Joined: 21 Jan 2017 Posts: 1782 Location: Illinois Moderator
Posted: Fri Sep 04, 2020 16:25 Post subject: [Solved] Strange 5g to 2.4g transition of clients
For those of you privy to be running nightly builds from BS, I've been noticing most of all my clients reverting back to 2.4ghz wifi since builds >44191 8/14/20. They will initially connect to 5ghz just fine, but will fall back to 2.4ghz... I'm using the same SSID name between radio's. 5ghz beacon is set to 101 and 2.4 is 191...so 5ghz should be seen first-and clients do connect properly...but at some point fall back to 2.4ghz (hours, not days)
Has anyone else noticed this pattern/behavior?
I was running up to 44294 a few minutes ago when I noticed all clients using 2.4ghz signals on across main wifi and 2VAP's...
I am trying to figure out if a recent secondary VAP is causing the issue or if the recent "commit of driver changelogs" is the responsible culprit; seems like the latter to me, but I need someone else to chime in.
This is on my R9000...
So R9000 users and R7800 users please comment.
Maybe Mrjcd too with his EA8500.
Thanks in advance guys! _________________ FORUM RULES
Joined: 08 May 2018 Posts: 14125 Location: Texas, USA
Posted: Fri Sep 04, 2020 17:04 Post subject:
This is why it was advised not to use the same SSID long before I ever got here. It's going to do that unless you force the client to connect to a specific band, which is usually not possible on some devices. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Posted: Fri Sep 04, 2020 18:22 Post subject: Re: For users running nightly builds-Strange 5ghz drop-off i
msoengineer wrote:
Maybe Mrjcd too with his EA8500.
EA8500 r44286 up 19:02 and its been very good.
NO problems with 5GHz. My phone stays on 5GHz just bout all time. Two tablets always stay on the 5GHz guest net and
usually casting to at least 1 of my 3 chromecasts which the chromeycast are 2.4 only but tis all on guest net.
AND yeahuh, I have always used different SSIDs for all / ath0, ath0.1, ath1, ath1.1 ...da VAPs are on br1 along with the one wired VLAN port 4
not happening here with same ssid in tri radio setup. using different ssid = no roaming between bands.
naa...my moto g7 phone switches to 2.4 perfectly fine iffin I get out of the 5GHz range.
My oldass Droid Turbo done same with no problem.
AFAIK alot of that is client crap anyways
Joined: 21 Jan 2017 Posts: 1782 Location: Illinois Moderator
Posted: Fri Sep 04, 2020 19:39 Post subject:
Concerning comments to run separate SSID (I know), BUT the fact is that this was not an issue until builds newer than 44191.... now I could have strong signals and after 13 minutes a client device will randomly decide it likes 2.4ghz better....it will even drop to 1x1:1.
Something has been altered in dd-wrt code... I never had issues with stationary clients dropping off...clients are even reverting to 1x1:1 streams...
Something is not right...and it's dd-wrt...everything is fine on 44188...No drivers were altered or updated on the stationary devices...
Grrr
Nothing in Klog to indicate why it went to 1x1:1 stream either on the E4 mac address...
What other dumps from telnet might yield a hint?
Please be specific with code/commands...not a linux whiz..
One other piece of info, I am using 802.11r (FT) support to help devices switch between radios more efficiently...though this may only need to be used if using another router for WDS?
I can't experiment more for a few hours when kids are done with e-learning...
The only other factor is I added a new second VAP for the kids' e-learning devices on 10.0.0.x IP Subnet... but I can't imagine a new VAP would be the cause of this issue...
Joined: 03 Jan 2010 Posts: 7568 Location: YWG, Canada
Posted: Fri Sep 04, 2020 19:51 Post subject:
mrjcd wrote:
tatsuya46 wrote:
not happening here with same ssid in tri radio setup. using different ssid = no roaming between bands.
naa...my moto g7 phone switches to 2.4 perfectly fine iffin I get out of the 5GHz range.
My oldass Droid Turbo done same with no problem.
AFAIK alot of that is client crap anyways
switching between at client's discretion ya, but not the "seamless with minimal to no drop/hang" kind of roaming _________________ LATEST FIRMWARE(S)
BrainSlayer wrote:
we just do it since we do not like any restrictions enforced by stupid cocaine snorting managers
Joined: 21 Jan 2017 Posts: 1782 Location: Illinois Moderator
Posted: Fri Sep 04, 2020 19:56 Post subject:
tatsuya46 wrote:
mrjcd wrote:
tatsuya46 wrote:
not happening here with same ssid in tri radio setup. using different ssid = no roaming between bands.
naa...my moto g7 phone switches to 2.4 perfectly fine iffin I get out of the 5GHz range.
My oldass Droid Turbo done same with no problem.
AFAIK alot of that is client crap anyways
switching between at client's discretion ya, but not the "seamless with minimal to no drop/hang" kind of roaming
Thus the point of running the same SSID...trying to keep shit "seamless" in the 5g radio switch dropping into 2.4 zone... vs "Dad, wifi isn't working!" _________________ FORUM RULES
Joined: 16 Nov 2015 Posts: 6410 Location: UK, London, just across the river..
Posted: Fri Sep 04, 2020 20:46 Post subject:
tried on a spare R7800 no problems, i have iphonys mostly, im on bacon int 100...
have to sexpose all the wifi sett to compare... 🤪 _________________ Atheros
TP-Link WR740Nv1 ---DD-WRT 55179 WAP
TP-Link WR1043NDv2 -DD-WRT 55303 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 55460 Gateway/DoH,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
Netgear R7800 --DD-WRT 55460 Gateway/DoT,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla
Netgear R9000 --DD-WRT 55363 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Broadcom
Netgear R7000 --DD-WRT 55460 Gateway/SmartDNS/DoH,AD-Block,Firewall,Forced DNS,x3VLAN,VPN
NOT USING 5Ghz ANYWHERE
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