Hello,

 

I am experiencing a repeated issue with the TP-Link Archer BE3600 / BE230. This is already the second unit with exactly the same behavior.

 

Model: Archer BE3600 / BE230

Firmware: 1.1.0 Build 20250718 rel.16043(4555)

Hardware: Archer BE230 v2.0

Connection type: Dynamic IP with MAC binding

Issue: WAN port does not establish a link with the ISP line at any speed except 100 Mbps

 

Description of the problem:

 

When connecting the ISP’s Ethernet cable directly to the WAN port of the Archer BE3600/BE230, the router cannot establish a 1 Gbps or 2.5 Gbps link.

 

– On Auto (Auto-Negotiation), the WAN LED does not turn on and no link is established.

– If I manually set the WAN speed to 1000 Mbps or 2500 Mbps, the link also does not come up (WAN LED stays off).

– Only when I manually force the WAN port to 100 Mbps does the link become active, and the router successfully receives an IP address and has internet access.

 

At the same time, my old router (SNR CPE ME2 Lite) establishes a stable 1000 Mbps link with the same ISP cable without any issues.

 

Furthermore, the Archer BE3600/BE230 is able to establish a stable 1000 Mbps link when connected to my old router (old router LAN → new router WAN). In this scenario, it immediately receives an IP address and works normally. This confirms that the WAN port itself is capable of 1 Gbps, but it cannot negotiate a 1 Gbps link with the ISP’s equipment.

 

To summarize:

 

– Two different Archer BE3600 / BE230 units show identical behavior.

– The ISP line supports 1 Gbps and was tested by their support.

– The old router consistently negotiates 1 Gbps with the same cable.

– The Archer BE3600/BE230 negotiates 1 Gbps only when connected to another home router, not directly to the ISP line.

– Changing cables does not help.

– Resetting the router does not help.

– Manually forcing 100 Mbps works and internet is available.

– Forcing 1000 Mbps or using Auto results in no link (WAN LED is off).

 

The ISP confirmed that their line is fully functional, supports 1 Gbps, and that speeds greater than 100 Mbps reach my apartment.

 

I would like to know:

 

1. Could it be a problem with an ISP's line?

2. Is this a known issue with the BE3600 / BE230 series?

3. Could this be related to the firmware, and can it be fixed?

 

 

Thank you.