Using a Wi-Fi Router as an Access Point: Setup Guide

When a wireless access point stops working, replacing it with another dedicated access point is not always the only option. Depending on the network requirements and device capabilities, an existing Wi-Fi router may also be configured to provide wireless access to the same network.

A wireless router and an access point perform different functions. A router manages network traffic between networks, while an access point allows wireless devices to connect to an existing wired network. However, many wireless routers include an Access Point (AP) mode that allows them to perform this function.

Business Communication Solutions (BCS) has handled a customer troubleshooting situation involving a non-functional access point. Instead of purchasing a new access point, the customer used an existing Linksys Wi-Fi router. BCS configured the router to operate as an access point and assigned it an unused static IP address in the existing network.

This guide explains the difference between routers and access points, how a router can be used as an access point, the important network settings to check, and when a dedicated access point may be a better choice.

1. What Is the Difference Between a Router and an Access Point?

Although wireless routers and access points can both provide Wi-Fi connectivity, their primary functions are different.

Understanding these differences is important before deciding whether an existing router can replace a failed access point.

What Does a Router Do?

A router connects different networks and manages how data moves between them.

In a typical small business or home network, a wireless router may perform several functions:

Connect the local network to the internet.
Assign IP addresses to connected devices through DHCP.
Route traffic between networks.
Perform Network Address Translation (NAT).
Provide firewall and network security features.
Broadcast a wireless network when Wi-Fi is enabled.

These functions allow a router to manage communication between the local network and external networks.

What Does an Access Point Do?

An Access Point (AP) provides wireless connectivity to devices and connects them to an existing wired network.

For example, a business may have a main router connected to the internet and several access points installed throughout its office.

Employees can connect their laptops, smartphones, and other wireless devices to these access points to access the network.

An access point generally does not need to perform the same routing, NAT, and DHCP functions as the main router.

Router vs Access Point: Key Differences

Feature	Wireless Router	Access Point
Main function	Connects and manages networks	Provides wireless network access
Routing	Usually supported	Not normally its primary function
DHCP	Commonly provides DHCP services	Usually receives network configuration from an existing DHCP server
NAT	Commonly supported in router mode	Generally not used in standard AP operation
Wireless connectivity	Usually supported	Supported
Typical use	Main network gateway	Extending wireless access

The exact features depend on the device and its operating mode.

2. Can You Use a Wi-Fi Router as an Access Point?

Yes. Many wireless routers can operate as access points if the manufacturer supports an AP mode or an appropriate bridge configuration.

In this arrangement, the existing primary router continues managing the network, while the secondary router provides wireless connectivity to devices in another area.

For example, consider a small business with an existing network:

The primary router provides internet connectivity and manages IP addressing.
An Ethernet cable connects the secondary router to the existing network.
The secondary router operates in Access Point mode.
Wireless devices connect through the secondary device.

This arrangement can be useful when an existing access point fails or when additional wireless coverage is required.

When Is This Setup Appropriate?

Using a router as an access point may be suitable when:

The router supports Access Point mode.
A wired Ethernet connection is available.
The existing network has a functioning primary router.
The device supports the required wireless standards.
The network administrator can configure the necessary IP and wireless settings.

However, not every router supports dedicated AP mode. Some devices require manual configuration, while others may not be suitable for this purpose.

Always check the manufacturer’s documentation for the specific router model.

3. How to Configure a Router as an Access Point

The configuration process depends on the router manufacturer and model.

Some devices provide a dedicated Access Point mode, while others require manual configuration.

The following is a general guide, not a model-specific configuration procedure.

Step 1: Check Router Compatibility

Before making changes, confirm whether the router supports:

Access Point mode.
Bridge mode that disables routing functions.
Ethernet connectivity to the existing network.
Appropriate wireless security settings.

Check the manufacturer’s documentation before proceeding.

Step 2: Connect to the Router’s Administration Interface

Connect a computer to the router and access its administration interface through a web browser.

The login address and credentials depend on the router model and its existing configuration.

Before changing settings, record the current configuration so you can restore it if necessary.

Step 3: Select Access Point or Bridge Mode

If the router has a dedicated Access Point mode, select that option and follow the manufacturer’s setup instructions.

Depending on the device, this mode may automatically disable functions such as NAT, DHCP, and routing.

If the router does not have a dedicated AP mode, manual configuration may be required. This should only be performed after checking the device’s documentation and understanding the existing network configuration.

Step 4: Assign an Appropriate Management IP Address

The access point needs an IP address that allows administrators to access its management interface.

This address should belong to the correct network subnet and should not conflict with another device.

For example, if the existing network uses the 192.168.1.x subnet, the secondary device may use an unused address within that subnet, provided the address is outside the active DHCP allocation range or properly reserved.

The exact address depends on the network’s IP addressing plan.

Step 5: Review DHCP and Routing Settings

In a standard access point arrangement, the primary router or another designated DHCP server normally assigns IP addresses to connected devices.

If the secondary router is configured manually rather than through a dedicated AP mode, its DHCP server and other routing functions may need to be disabled.

Do not disable these services blindly. First confirm that the device is not responsible for providing DHCP or routing to another network segment.

Step 6: Configure Wireless Settings

Configure the wireless network according to the business requirements.

Review:

Wireless network name (SSID).
Authentication and encryption settings.
Wi-Fi password.
Supported frequency bands.
Channel selection.
Transmit power, where configurable.

If the secondary access point is intended to provide access to the same wireless network, its settings should be planned accordingly.

Step 7: Test Network Connectivity

After configuration, connect a wireless device and check whether it can:

Join the wireless network.
Obtain the correct IP address.
Reach the default gateway.
Access required local network resources.
Connect to the internet.

Also verify that the access point’s management interface remains accessible.

Testing helps identify configuration issues before the device is put into regular use.

4. Important Network Settings to Check

Using a router as an access point requires more than connecting an Ethernet cable and enabling Wi-Fi.

Several network settings should be reviewed to avoid conflicts and connectivity problems.

Static IP Address

A static management IP address can make it easier to locate and administer the access point.

Before assigning one, check the existing network’s:

IP address range.
Subnet mask.
Default gateway.
DHCP allocation range.
Existing static IP assignments.

An address already used by another device can create an IP conflict.

DHCP Configuration

DHCP automatically assigns IP configuration to network devices.

In a typical network with one primary router, that router or another designated DHCP server should manage address allocation.

If a secondary router continues running its own DHCP server when it should be operating as an access point, devices may receive conflicting or incorrect network settings.

Ethernet Connection

A wired connection between the main network and the secondary access point is generally preferable for a standard wired AP arrangement.

Check the correct Ethernet ports and follow the manufacturer’s instructions. Some devices use a dedicated WAN/Internet port in AP mode, while others use LAN ports.

Do not assume that every router uses the same connection method.

Wireless Security

Wireless security should be configured using supported, current security options.

Use a strong Wi-Fi password and avoid outdated or insecure encryption methods.

Businesses should also review guest access and employee network requirements before enabling wireless connectivity.

Network Coverage

Adding another access point does not automatically guarantee better Wi-Fi coverage.

Coverage depends on several factors, including:

Building layout.
Wall and floor materials.
Distance between access points.
Wireless interference.
Device placement.
Supported Wi-Fi standards.

The access point should be positioned and configured according to the actual wireless environment.

5. BCS Network Troubleshooting Example: Using a Linksys Router as an Access Point

BCS has previously assisted a customer whose existing wireless access point was no longer functioning.

The customer did not want to purchase another access point immediately. Instead, the customer had an existing Linksys Wi-Fi router that could potentially be used for the same purpose.

BCS proceeded with the alternative setup.

The router was configured to operate as an access point and assigned an unused static IP address within the existing network.

The objective was to use the available router to restore wireless connectivity in the affected area.

This example demonstrates that an existing wireless router may provide a practical alternative to purchasing a separate access point, provided the device supports the required configuration.

It is important to evaluate each network individually. The suitability of this approach depends on router capabilities, network topology, wireless requirements, and available connectivity.

6. Benefits and Limitations of Using a Router as an Access Point

Using an existing router as an access point can be useful, but it is not the right solution for every network.

Potential Benefits

Reuse Existing Equipment

A compatible router that is already available may be used instead of purchasing another device.

Additional Wireless Connectivity

A properly configured router can provide wireless access in an area where the existing access point is unavailable or insufficient.

Integration With an Existing Network

When configured correctly, the secondary device can connect wireless clients to the existing network rather than creating an unnecessary separate routed network.

Flexible Deployment

Some routers offer operating modes that make them suitable for different network arrangements.

Important Limitations

Not Every Router Supports AP Mode

Some routers have limited operating modes or require configuration that may not be suitable for every network.

Wireless Performance Depends on the Device

The router’s supported Wi-Fi standards, radio capabilities, and hardware determine its wireless performance.

Incorrect Configuration Can Cause Network Problems

Competing DHCP servers, IP address conflicts, and unintended routing can disrupt connectivity.

It May Not Provide Enterprise Wireless Features

A consumer wireless router may not offer centralized management, advanced roaming controls, or other features required in larger business networks.

The decision should be based on the actual network requirements rather than simply whether an extra router is available.

7. When Should You Use a Dedicated Access Point?

A dedicated access point may be a better choice when the business needs more than basic wireless connectivity.

Consider a dedicated AP when:

Multiple wireless access points are required.
The business needs centralized wireless management.
Wireless coverage must be planned across a larger building.
Multiple users and devices require consistent connectivity.
The network needs advanced wireless management features.
The existing router does not support the required AP configuration.

For larger offices and commercial environments, wireless network planning should consider access point placement, channel selection, interference, capacity, and the number of connected devices.

A dedicated access point is not automatically better in every situation, but it may be more appropriate when the network requires features beyond those available on a consumer router.

8. Frequently Asked Questions

1. Can I use a normal Wi-Fi router as an access point?

Yes, if the router supports Access Point mode or can be configured appropriately. The exact setup depends on the manufacturer and model.

2. Do I need to disable DHCP when using a router as an access point?

In a typical AP setup, the primary router or designated DHCP server handles IP address allocation. If the secondary router’s AP mode automatically manages these settings, follow the manufacturer’s instructions. Manual configurations may require disabling its DHCP server.

3. Should an access point have a static IP address?

A static management IP can make the device easier to administer. However, it must be an unused address within the correct network configuration. A DHCP reservation is another possible option.

4. Can I connect a router to another router using an Ethernet cable?

Yes. A secondary router can connect to an existing network using Ethernet and operate in AP mode, provided the device supports the required configuration and the correct ports are used.

5. Will using a router as an access point improve Wi-Fi coverage?

It may extend wireless availability into an area that needs coverage. However, the actual result depends on device placement, wireless interference, building materials, equipment capabilities, and network configuration.

6. What happens if two routers provide DHCP on the same network?

If both devices independently assign addresses on the same network, clients may receive conflicting or incorrect network settings. This can cause connectivity problems. A typical AP arrangement should use one designated DHCP service for that network.

7. Is a dedicated access point better than a Wi-Fi router?

It depends on the requirements. A dedicated access point may be more suitable for larger networks, centralized management, and advanced wireless features. A compatible router can be a practical alternative for simpler requirements.

Need Help With Your Business Wi-Fi Network?

Choosing between a wireless router and a dedicated access point depends on the existing network, the building layout, the number of users, and the required wireless features.

Incorrect configuration can create DHCP conflicts, IP address problems, and unreliable connectivity.

Business Communication Solutions helps businesses evaluate network and connectivity requirements.

Explore Computer and Network Services and Managed IT Services to learn more about BCS support options.

If you are troubleshooting an access point or planning additional wireless coverage, contact BCS to discuss your network requirements.