet the network requirements, consider using multiple routers for bridging. With proper bridging configuration, more complex network structures and higher network performance can be achieved. However, this also requires higher technical levels and more complex configuration processes.

In the vast arena of industrial IoT, the configuration and management of 4g cellular routers is a crucial task. By adding multiple IP address segments and modifying advanced configuration techniques such as LAN port IP addresses, flexible network expansion and efficient management can be achieved. As a digital transformation partner in traditional industries, senior engineers should constantly learn and master these key technologies to provide strong support for the intelligent upgrading of enterprises.