Asus AX53U Slow Performance on Telekom Fiber

Installing and Using OpenWrt
1

Hello everyone,

I have been trying for a few days to get an Asus AX53U to run on a Telekom Modem 2 fiber optic modem.

The booked tariff should bring 500mbit.
I have tested:
Openwrt 22.03.5, 23.05.2 and also the last 2 snapshots.

I have set up everything according to the following instructions:

The connection was there immediately.
However, I have the following speeds:
5ghz Wifi: 190mbit
2.4ghz: 100mbit
Lan cable: 100mbit (all ports).

The Telekom fiber optic connection is new, as is the modem.
I have tested the software/hardware flow offloading and nothing has changed in terms of speed.
I am not an expert, just know a few basics about Openwrt.
Would be great if someone could help me to get some more speed

2

from where to where ?

100mbit port speed wouldn't permit 190mbit via wifi.

3

I tested with a Dell Precision 7750.
The result also looked strange to me

The LAN speed is also secondary for me, the wifi speed would be important to me.

4

again, from where (dell precision, I guess ) to where ?

using what ?

5

So from LAN port 1,2,3 router to laptop.
But I have now seen that it was a CAT5 cable that I used. With Cat5e I have 500mbit full.
Sorry for this.
Speedtest I do on Speedtest.net.

But as soon as I use wifi the speeds are significantly worse.

6

Signal quality and client configuration and location also greatly matter. You can expect around 500 Mbps with a regular 802.11ax client (2T2R), I'm hitting around 600 Mbps but that's close to the access point.

7

plus the wifi config on the router itself.

8

Try:

and post a screenshot (the screenshot contains your approximate location and current IP address, so make sure to redact those if you consider these sensitive).

Also please read:

While I think that ~200Mbps is a bit low for WiFi on that device, I believe the AX53U is MIPS based and hence in no way suitable for saturating a 500 Mbps link. (No need to change the router, if you can accept a lower download rate, or you could switch to the cheaper 250/50 tarif once your current contract is over).

Measured throughput of reported link rate? IIRC on WiFi achievable throughput often is in the range of 2/3 of reported link speed...

9

I was talking iperf numbers, but I might have gotten things mixed up. Will check again.

10

@moeller0 I'll rerun the iperf tests, but if I'm mistaken I must have been hallucinating thoroughly, since I said similar stuf last year:

Edit: nevermind that second link, that's bogus localhost iperf it seems.

11

Oh, I was only trying to inquire what you were measuring/reporting exactly. I have no idea/opinion on what the mediatek WiFi is capable off.
Sorry if this sounded like me questioning the validity of your numbers.

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12

No worries, didn't perceive it as such.

Ah I found a second post of mine :smiley:

So I will definitely be re-running those numbers :slight_smile: .

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13

@moeller0 I wasn't crazy after all :slight_smile: Line of sight with the EAP615-Wall (on 23.05, like 2m distance), Intel AX210 client, Debian Bookworm.

$ iperf3 -c 10.0.0.8
Connecting to host 10.0.0.8, port 5201
[  5] local 10.0.0.5 port 42240 connected to 10.0.0.8 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  61.0 MBytes   512 Mbits/sec    0   2.23 MBytes       
[  5]   1.00-2.00   sec  66.2 MBytes   556 Mbits/sec    0   2.99 MBytes       
[  5]   2.00-3.00   sec  65.0 MBytes   545 Mbits/sec    0   3.18 MBytes       
[  5]   3.00-4.00   sec  73.8 MBytes   619 Mbits/sec    0   3.18 MBytes       
[  5]   4.00-5.00   sec  72.5 MBytes   607 Mbits/sec    0   3.18 MBytes       
[  5]   5.00-6.00   sec  72.5 MBytes   609 Mbits/sec  166   2.39 MBytes       
[  5]   6.00-7.00   sec  73.8 MBytes   619 Mbits/sec    0   2.56 MBytes       
[  5]   7.00-8.00   sec  75.0 MBytes   629 Mbits/sec    0   2.75 MBytes       
[  5]   8.00-9.00   sec  77.5 MBytes   650 Mbits/sec    0   2.88 MBytes       
[  5]   9.00-10.00  sec  78.8 MBytes   661 Mbits/sec    0   2.96 MBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   716 MBytes   601 Mbits/sec  166             sender
[  5]   0.00-10.01  sec   713 MBytes   597 Mbits/sec                  receiver
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