How to Increase the Number of Devices Connected to a TP-Link Wi-Fi Router: 7 Working Methods

Modern routers TP-Link Theoretically, they support connecting dozens of devices, but in practice, users encounter limitations: gadgets lose connection, speeds drop, and new devices can't connect at all. The reason lies not only in hardware limitations but also in incorrect network settings. This article will help you figure out how increase the number of connected devices to yours TP-Link without purchasing new equipment.

We will look at how software methods (setting up DHCP, change MTU, channel optimization), and hardware solutions (firmware update, factory reset). We will pay special attention to the following models Archer C6, TL-WR841N And Deco, as their settings have key differences. If your router regularly resets devices or returns an error IP conflict - These recommendations will help solve the problem.

It is important to understand that the maximum number of connections depends on router processor, volume RAM and firmware versions. For example, budget models TP-Link (For example, TL-WR740N) are physically incapable of stably servicing more than 20–25 devices, while flagship Archer AX11000 They easily handle 100+ clients. But even on weaker routers, performance can be improved with the right settings.

1. Checking the current connection limit and diagnosing problems

Before increasing the number of connected devices, you need to understand why the router can't handle the current load. Start with diagnostics:

• 🔍 Check the list of connected devices in the router's web interface (192.168.0.1 or 192.168.1.1). In the menu DHCP → DHCP Clients List All active clients are displayed. If there are more than 30, and the router is slow, the problem lies in hardware limitations.
• 📉 Go to Wireless → Wireless Statistics and look at the channel load. If CPU load exceeds 80% - the router is overloaded.
• ⚡ Run a speed test on connected devices (for example, via SpeedtestIf speed drops when adding new gadgets, optimization is needed.

Please note type of connected devices. For example, smart light bulbs or IP cameras They generate constant traffic, while smartphones and laptops generate sporadic traffic. If the network has many "heavy" clients, even 15-20 devices can overload the router.

⚠️ Attention: On some models TP-Link (For example, TL-WR841N v13) the firmware has a strict limit on the number DHCP clients (usually 32). Exceeding this value leads to failures, even if the router is physically capable of serving more devices.

2. Optimizing DHCP settings: increasing the IP address pool

By default routers TP-Link reserve a limited range IP addresses for distribution (for example, with 192.168.0.100 to 192.168.0.199). If this range is exhausted, new devices will not receive an address and will not connect. The solution is to expand the pool:

1. Go to the router's web interface (192.168.0.1 or 192.168.1.1).
2. Go to Network → DHCP Server.
3. In the field Start IP Address please indicate 192.168.0.10 (or another free address).
4. In the field End IP Address please indicate 192.168.0.240 (maximum for most models).
5. Save settings (Save) and reboot the router.

After the changes, the router will be able to issue up to 230 unique IP addresses (including those reserved for static devices). This will solve the problem of connecting new devices, but will not eliminate lag under high load.

Make sure the new range does not conflict with static IPs|Reboot all connected devices|Check the address assignment via ipconfig /all (Windows) or ifconfig (Linux/Mac)|Track bugs in System Log router-->

If after extending DHCP devices still do not connect, check IP lease time (Lease Time). By default it is 24 hours, but for a network with a large number of clients it is better to reduce it to 12 hours or 6 hoursThis will allow unused addresses to be released more quickly.

3. Changing MTU and packet fragmentation

MTU (Maximum Transmission Unit) — the maximum size of a data packet that can be transmitted without fragmentation. An incorrect MTU value leads to packet loss and reduced network stability, especially with a large number of connected devices. The optimal value for most networks is 1472 or 1500.

To change the MTU on a router TP-Link:

1. Go to Network → WAN.
2. Find the field MTU Size (may be hidden in Advanced Settings).
3. Set value 1472 (recommended for DSL connections) or 1500 (for fiber optics).
4. Save the settings and reboot the router.

After changing the MTU, check the network stability using ping test:

ping -f -l 1472 ya.ru

If no packets are lost, the setup was successful. If a message appears Packet needs to be fragmented but DF set - reduce MTU by 10 units and repeat the test.

⚠️ Attention: On some models TP-Link (For example, Archer C20) Changing the MTU may cause your connection to your ISP to be interrupted. If you lose internet access after saving the settings, reset the value. Auto or check the optimal MTU with your provider's technical support.

4. Firmware update: why it's critical for many devices

The router firmware is responsible for distributing resources among connected devices. Outdated versions often contain bugs that cause the router to "forget" clients or limit their number. For example, in the firmware TP-Link older than 2020 there was a bug with ARP table limit, which caused devices to lose connection after 30–40 connections.

To update the firmware:

1. Download the latest version from official TP-Link website (Please select the exact router model!).
2. Go to the router's web interface and go to System Tools → Firmware Upgrade.
3. Upload the downloaded file and wait for the process to complete (do not turn off the router!).
4. After updating, perform a factory reset (System Tools → Factory Defaults).

Updating the firmware on TP-Link Archer AX50 and newer models automatically increases the limit of connected devices to 64–128, depending on the version. This is due to the optimization of the Linux kernel, which the brand's modern routers run on.

If your router's performance deteriorates after updating (for example, connection drops), perform a factory reset and reconfigure it. This is due to incompatibility between old configurations and the new firmware.

5. Setting up wireless channels: reducing interference

Overloaded Wi-Fi channels — is one of the main reasons for network instability when a large number of devices are connected. If neighboring routers use the same channels, interference occurs, leading to packet loss and disconnections. The optimal solution is to manually select the least congested channel.

How to change the channel on TP-Link:

1. Go to Wireless → Wireless Settings.
2. In the section Channel select Manual.
3. For the range 2.4 GHz recommended channels 1, 6 or 11 (they do not intersect).
4. For 5 GHz select channels with numbers 36, 40, 44 or 48 (depending on your router's support).
5. Save the settings and reboot the router.

To determine the freest channel, use utilities like Wi-Fi Analyzer (Android) or NetSpot (Windows/macOS). They will show the channel load in your region. For example, if a channel 6 5 neighbors use the channel 1 - only 1, choose the last one.

What should I do if my router can't handle 5 GHz even with a large number of devices?

On some models TP-Link (For example, Archer C2) The 5 GHz band is disabled when overheating or under heavy load. Solution:

1. Make sure the router is well ventilated (not in a closed cabinet).

2. In the settings Wireless → 5GHz Reduce the channel width with 80 MHz to 40 MHz or 20 MHz.

3. Disable the function Beamforming, if enabled (may cause conflicts with a large number of clients).

Also check the setting Wireless ModeFor maximum compatibility, please select 11bgn Mixed (for 2.4 GHz) and 11ac/n/a Mixed (for 5 GHz). This will allow devices with different Wi-Fi standards to connect, but may reduce speed slightly.

6. Disable unnecessary features and optimize security

Many router features such as guest access, parental control or QoS, consume processor resources. If you have a large number of connected devices, it's best to disable them or configure them more efficiently.

• 🔒 Turn it off WPS (V Wireless → WPS). This function is vulnerable to hacking and creates additional overhead.
• 🛡️ Replace the encryption type with WPA2-PSK (AES) on WPA3-PSK (if supported). This will reduce the CPU load when authenticating devices.
• 📵 Turn off IGMP Snooping (V Network → IGMP Proxy), if there is no IP-TV on the network.
• 🔄 Deactivate QoS (V Advanced → QoS), if you do not use traffic prioritization.

Pay special attention to the settings DNS. By default, routers TP-Link They use provider DNS, which can slow down when handling a large number of requests. Replace them with public DNS, for example:

• 8.8.8.8 (Google DNS)
• 1.1.1.1 (Cloudflare DNS)

To do this, go to Network → WAN and enter the addresses in the fields Primary DNS And Secondary DNS.

⚠️ Attention: On models TP-Link Deco disabling the function AiProtection (V Advanced → Security) can increase the number of connected devices by 15–20%. However, this will reduce protection against network attacks.

7. Hardware solutions: when software methods don’t help

If all the above methods do not give results, the problem may lie in hardware limitations router. In this case, consider the following options:

• 🔄 Replacing the router to a model with a more powerful processor (for example, TP-Link Archer AX6000 or Deco X60). Budget routers are physically incapable of servicing more than 30–40 devices.
• 🔗 Using the Mesh System (For example, TP-Link Deco). It distributes the load across multiple nodes, increasing the total number of connected devices.
• 📡 Connecting a second router in repeater mode (through WDS or LAN-WAN). This will allow you to divide the network into two subnets and reduce the load on the main router.
• 🖧 Using a switch For wired devices. This will reduce the load on the Wi-Fi network and improve network stability.

If you decide to upgrade your router, pay attention to models that support MU-MIMO And OFDMAThese technologies allow for simultaneous service of multiple devices without loss of speed. For example, TP-Link Archer AX90 supports up to 128 connections thanks to a quad-core processor and 512 MB of RAM.

For offices or large houses, the optimal solution would be TP-Link Omada — a professional line of equipment with support up to 500+ clients per controller. However, such systems require more complex setup.

FAQ: Frequently asked questions about connecting devices to TP-Link

My TP-Link router shows 50 connected devices, but new ones can't connect. What's wrong?

Most likely the limit has been reached DHCP pool or ARP tables. Try:

1. Extend the DHCP range (section 2 of the article).
2. Reduce IP lease time to 6 hours.
3. Update the router firmware.

If this doesn't help, the router is physically unable to handle more devices (a hardware update is required).

After connecting 20 devices, the Wi-Fi starts to slow down. How can I fix it?

The problem is processor overload or interference on the channel. Actions:

• Change your Wi-Fi channel to a less busy one (section 5).
• Disable unnecessary features (QoS, parental controls).
• Divide devices by range: "light" (smartphones, light bulbs) - 2.4 GHz, "heavy" (laptops, TVs) - 5 GHz.

Is it possible to increase the number of devices using firmware from third-party developers (DD-WRT, OpenWRT)?

Theoretically yes, but:

• Third-party firmware removes the limit on the number of clients, but may be unstable.
• On models TP-Link newer than 2018 (eg Archer C5400) installing DD-WRT often results in bricking the router.
• The router warranty will be void.

We recommend trying official methods first (firmware update, settings optimization).

Why do my smart devices (light bulbs, sockets) keep disconnecting from Wi-Fi?

Smart gadgets send constant keep-alive packages, which puts a strain on the router. Solutions:

• Allocate a separate network for them (guest Wi-Fi or VLAN).
• Increase the device polling interval in their settings (if such an option exists).
• Use a router with support IoT optimization (For example, TP-Link Deco M9 Plus).

How do I check the maximum number of devices my TP-Link router supports?

For official information, please refer to the model specifications on the website. TP-LinkPractical tests show:

• Budget models (TL-WR841N, Archer C20) — up to 20–30 devices.
• Middle segment (Archer C6, Deco E4) — up to 50–60 devices.
• Flagships (Archer AX11000, Deco X90) — 100+ devices.

The actual limit depends on the type of devices: 50 smartphones is one load, while 50 IP cameras is quite another.