Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro

Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro

Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro
Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro
2025-10-10 08:49:57 - last edited 2025-11-16 13:59:50
Model: Archer AX72 Pro Ā 
Hardware Version:
Firmware Version: 1.60

Hey everyone, hoping someone can help me out! šŸ‘‹

 

I’m with Cuckoo Internet and have a 900 Mb fibre connection. I’ve got my PPPoE username and password, which I’m using with my third-party router (TP-Link Archer AX72 Pro).

 

The weird part is:

 

  • When I use my Eero router, I get the full 900 Mb speed with no issues.
  • When I switch to the TP-Link router, it connects but the speed is much lower 90Mb (or doesn’t seem to handle the full connection properly). 
    via WiFi and Hardwired using brand new Cat6 

 

 

I’ve used this TP-Link router before with other ISPs and never had this issue, so I’m a bit stuck on what might be wrong — could it be something with MTU settings, PPPoE config, or compatibility with Cuckoo’s setup?

 

Any advice, settings tweaks, or similar experiences would be super appreciated! šŸ™

 

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#1
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1 Accepted Solution
Re:Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro-Solution
2025-10-11 06:15:40 - last edited 2025-11-16 13:59:50

Hello@M1GHTYB34R ,

Welcome to our community.

 

When testing the speed of the AX72 Pro, is it connected to the modem directly?

 

Here are some suggestions that may help you:
    1) Try using different Ethernet cables (CAT5E or above) between the router and your PC, and between the router and your modem.
    2) Log in to the web interface of the router (http://tplinkwifi.net), go to Advanced > QoS, and make sure QoS is disabled.
    3) Open the Tether app, go to Parental Control, ensure no parental control profile is configured.
    4) If wireless speed is slower than expected, go to the web interface > Advanced > Wireless Settings to change the 5GHz Wi-Fi channel, test different channels to find the best one for your environment.
    5) Go to the web interface > Advanced > NAT Forwarding > UPNP to disable UPNP, and go to Advanced> Security to disable SIP ALG. These features may affect Wi-Fi performance and speedtest results.

 

Best Regards.

 

 

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#2
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Re:Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro-Solution
2025-10-11 06:15:40 - last edited 2025-11-16 13:59:50

Hello@M1GHTYB34R ,

Welcome to our community.

 

When testing the speed of the AX72 Pro, is it connected to the modem directly?

 

Here are some suggestions that may help you:
    1) Try using different Ethernet cables (CAT5E or above) between the router and your PC, and between the router and your modem.
    2) Log in to the web interface of the router (http://tplinkwifi.net), go to Advanced > QoS, and make sure QoS is disabled.
    3) Open the Tether app, go to Parental Control, ensure no parental control profile is configured.
    4) If wireless speed is slower than expected, go to the web interface > Advanced > Wireless Settings to change the 5GHz Wi-Fi channel, test different channels to find the best one for your environment.
    5) Go to the web interface > Advanced > NAT Forwarding > UPNP to disable UPNP, and go to Advanced> Security to disable SIP ALG. These features may affect Wi-Fi performance and speedtest results.

 

Best Regards.

 

 

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#2
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Re:Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro
a week ago

  @M1GHTYB34R Hi, can you tell me what information you added to router settings except username and password? My router doesn't want to connect to the internet only with user username and password for PPPoE.

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#3
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Re:Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro
a week ago

Hello @rastamarian ,

Who is your Internet Service Provider? Have you tried asking the ISP for the complete network information? 

For some ISPs, the complete network info includes VLAN ID. Please refer to How to configure VLAN ID for your internet connection on wireless router (For new logo)

 

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#4
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Re:Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro
Friday

  @Joseph-TP I'm on the Cuckoo as well. I've contacted Customer Support but they told me to give them the exact information I need, and then they can pass this to the technician.

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#5
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Re:Need Help with PPPoE Connection – Cuckoo Internet + TP-Link Archer AX72 Pro
Tuesday

Hello @rastamarian ,

 

There are several network connection types, such as Dynamic IP, PPPoE, or Static IP.  If there is already a working main router in front of your TP-Link router, you only need to select dynamic IP on the TP-Link router.

To confirm which type you need, please refer to Should I use Dynamic IP or PPPoE? 

As you mentioned, your ISP allows you to set up PPPoE on the router. Then you will get a username and password. 

 

For some ISPs, configuring the Network VLAN ID is also required. This is why you need to confirm complete information with your ISP.

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#6
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