Yes, you can connect two routers to one modem, and it's a common setup
You can run two routers from a single modem. The modem connects to your internet service provider's line and sends that connection to your first router, which then connects to your second router. The second router can extend your network's range, create a separate network for guests, or handle overflow traffic from devices in different parts of your home.
The method you use depends on what you want the second router to do. If you want both routers to broadcast the same network name and password, you'll set up the second router as an access point. If you want a separate network, you'll leave it in router mode. Both work from one modem, but they behave differently.
Key Takeaways
- Your modem connects to the internet; your first router connects to the modem and broadcasts your network; your second router connects to the first router either by ethernet cable or wirelessly.
- In access point mode, the second router extends your existing network under the same name and password, and devices switch between routers automatically.
- In router mode, the second router creates a separate network with its own name and password, and you choose which one to connect to.
- An ethernet cable between routers is faster and more stable than a wireless connection, but wireless works if running cable is not practical.
- You do not need to change your modem settings; the modem sees only your first router, not the second one.
Access point mode: extending one network across your home
Setting the second router as an access point means it broadcasts the same network name and password as your first router. Devices see one seamless network and move between the two routers as you walk around your home. This is the simpler setup for most people because you log in once and stay connected.
To set this up, connect the second router to the first router using an ethernet cable (from any port on the second router to any port on the first router — not the internet port). Then log into the second router's settings, find the mode or operation setting, and switch it from router mode to access point mode. The second router will now repeat your first router's network name and password.
If you want to use a wireless connection instead of a cable, most routers have a wireless bridge or repeater mode. This is slower than ethernet because the router has to send and receive on the same radio at the same time, but it works if you cannot run a cable. Check your router's manual for the exact name of this setting — it varies by brand.
Router mode: creating a separate network
Leaving the second router in router mode creates a completely separate network with its own name and password. This is useful if you want a guest network that does not have access to your main devices, or if you want to isolate work devices from personal ones.
Connect the second router to the first router with an ethernet cable (again, to any regular port, not the internet port). The second router will automatically detect that it is connected to another network and will assign itself a different IP address range. You can then log in, change the network name and password, and use it as a standalone network.
Devices on the second router's network cannot see devices on the first router's network unless you manually configure port forwarding or bridge the networks. For most home setups, this separation is a feature, not a problem.
Ethernet cable versus wireless connection
An ethernet cable between the two routers is always faster and more stable. Data travels at the full speed your routers support, and there is no interference from other wireless devices. If you are setting up the second router in a room close to the first, or if you can run a cable through walls or along baseboards, use ethernet.
Wireless connection (bridge or repeater mode) works when running a cable is not practical. The second router picks up your first router's signal and rebroadcasts it. You lose some speed because the router is using the same radio to receive and transmit, but the network still functions. Expect 30 to 50 percent less speed than ethernet, depending on distance and interference.
If you choose wireless, place the second router halfway between your first router and the area you want to cover. Too close to the first router and you waste coverage; too far away and the signal is weak.
What your modem does not need to change
Your modem does not care how many routers are connected to it. The modem sees only your first router. It sends internet traffic to that router, and the router decides where to send it next. You do not need to log into your modem, change any settings, or tell it about the second router.
The only exception is if your modem has a built-in router. Many internet service providers issue combination modem-router units. If yours is one, you can still add a second router — just connect it to the modem-router the same way you would connect it to a standalone router.
Speed and performance with two routers
Adding a second router does not increase your overall internet speed. Your modem receives data from your internet service provider at a fixed rate — usually 100 Mbps to 1 Gbps, depending on your plan. Both routers share that same pipe.
What a second router does improve is coverage and device capacity. If your first router's signal does not reach the far end of your home, a second router in access point mode fills that gap. If you have many devices and your first router is struggling, a second router in router mode splits the load.
If you connect the routers with ethernet, performance is better than wireless because no bandwidth is lost to the connection between them. If you use wireless bridge mode, expect some slowdown in the area around the second router because it is using part of its radio to talk to the first router.
Choosing between access point and router mode
Use access point mode if you want seamless coverage across your home. Devices automatically pick the stronger signal as you move around, and you manage one network. This is best for homes where you want reliable wifi everywhere without thinking about which router to connect to.
Use router mode if you want separate networks. This is best for guest networks, work-from-home setups where you want isolation, or situations where you need different security rules on different networks. You manage two networks separately, and devices do not move between them automatically.
Some routers support both at the same time — you can set one band (like 2.4 GHz) to access point mode and another band (like 5 GHz) to router mode. Check your router's manual to see if this is an option.
Frequently Asked Questions
Do I need to restart my modem when I add a second router?
No. Your modem does not know a second router exists. You may need to restart your first router after connecting the second one, depending on the model, but the modem itself does not need to change. If you experience connection problems, restart the first router, then the second router, then wait a few minutes for them to sync.
Can I connect two routers with a wireless connection instead of ethernet?
Yes, most routers support wireless bridge or repeater mode. This is slower than ethernet because the router uses the same radio to receive and transmit, but it works if running a cable is not practical. Place the second router between the first router and the area you want to cover for the best signal.
Will two routers slow down my internet?
No, they will not slow your overall internet speed. Your modem's speed is fixed by your service plan. Two routers share that same connection. If you connect them with ethernet, there is no speed loss. If you use wireless bridge mode, the area around the second router may be slower because the router is using part of its radio for the connection between routers.
What if my second router keeps disconnecting from the first one?
Check that the ethernet cable is fully seated in both routers, or if using wireless, move the second router closer to the first one. Make sure the second router is set to access point or bridge mode, not router mode. Restart both routers and wait a few minutes for them to reconnect. If the problem continues, check your router's manual for firmware updates.
Can devices on my second router see devices on my first router?
In access point mode, yes — they are the same network. In router mode, no — they are separate networks and cannot see each other unless you manually set up port forwarding. For most home setups, this separation is intentional and useful, especially for guest networks.