Archer AX-20 can't negotiate 1Gbps with another Archer AX-20

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Archer AX-20 can't negotiate 1Gbps with another Archer AX-20

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Archer AX-20 can't negotiate 1Gbps with another Archer AX-20
Archer AX-20 can't negotiate 1Gbps with another Archer AX-20
2023-01-05 20:36:03 - last edited 2023-01-06 06:27:37
Model: Archer AX20  
Hardware Version: V2
Firmware Version: 2.1.6 Build 20220128 rel.15823(4555)

I'm currently trying to upgrade my tp-link N600 to an Archer AX-20. 

From what I see, the AX-20 can't negotiate a 1Gbps with another AX-20. 

 

Here's my setup: 

When I'm connecting the Archer AX-20(1) to the N600 (with the same cables), the laptop is getting 270Mbps (using the speed test of fast.com). 

Looking at the management console of AX-20(1), I see this (when connecting the N600): 

(LAN 3 shows 1000Mbps)

 

However, When I connect the other (new) AX-20 (marked at number 2), I get the following in the AX-20(1) management console:

(LAN 3 shows 100Mbps).

 

From the UI of AX-20 (2), I see this: 

I see that 'Internet' is set to 100Mbps. Internet, here, is the link to AX-20(1).

This means (to me) that AX-20(2) can't negotiate a 1Gbps speed with AX-20(1), so I tried changing that. I manually set the negotiation speed to be 1Gbps (in AX-20(2)):

 

But, something doesn't work when I do that: 

I'm not getting any connection from AX-20(2) to AX-20(1). 

 

I've tried upgrading the firmware, resetting the router - and even replacing AX-20(2) to another router in the store, but still - I can't get AX-20(2) to negotiate 1Gbps with AX-20(1). 

 

Any tips? 

 

Thanks. 

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#1
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Re:Archer AX-20 can't negotiate 1Gbps with another Archer AX-20
2023-01-06 00:27:51 - last edited 2023-01-06 08:29:53

  @BugoK 

 

Have you tried to replace the ethernet cable between the two routers with another good one of Cat 5e or Cat 6 ? Usually these in the router kit are proven to be of a good quality.

If you could bring AX20(2) closer to AX20(1) and connect them with the cable from the kit, would be a quick good test.

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#2
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Re:Archer AX-20 can't negotiate 1Gbps with another Archer AX-20
2023-01-06 06:20:46

  @terziyski: No, I haven't. Maybe worth a shot - but that cable is going underneath the floor - so it'll be hard to replace. 

Although, since the N600 router can get 1000Mbps, I imagine that it's not the cable. But maybe I'm missing something here...

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#3
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Re:Archer AX-20 can't negotiate 1Gbps with another Archer AX-20
2023-01-06 07:03:59

@BugoK 

 

I would have the same suggestion as provided by terziyski already. Please try to replace the Ethernet cable between the two routers with another good Cat 5e or Cat 6 cable if that is possible. Even though the first AX20 can negotiate at 1000Mbps with the older N600, there is also a possibility that the AX20 and the N600 have different requirements for the cable quality. It's worthy to try with a new cable.

 

Meanwhile, can I know what is the distance between the two routers? In another word, how long is the cable between them? Are them locating in different building or just in different room but in the same building?

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#4
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Re:Archer AX-20 can't negotiate 1Gbps with another Archer AX-20
2023-01-07 06:52:15

  @Kevin_Z : I've tried replacing the cable between the two routers - and I am able to get a 1Gbps, so yes, it's probably the cable. I still don't understand how the same cable can work with one router and can't work with another. 

In terms of distance - the cable which is connecting the two routers is running under the floor across two rooms, so I'd say something like 10-15 meters.

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