TP Link AC1900 Archer C9 Vr.3, Maximum speed 93 Mbps

TP Link AC1900 Archer C9 Vr.3, Maximum speed 93 Mbps
TP Link AC1900 Archer C9 Vr.3, Maximum speed 93 Mbps
2020-09-16 22:32:27 - last edited 2020-09-22 03:37:13
Model: Archer C9
Hardware Version: V3
Firmware Version: 1.3.1 Build 20171215 rel.35219(4555)

Team

 

Today I upgraded my internet speed to 250 Mbps, I founded at the router the WIFI speed (using speed test) shows approximatly 90Mbps. I tested the rourther using Ethernet WL and still founded 90Mbps.

I tested the speed at the Modem, founded more than 250mbps.

I tested the speed the TP-Link switches, founded more than 250 mbps.

All my house connection are wired using CAT6 wire.

 

Could not understand why the router not giving me the maximum speed from the Modem.

 

Please can you advise?

 

Best regards

Ahmed

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1 Accepted Solution
Re:TP Link AC1900 Archer C9 Vr.3, Maximum speed 93 Mbps -Solution
2020-09-22 03:37:08 - last edited 2020-09-22 03:37:13

@alaba1 

 

Hi,

 

For the speed issue you encountered, please try the below suggestions and get back to the community with the details if it cannot be solved, thanks.
1. log into the web UI of the Archer C9 and go to the Basic-Network map page, click the Archer C9 image/icon and scroll down this page, you will see the ethernet negotiation speed of the WAN ports, show us the screenshot:
https://www.tp-link.com/support/faq/2472/
2. Go to Advanced-system tools-system parameters to edit the duplex, change it to 1000Mbps full-duplex save it.
3. After that, try to test the negotiation speed on your PC again. It is strongly suggested to change another CAT5e or CAT6 cable. 
4. It is also suggested to change another wired device with gigabit ethernet ports to do a test. 
5. Is the C9 connected to a switch? May I know its model? What is the length of the Ethernet cable between the C9 and the switch, in other words, what is the distance between them? Is it the same cable when you are testing the speed with your computer connected to the switch directly?
 

Thanks a lot~

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Re:TP Link AC1900 Archer C9 Vr.3, Maximum speed 93 Mbps -Solution
2020-09-22 03:37:08 - last edited 2020-09-22 03:37:13

@alaba1 

 

Hi,

 

For the speed issue you encountered, please try the below suggestions and get back to the community with the details if it cannot be solved, thanks.
1. log into the web UI of the Archer C9 and go to the Basic-Network map page, click the Archer C9 image/icon and scroll down this page, you will see the ethernet negotiation speed of the WAN ports, show us the screenshot:
https://www.tp-link.com/support/faq/2472/
2. Go to Advanced-system tools-system parameters to edit the duplex, change it to 1000Mbps full-duplex save it.
3. After that, try to test the negotiation speed on your PC again. It is strongly suggested to change another CAT5e or CAT6 cable. 
4. It is also suggested to change another wired device with gigabit ethernet ports to do a test. 
5. Is the C9 connected to a switch? May I know its model? What is the length of the Ethernet cable between the C9 and the switch, in other words, what is the distance between them? Is it the same cable when you are testing the speed with your computer connected to the switch directly?
 

Thanks a lot~

Best Solution
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#2
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