Hi there, I've just had a 1000/1000 Gbp/s Leased line installed at the premises and are have a problem with the connection speed using my DrayTek Vigor 3900 FW 1.5.1. I have only been able to MAX this connection speed on your router to 200/200 Gbp/s connected to either WAN1 or ( WAN5 ( Optical )) and gets nowhere near the 1000/1000 Gbp/s supplied to the premises.

If i bypass the 9300 completely and connect my dedicated line to a PC i receive at lease 950/950 Mbp/s using the 1 Ethernet or Fiber cable.

Could you point me in the direction to why your 9300 is only providing 200/200 mbp/s on 1 wan port or SFP and not the full 1Gbp/s as the port suggests.

Hope you can shed some light on this as i need to get it up to speed to use all of my new 1Gbp/s Internet Fiber line.



Many Thanks, Taz

Taz, did you solve this?

I have Drytek Vigor 3910 running Firmware 4.4.3.2/v28 (latest version)
From VirginMedia I moved to Community Fibre. 3 - 4 weeks of new install Community Fibre install and even with VirginMedia I have not had this issue. 

ISSUE
Every morning Linespeed drops from 900 mbps to 80 mbps. The only solution is to full reboot the Vigor 3910.

• Has anyone else experineced this?
• Is this a Vigor 3910 issue or Community Fibre issue? 
• Any advice?

Comments

• I have used the same MAC address as the Community Fibre router and it works, just had to reboot the wall ONT.
• WAN > General Setup I have tried both options Line Speed : Auto Detect & According to Line Speed. 
• After reboot I am on 900 mbps - once I left it at 80 mbps and sometime in the evening after 8 hours or more the line speed automatically went to 900 mbps. 
• I think it is a Community Fibre issue but they will not support 3rd party router. Therefore reaching out to other UK users who might have a similar issue with Community Fibre and Vigor models? 

Update : 16 Feb 2025
Community Fibre have resolved the issue with comment "We had cleared the fibre errors".  Therefore Backend issue.
The engineer who came onsite confirmed in 16 days I only had 3 errors on the ONT with -19db reading (-25db being the limit). Nothing was changed onsite as there was no fault found. 
This was my Communtiy Fibre Ticket reference R-710628106 if anyone might need to as reference.