Why this answer matters
A 2.5-Gb/s client plugged into one of the Gigabit LAN ports should negotiate around a 1-Gb/s link ceiling; that does not make the router defective.
2 requirements3 verification steps1 primary source
Requirements
What has to be true
- Use the specifically labeled 2.5-Gb/s WAN/LAN port for the multi-gig path.
- The modem/ONT, cable and client NIC also need to support the target link rate.
Verify it yourself
Use this test sequence
Change one variable at a time so you know which requirement made the difference.
- 1
Confirm the exact model/region and inspect the rear-port labels.
- 2
Check the client OS for negotiated Ethernet link speed.
- 3
Test the same client/cable on the 2.5-Gb/s port before diagnosing internet throughput.
Limits
What this answer does not prove
- Wi-Fi AXE5400 is an aggregate wireless class, not a per-client or Ethernet-port guarantee.
- Real TCP/internet throughput remains below negotiated link rate and depends on the full path.
Relevant DeviceOK checks
Test the part you can observe
Browser Online Status TestCheck the browser online state, available connection hints, and a short round trip to DeviceOK.
→Browser Latency TestMeasure several browser-to-DeviceOK request round trips as a quick connection responsiveness check.
→Network Information CheckRead browser-exposed connection type, estimated round-trip time, downlink, Save-Data state, and online status where supported.
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