Every home internet user sooner or later encounters a situation where a new smart device refuses to connect to the wireless network, displaying an "Access Denied" error or endlessly trying to obtain an IP address. Most often, this behavior is caused by exhausting the connection limit set by your router manufacturer. This setting, known as maximum number of WiFi clients, defines the upper limit on the number of devices that can simultaneously operate through the access point.
Many people mistakenly believe that a dual-band router doubles the bandwidth limit, or that purchasing an expensive flagship automatically removes all restrictions. In reality, wireless network architecture is more complex: the channel bandwidth is divided among all participants, and the router's processor hardware resources are limited. Understanding how traffic is distributed and why bottlenecks occur will help you optimize your home network without unnecessary expenses.
In this article, we'll detail the technical aspects of client limiting, the differences between the 2.4 GHz and 5 GHz bands, and provide step-by-step instructions for increasing the limit where possible. You'll learn to distinguish between software limitations in your firmware and the physical capabilities of your hardware and understand when it's time to replace your equipment.
The technical essence of limiting the number of connections
Parameter Maximum Clients or Max Associated Stations — This is a software limitation built into the router's firmware that prevents new IP addresses from being assigned after a certain threshold is reached. The router operates as a DHCP server and has a lease table. When all addresses are occupied, new requests are simply ignored, even if the radio signal is excellent.
However, it's not just about IP addresses. Each connected device generates background traffic of service packets, requiring buffer memory and CPU time for data encryption. If you connect 50 CCTV cameras to a cheap router, it will simply choke on the number of interrupts, even if the internet channel is free. This is why manufacturers install hardware limitsto ensure the stable operation of the main functions.
Why doesn't the router issue an IP address?
When the limit is reached, the DHCP server cannot assign a unique address to a new device. The device remains in the "Obtaining IP Address" status until the timeout expires.
There's also the concept of "active" and "passive" clients. A smartphone in standby mode consumes minimal resources, while a laptop downloading torrents puts a significantly higher load on the network. However, for the connection counter, they are considered equal—each device occupies one "slot" in the association table.
⚠️ Warning: Increasing the maximum number of clients on budget models (with less than 64 MB of RAM) can lead to complete network instability, frequent connection breaks, and freezing of the control interface.
Differences between the 2.4 GHz and 5 GHz bands
Modern dual-band routers often have separate limits for each frequency range. Range 2.4 GHz Longer range, but narrow and noisier. Manufacturers typically set a lower limit on the number of clients on this frequency, as the available bandwidth is lower. Typically, this limit ranges from 15 to 32 devices.
Range 5 GHz It has greater bandwidth and is less susceptible to interference from microwaves and neighboring networks. The limits are often higher here—from 32 to 64 devices or more. However, the 5 GHz signal penetrates walls less effectively, so devices physically located far away may not see the network, even if the limit is not reached.
- 📶 2.4 GHz band: Ideal for IoT devices (light bulbs, sockets) that transmit little data but require a stable connection over a distance.
- 🚀 5 GHz band: Designed for heavy-duty clients like 4K TVs, gaming consoles, and laptops where speed is key.
- ⚖️ Balancing: By intelligently distributing devices across frequencies, you can double the effective throughput of your network.
It is important to note that the function Smart Connect Network name aggregation can sometimes interfere with manual load balancing. If your router supports this feature, it automatically decides where to connect the device, but it doesn't always do so optimally in terms of the number of clients.
How to find out the current limit and number of connections
To determine if you've reached your limit, you need to log into your router's administrative panel. The login address is usually located on a sticker on the bottom of the router's case, most often it's 192.168.0.1 or 192.168.1.1After entering your login and password, look for the section called Wireless, Wi-Fi or Wireless network.
There is often a subsection within the menu Wireless Statistics or Statistics, where a list of current connections (Associated Stations) is displayed. There, in the advanced settings (Advanced Settings), you can find the parameter Max Clients or LimitOn some models, for example, TP-Link or Keenetic, this information may be hidden in the Resource Monitor tab.
If you can't find the exact limit in the interface, refer to the technical documentation for your model. Manufacturers often list this value in specifications under the heading "Maximum Number of Wireless Clients."
| Router brand | Typical limit (2.4 GHz) | Typical limit (5 GHz) | Where to look for the setting |
|---|---|---|---|
| TP-Link | 15-32 | 32-64 | Wireless -> Wireless Settings |
| Keenetic | 32-64 | 64-128 | My Networks and WiFi -> Home Network |
| ASUS | 32 | 64 | Wireless Network -> Professional |
| MikroTik | Depends on the license | Depends on the license | Wireless -> AP Interface |
Instructions for increasing the number of clients
If you've determined that the limit has been reached, the first step should be to change the corresponding parameter in your router settings. This value can't be changed on all models, but it can on most modern devices with manufacturer-specific or alternative firmware (e.g., OpenWrt, DD-WRT) there is such a possibility.
You need to go to the wireless network section, find the field Max Clients (or something similar) and change the value to a higher value. After that, be sure to click the "Save" button or ApplyIn some cases, the router will ask you to reboot to apply the new settings.
☑️ Checklist before changing settings
However, if the network slows down after increasing the number of clients, you've reached the hardware's limits. In this case, increasing the limit software-based is pointless—the router physically can't handle the data packets. In this situation, reducing network load can help: disconnecting unnecessary devices or switching to a guest network.
⚠️ Note: On some firmware versions, the change to the maximum number of clients is reset after rebooting the device unless you press the "Save Settings" button separately from the "Apply Changes" button.
Network optimization for a large number of devices
When more than 20-30 devices (smartphones, tablets, TVs, smart kettles, vacuum cleaners, cameras) appear in a home, even a powerful router can struggle. The key is segmentation. Divide devices into groups: essential (laptops, TVs) and IoT (light bulbs, sensors).
Use a guest network to connect guest gadgets and less important IoT devices. This will not only reduce the load on the main network but also improve security by isolating your smart home from your personal data. It's also worth checking the DHCP lease time. If it's too long (e.g., a week), addresses won't be released even after devices are disconnected.
- 🕒 Reduce Lease Time: Set the address lease time to 2-4 hours instead of the standard 24 hours or a week. This will speed up IP address turnover.
- 📡 Disable old standards: If you don't have devices older than 10 years, force the mode to be enabled
802.11n/ac/ax only, disabling legacy b/g modes. - 🔌 Allocate a separate VLAN: Advanced users can move the entire IoT segment to a separate subnet to prevent broadcast packet storms from cheap Chinese gadgets from disrupting the main channel.
Alternative Solutions: Mesh Systems and Access Points
If your current router can't handle the number of devices, no amount of adjustments will make a significant difference. In the era of smart homes, where the number of gadgets per person exceeds 10, a single router is often insufficient. This is where routers come in. Mesh systems.
A mesh network consists of several modules that create a single, seamless network. Clients are automatically distributed among the modules, which relieves the load on a single central processor. Furthermore, modern mesh systems (for example, from Keenetic, Tenda Nova, TP-Link Deco) have much more powerful hardware and optimized software for working with dozens of connections.
Another option is to use professional access points (Access Point), for example, the series Ubiquiti UniFi or MikroTikThey connect to your main router (which can be converted into a modem) and handle all Wi-Fi distribution. These devices can handle 50-100+ clients without losing stability.
Common problems and their solutions
Users often encounter a situation where the limit appears to be reached, but new devices fail to connect. This may be caused by a DHCP address pool overflow. If there are 254 addresses available in a subnet, but the subnet mask is configured incorrectly or the address pool is artificially narrowed (for example, from 192.168.1.100 to 192.168.1.110), there will be no room for new clients.
Channel interference can also be a problem. If neighboring networks are using the same channel, the router spends up to 80% of its time waiting for the airwaves to clear. In this case, the "maximum number of clients" becomes a secondary factor—the network is choked by noise. Use WiFi analyzer apps to find a free channel.
Sometimes, simply restarting the DHCP server helps. In the admin panel, find the LAN and DHCP settings, temporarily disable the server, save the settings, and then enable it again. This will clear the lease table of "dead souls"—devices that have been disconnected for a long time but are still technically listed.
What to do if your router is constantly losing clients?
If devices are constantly disconnecting, check the router's temperature. Overheating reduces the stability of the radio module. Also, try reducing the transmitter power (Tx Power) to 75% or 50%—this will reduce the coverage area but improve the signal quality near the router and reduce noise.
Does internet speed affect the number of clients?
The provider's speed plan doesn't directly affect the number of connections. The limit depends on the router's processor power and RAM capacity. However, if 30 clients start watching 4K video simultaneously, the 100 Mbps bandwidth will be shared among them, and the speed will drop to zero for everyone, creating the illusion of a connection problem.
Is it possible to connect more than 253 devices?
The standard subnet mask of 255.255.255.0 (/24) allows for 254 addresses (one is reserved for the gateway). To connect more, you need to change the mask to 255.255.0.0 (/16), which theoretically allows for 65,000 addresses. However, no consumer router can handle such a load; this is the domain of corporate equipment.