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I have a Zyxel T-56 router and my subscription is 2Gbps.

However I am not getting more than 90Mbps not even when Wired directly to the router.

I have also tried Wifi in my phone, in front of the router, and I still reach the same 90Mbps.

After a very long investigation here I realized that the Zyxel router is wrongly setting the Ethernet WAN to 100M/Full as you can see in the image below.

 

I have already tried to reset the router and the modem, but nothing helped.

After a few attempts I realized that if I disconnect the cable multiple times from the modem to the router, at some point it changes the Ethernet WAN to 2500M/Full. But it only happens for a few minutes, if I move the router a little bit, this goes back to 100M/Full.

My impression is that there’s something wrong with the port of the router but I don’t have another router to test it.

Usually with problems like this the problem is with the utp cable. If I where you I would start with replacing the cable between the ONT and your router. 

I think you are correct. I did some tests with different cables and they were having the same issue, now I tried with the one supplied by Odido and that has stabilized pretty well with 2500M/Full.

However, I am still not getting the 2Gbps, it reaches maximum 900Mbps.

 

Hi @SDantas, welcome to our Community!

What cable are you using? It must be a Cat6a cable or higher and it only works in the 2.5 Gb port on the modem.  

I am using a Cat6 cable that should support up to 10Gbps. But to be on the safe side I am getting a new cable Cat7

Cat 6 is up to 1 Gb @SDantas.

Versie Maximale snelheid Frequentie
Cat5 100 Mbit/s 100 MHz
Cat5e 1 Gb/s 100 MHz
Cat6 1 Gb/s 250 MHz
Cat6a 10 Gb/s 500 MHz
Cat7 10 Gb/s 600 MHz
Cat7a 40 Gb/s 1 GHz

 

Hello @SDantas 

I have a 1.5 metre CAT6 cable between ONT and Zyxel-T56, interface shows 2500 m/full. It is possible with a short cable but when you need a longer cable it is better to use CAT6A or better.

I think you are correct. I did some tests with different cables and they were having the same issue, now I tried with the one supplied by Odido and that has stabilized pretty well with 2500M/Full.

However, I am still not getting the 2Gbps, it reaches maximum 900Mbps.

 

If the wan interface is now showing 2500M I'd say that replacing that cable again is unnecessary. How are you testing the connection speed, wifi or cable? 900mb/s on WiFi is not a bad result. When using a wired connection you would expect more, but only if the network interface of the connected device supports those speeds. Many consumer devices cap on 1000mb/s. What device are you testing on? 

 

I think you are correct. I did some tests with different cables and they were having the same issue, now I tried with the one supplied by Odido and that has stabilized pretty well with 2500M/Full.

However, I am still not getting the 2Gbps, it reaches maximum 900Mbps.

 

If the wan interface is now showing 2500M I'd say that replacing that cable again is unnecessary. How are you testing the connection speed, wifi or cable? 900mb/s on WiFi is not a bad result. When using a wired connection you would expect more, but only if the network interface of the connected device supports those speeds. Many consumer devices cap on 1000mb/s. What device are you testing on? 

I am testing on a laptop via wired connection. Once again you are correct, I checked the LAN port of my laptop and it supports up to 1Gbps. https://www.intel.com/content/www/us/en/products/sku/82185/intel-ethernet-connection-i219lm/specifications.html

Looks like I am just paying for 2Gbps for no reason, since Playstation 5 does not support 2Gbps and the same applies to my laptop. I will probably just change my internet to 1Gbps and pay the price of what I can really use.

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