When only one or two industrial routers are being deployed, configuring each device manually is usually manageable. But once the same type of equipment needs to be installed across multiple factories, cabinets, remote sites, or even different cities, a more practical question appears:
Which settings should stay consistent, and which settings must be changed for each site?
This is the first issue manufacturers should address when building standard configuration templates for a 5G cellular router.
A useful configuration template is not simply a copy of the settings from the first router. A better approach is to separate the configuration into two parts:standard baseline settingsandsite-specific variables.
For example, VPN type, firewall policies, and failover logic can usually be standardized, while LAN addresses, APN settings, SIM information, and device names often need to be adjusted for each site.
This should be the baseline configuration inherited by all routers.
At minimum, it is useful to standardize:
For example, device names can follow a fixed structure such as:
Region – Factory – Device ID
LAN subnets can also be assigned according to site numbers.
With a consistent naming and addressing system, engineers can quickly identify which site a router belongs to simply from its hostname or IP address, instead of checking installation records every time troubleshooting is required.
For a 5G cellular router, cellular network settings should usually be managed as a separate template.
The main items to standardize include:
Network mode, APN configuration method, primary and backup SIM strategy, reconnection behavior, and cellular network priority.
However, APN parameters should not always be hard-coded into one template.
If different sites use different mobile operators or private APNs, settings such as APN, username, and password should be treated as site-specific variables and entered during deployment.
If the router supports dual SIM cards, the template should also define:
Which SIM is the primary connection?
When should the router switch to the backup SIM?
Should it automatically switch back when the primary network recovers?
Without a standard rule, devices from the same deployment may end up using different SIM priorities or backup behaviors, making later troubleshooting more difficult.
Industrial networks should not only consider whether a router can connect to the Internet. They should also consider what happens when the primary connection fails.
For this reason, a dedicated link redundancy template is useful.
For example:
Wired WAN → 5G → Backup SIM
or:
5G → Wired WAN
The actual priority depends on the application, but sites with the same network architecture should normally follow the same policy.
The template should define:
For example, the PUSR USR-G816 supports cellular, wired, and Wi-Fi networking, together with WAN Failover and dual-SIM backup. This allows manufacturers to define link priorities and backup logic before routers are deployed across multiple sites.
Remote factories, equipment cabinets, and unattended sites often need secure connectivity to a central server or control platform.
VPN settings should therefore not be configured differently by each field engineer.
A standard security template can define:
However, certificates, keys, and site-specific VPN accounts should not simply be duplicated across every router. These values should be managed separately as deployment variables.
USR-G816 supports several VPN technologies, including OpenVPN, IPsec, PPTP, L2TP, and GRE. It also provides functions such as access control, DMZ, port forwarding, and IP, MAC, and domain filtering.
These settings are suitable candidates for a standardized security baseline.
An industrial router usually connects to more than the Internet.
Behind the router there may be PLCs, meters, controllers, cameras, serial devices, or other industrial equipment.
The template should therefore also define how local devices connect to the network.
For example:
Which LAN port should the PLC use?
Which subnet should the cameras use?
What baud rate and parity should RS485 devices use?
Should serial data be transmitted transparently or converted between protocols?
USR-G816 provides Gigabit Ethernet ports as well as RS232 and RS485 interfaces. It supports serial transparent transmission and Modbus RTU-to-Modbus TCP gateway functions.
For projects where device types and connection methods are relatively consistent, these parameters can also be included in a standard device-access template.
Remote management is often overlooked during initial deployment, but it becomes increasingly important as the number of routers grows.
It is useful to standardize:
USR-G816 supports management through its Web UI and PUSR Cloud, together with remote alarms for device offline status, weak signal conditions, and abnormal data usage.
These capabilities can become part of a broader management standard for large-scale router deployments.
In practice, it is often better to divide router configuration into three layers.
Layer 1: Basic Template
Account settings, time synchronization, DNS, security policies, and other settings shared by all routers.
Layer 2: Application Template
For example, 5G as the primary connection, 5G as the backup connection, VPN access, or serial device connectivity.
Layer 3: Site Variables
Device name, LAN IP address, APN, SIM information, VPN account, and site ID.
With this structure, adding a new site does not require configuring every router from scratch.
The engineer only needs to select the correct application template and enter a small number of site-specific parameters.
For manufacturers evaluating a 5G cellular router, it is therefore worth looking beyond peak cellular speed and the number of physical interfaces.
Support for multi-link failover, VPN, security policies, remote management, and standardized deployment can have a significant impact on how easily dozens or even hundreds of routers can be maintained later.
A good configuration template does not mean that every router must use exactly the same parameters.
The goal is simpler:
Keep the settings that should be consistent standardized, while clearly separating the parameters that must change from one site to another.
That is the foundation of a scalable industrial network deployment.
