@higfield 

How about using EX820v ethernet port LAN1-LAN3 ? What't the bandwidth in this case ?

Try using another ethernet cable like the one in EX820v kit. CAT5E cable would suffice as well.

Hello @higfield ,

Welcome to our community.

EX820v is a customized device specifically designed for local Service Providers. Its software is tailored to meet the unique requirements of these providers, ensuring alignment with their specific needs. Due to the specialized nature of the firmware on your device, our ability to provide troubleshooting may be limited.

We can certainly offer some troubleshooting tips that may help resolve your issue. Please consider the following:

1. Verify Ethernet Cable and Port:
• Even though you're using a Cat6 cable, try using a different Cat5E or Cat6 cable to rule out a cable issue.
• Try connecting to a different LAN port on the router to see if the issue persists.

2. Check Port Negotiation Speed:
• Log in to the router's web management page at https://tplinkwifi.net
• Go to Network Map, click the Router icon, and scroll down to "Ethernet Status" to verify the current negotiated speed between your laptop and the router. It should show 1Gbps if your laptop's Ethernet port supports it.

3. Disable QoS:
• Log in to the web interface at http://tplinkwifi.net
• Go to Advanced > QoS and make sure QoS is disabled, as this feature can affect Ethernet performance.
 

If the problem persists after trying these steps, we recommend contacting your Service Provider who supplied the device or local support, as they are best suited to provide the necessary assistance for your device.