Linksys EA6900 - Slow WAN speed

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Uner
DD-WRT Novice


Joined: 25 Aug 2023
Posts: 9

PostPosted: Fri Dec 29, 2023 0:54    Post subject: Linksys EA6900 - Slow WAN speed Reply with quote
Hi,
I'm using Linksys EA6900 with DD-WRT v3.0-r53221 std (07/08/23)
My router WAN port is connected to a modem that is capable of download speed of 1Gbps (I've confirmed it with other router)
The cable between the router and the modem is cat5e.

When I'm using speedtest from the router itself from ddwrt webgui I get max 200Mbps download speed.

QoS is off.

Has anyone else have this problem?
Any suggestions on how to solve that?

Thanks.
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dale_gribble39
DD-WRT Guru


Joined: 11 Jun 2022
Posts: 1959

PostPosted: Fri Dec 29, 2023 1:16    Post subject: Reply with quote
Under Setup -> Basic Setup -> WAN Setup -> Optional Settings -> Shortcut Forwarding Engine is CTF, then CTF+FA set and enabled? It may require a reboot or two after configuring those and clicking 'Save'. Also may wish to consider upgrading to current release.
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Uner
DD-WRT Novice


Joined: 25 Aug 2023
Posts: 9

PostPosted: Fri Dec 29, 2023 2:00    Post subject: Reply with quote
I only have CTF option, I don't have CTF+FA option. and even if CTF is enabled i still get 200Mbit download speed max.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12922
Location: Netherlands

PostPosted: Sat Dec 30, 2023 9:47    Post subject: Reply with quote
I have the CTF+FA option and when enabled it does about 900 Mb/s throughput.

However it is not compatible with a few things like SQM/QoS.

You do need a reboot or two for it to become visible and might even need a reset to defaults.

Useful information about the EA6900: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=291230#291230

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Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
Uner
DD-WRT Novice


Joined: 25 Aug 2023
Posts: 9

PostPosted: Mon Jan 01, 2024 1:30    Post subject: Reply with quote
egc wrote:
I have the CTF+FA option and when enabled it does about 900 Mb/s throughput.

However it is not compatible with a few things like SQM/QoS.

You do need a reboot or two for it to become visible and might even need a reset to defaults.

Useful information about the EA6900: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=291230#291230


I've tried reboot 2 times while CTF option is selected, and still have only CTF option.

by reset to defaults you mean this:
First try to reset to default:
Set PC to 192.168.1.5
Power off
Hold blue wps button
Power on
Release WPS button when the linksys light starts flashing
Open webbrowser and go to 192.168.1.1, set default name and password and log in

and then upgrade to newest ddwrt?
if so, does the nvram will still be of size 64KB after doing that?

Thanks.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12922
Location: Netherlands

PostPosted: Mon Jan 01, 2024 8:09    Post subject: Reply with quote
The WPS button reset only works if you have the Xvortex CFE with 64 KB nvram.
If you have then that is the way to go.

Only difference is that you upgrade first and do the reset after the upgrade

_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
Uner
DD-WRT Novice


Joined: 25 Aug 2023
Posts: 9

PostPosted: Wed Jan 10, 2024 5:38    Post subject: Reply with quote
egc wrote:
The WPS button reset only works if you have the Xvortex CFE with 64 KB nvram.
If you have then that is the way to go.

Only difference is that you upgrade first and do the reset after the upgrade


I found out why I don't have Flow Acceleration, it is because my WAN Connection Type is PPPoE, when I change it to DHCP for example I can see the Flow Acceleration option.

Why is that? can it be fixed?

Thanks.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12922
Location: Netherlands

PostPosted: Wed Jan 10, 2024 8:27    Post subject: Reply with quote
No that cannot be fixed, PPPoE is slow
_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
Uner
DD-WRT Novice


Joined: 25 Aug 2023
Posts: 9

PostPosted: Wed Jan 10, 2024 8:59    Post subject: Reply with quote
But obviously other routers and probably even EA6900 stock firmware are able to use PPPoE on 1Gbit connnection, why can't dd-wrt?
Alozaros
DD-WRT Guru


Joined: 16 Nov 2015
Posts: 6447
Location: UK, London, just across the river..

PostPosted: Wed Jan 10, 2024 10:53    Post subject: Reply with quote
Uner wrote:
But obviously other routers and probably even EA6900 stock firmware are able to use PPPoE on 1Gbit connnection, why can't dd-wrt?


Have you ever tried any router performance with PPPoE on 1Gbit connection...???

egc wrote:
No that cannot be fixed, PPPoE is slow

Cool

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TP-Link WR740Nv1 ---DD-WRT 55630 WAP
TP-Link WR1043NDv2 -DD-WRT 55723 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 --DD-WRT 55779 Gateway/DoH,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
Netgear R7800 --DD-WRT 55819 Gateway/DoT,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla
Netgear R9000 --DD-WRT 55779 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
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Uner
DD-WRT Novice


Joined: 25 Aug 2023
Posts: 9

PostPosted: Wed Jan 10, 2024 19:49    Post subject: Reply with quote
Alozaros wrote:
Uner wrote:
But obviously other routers and probably even EA6900 stock firmware are able to use PPPoE on 1Gbit connnection, why can't dd-wrt?


Have you ever tried any router performance with PPPoE on 1Gbit connection...???



Yes, The ISP technician showed me that when he used his router with my PPPoE credentials on my house he get atleast 780Mbps
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