Also, in GUI>Status>Wireless check out the Site Survey (to find what channels your neighbors are on and how strong their signals are) and Channel Survey (to see how busy those neighbor systems are). Many areas have so much wifi traffic in the air that picking the right channel is key.
If you have a lot of 2.4 GHz wifi traffic in your area, you might need to stick to NG-Mixed with 20 MHz bandwidth on channel 1, 6, or 11 if you are in the US. If interference is not a huge issue, try NG-Mixed at 40 MHz width on channel 1U or channel 11L. Either way, enabling TurboQAM (QAM256) support is worth trying if your own signals tend to be strong. You'll need more signal strength to make a go of 40 MHz than you'll need with 20 MHz.
Usually the 5 GHz band is less busy. If interference from neighbors is minimal and your own signals are really strong, give AC/N-Mixed with 80 MHz bandwidth a try on, in the US, channel 36UU or 149UU. At 80 MHz in the US, those are actually the only legal channel choices. (Using other extension-channel choices, these same channels come with different channel numbers.) If your 5 GHz signals are weaker, you may want to cut back to 40 MHz or even 20 MHz bandwidth. Those give you more channel choice, but I'm not up on the details, since I use 80 MHz here. Remember that speed is proportional to bandwidth but so is the amount of internal electronics noise the signal competes with in the wifi receiving hardware. Finally, with the default US transmit power level of 30 dBm, US users will see in the Status tab that the router drops transmit power on channel 36 to 23 dBm (about 1/4 the power of 30 dBm). Regulations require it. So I prefer channel 149 if interference is not an issue.
Those comments are US-specific because that's what I know. I missed actually catching what your location is. In an case, the link above is invaluable. Walk through it carefully. _________________ 2x Netgear XR500 and 3x Linksys WRT1900ACSv2 on 53544: VLANs, VAPs, NAS, station mode, OpenVPN client (AirVPN), wireguard server (AirVPN port forward) and clients (AzireVPN, AirVPN, private), 3 DNSCrypt providers via VPN.
dd-wrt is always in beta. That's one of the long-time complaints about it. There is no universal "stable" build. I'm on build r40009 and most people consider that one but there's nothing official.
Just curious but now that your device connects at 60mps, what kind of speeds do you see in real world speed tests on the device? I routinely connect an asus tablet at 65mps but real world speeds are usually half of that on speed tests.
Also, in GUI>Status>Wireless check out the Site Survey (to find what channels your neighbors are on and how strong their signals are) and Channel Survey (to see how busy those neighbor systems are). Many areas have so much wifi traffic in the air that picking the right channel is key.
If you have a lot of 2.4 GHz wifi traffic in your area, you might need to stick to NG-Mixed with 20 MHz bandwidth on channel 1, 6, or 11 if you are in the US. If interference is not a huge issue, try NG-Mixed at 40 MHz width on channel 1U or channel 11L. Either way, enabling TurboQAM (QAM256) support is worth trying if your own signals tend to be strong. You'll need more signal strength to make a go of 40 MHz than you'll need with 20 MHz.
Usually the 5 GHz band is less busy. If interference from neighbors is minimal and your own signals are really strong, give AC/N-Mixed with 80 MHz bandwidth a try on, in the US, channel 36UU or 149UU. At 80 MHz in the US, those are actually the only legal channel choices. (Using other extension-channel choices, these same channels come with different channel numbers.) If your 5 GHz signals are weaker, you may want to cut back to 40 MHz or even 20 MHz bandwidth. Those give you more channel choice, but I'm not up on the details, since I use 80 MHz here. Remember that speed is proportional to bandwidth but so is the amount of internal electronics noise the signal competes with in the wifi receiving hardware. Finally, with the default US transmit power level of 30 dBm, US users will see in the Status tab that the router drops transmit power on channel 36 to 23 dBm (about 1/4 the power of 30 dBm). Regulations require it. So I prefer channel 149 if interference is not an issue.
Those comments are US-specific because that's what I know. I missed actually catching what your location is. In an case, the link above is invaluable. Walk through it carefully.
Yup I am in America, I gave these a shot still at 60mbps from wifi but 420mbps cabled in. I guess that is all i can get.
Joined: 04 Aug 2018 Posts: 1447 Location: Appalachian mountains, USA
Posted: Mon Jan 06, 2020 20:04 Post subject:
digitalbots wrote:
Yup I am in America, I gave these a shot still at 60mbps from wifi but 420mbps cabled in. I guess that is all i can get.
I'm surprised. I knew my WRT1900ACSv2 had a faster processor than the older WRT1900ACv2 (which I think is actually the same router as the WRT1900ACSv1), but I would not have guessed that there might be a serious difference in the wifi drivers or wifi speed. Here I get (GUI>Status>Sys-Info) wifi connections on 5 GHz of 866 Mbps from modern clients in the same room. On 2.4 GHz the close-in modern clients can get 300 Mbps. And I can realize speeds across the internet via those wifi connections up to at least 150 Mbps. It all seems an awful long way from 50 Mbps. I still have to wonder whether something more is going on with your setup.
Do keep in mind that the "modern client" phrase here is important. Older devices aren't getting the speed here. I think those maxed-out speeds are 802.11ac things, AC and not N or the precambrian G. _________________ 2x Netgear XR500 and 3x Linksys WRT1900ACSv2 on 53544: VLANs, VAPs, NAS, station mode, OpenVPN client (AirVPN), wireguard server (AirVPN port forward) and clients (AzireVPN, AirVPN, private), 3 DNSCrypt providers via VPN.
Yup I am in America, I gave these a shot still at 60mbps from wifi but 420mbps cabled in. I guess that is all i can get.
I'm surprised. I knew my WRT1900ACSv2 had a faster processor than the older WRT1900ACv2 (which I think is actually the same router as the WRT1900ACSv1), but I would not have guessed that there might be a serious difference in the wifi drivers or wifi speed. Here I get (GUI>Status>Sys-Info) wifi connections on 5 GHz of 866 Mbps from modern clients in the same room. On 2.4 GHz the close-in modern clients can get 300 Mbps. And I can realize speeds across the internet via those wifi connections up to at least 150 Mbps. It all seems an awful long way from 50 Mbps. I still have to wonder whether something more is going on with your setup.
Do keep in mind that the "modern client" phrase here is important. Older devices aren't getting the speed here. I think those maxed-out speeds are 802.11ac things, AC and not N or the precambrian G.
took a snapshot of the wifi area. But all of my devices are N or AC
2.4ghz on my 1900ac v1
i use Short GI and Short Preamble with NG mixed. @ full 20mhz
on the 5ghz i use 80mhz 149UU+6
Also Short Preamble, Short GI
Those give me the best speed across all the varying wireless devices around here.. _________________ Downloads:
ftp site: ftp://ftp.dd-wrt.com/betas/2021 SVN Timeline:
https://svn.dd-wrt.com/timeline Commands: Misc: sleep 10;stopservice nas;stopservice wlconf;startservice wlconf;startservice nas
samba: { sleep 30; stopservice samba3; startservice samba3; } &
WRT1900ACv1: WIFI: 2.4ghz: NG-mixed, 20mhz channel width, channel follows AP, WPA2-CCMP-128.
WIFI: 5ghz: AC/N mixed, 40mhz channel width, channel 100+upper, WPA2-CCMP-128.
Misc Info: WPA2 Personal: "CCMP-128 (AES)" Static IP's VIA Mac+Host, SFE Enabled, No Rebind, Strict, no-resolv. NOTE: this is now just a wireless access point so to speak but all settings still apply to what ever wireless person connects.
2.4ghz on my 1900ac v1
i use Short GI and Short Preamble with NG mixed. @ full 20mhz
on the 5ghz i use 80mhz 149UU+6
Also Short Preamble, Short GI
Those give me the best speed across all the varying wireless devices around here..
i am not sure of those settings where is "Short GI" and "Short Preamble" at?
EDIT
FOUND IT... no change. THIS IS ODD. I am going to wipe my settings tonight to see if maybe a setting is sitting in the background that is killing me.
Last edited by digitalbots on Mon Jan 06, 2020 21:10; edited 1 time in total
Joined: 04 Aug 2018 Posts: 1447 Location: Appalachian mountains, USA
Posted: Mon Jan 06, 2020 22:31 Post subject:
digitalbots wrote:
took a snapshot of the wifi area. But all of my devices are N or AC
So why is only ath1 represented? Don't you have anything on 5 GHz (ath0 in the WRT1900 series routers)? Is your 5 GHz radio shut off?
If you have CLI access (ssh/putty/telnet), do ifconfig ath0 and ifconfig ath1 and compare their outputs. Anything look obviously wrong with ath0, like it's not UP or is passing no data? _________________ 2x Netgear XR500 and 3x Linksys WRT1900ACSv2 on 53544: VLANs, VAPs, NAS, station mode, OpenVPN client (AirVPN), wireguard server (AirVPN port forward) and clients (AzireVPN, AirVPN, private), 3 DNSCrypt providers via VPN.
