Intenet speed issue with Vigor 2962 Series

Hello,

I have a Vigor 2962 Series connected to a 5G router.

If I connect the 5G router directly to the PC, I get a high-speed internet of about 400 Mbps. But when I connect the Vigor 2962 Series, I get a slow speed of 50 Mbps.
All bandwidth management services are disabled. MTU is set to 1500.

Your help is much appreciated!

Hi,

I have a Vigor 2962 Series connected to a 5G router.

How is the 5G Router connected to the 2962, is it via an Ethernet port or is it a USB 5G?



 

It's connected via Ethernet WAN port 1.
And my LAN is connected via LAN port 6

Can someone help, please

Maybe attach some screenshots of the config of both devices - maybe then somebody will spot something - as it stands you aren't giving a lot to go on.

You say MTU is set at 1500 - lovely - but where? on the 5G router or the Draytek or both - details like that will matter.

e.g. (from Google AI ): -
The typical Maximum Transmission Unit (MTU) for a 5G router is 1428 or 1420 bytes.

So if your Draytek is set at 1500 then you've got a lot of fragmentation happening when that is involved.

Hi @Ian

Actually, there are not that many configurations.
I set the IP address to WAN 1 and WAN 2, and as mentioned, the MTU was only on Draytek and detected automatically, as shown in the pictures. All Bandwidth Management ( Sessions Limit, Bandwidth Limit, Quality of Service, and APP QoS) are disabled, and also the WAN Budget is disabled.
I tried with one WAN  only, but it's still the same issue.