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Forum Discussion
Can't get TXBUF and the txq depth is 0 - Issues on two WNDAP 360
Hello
Our society owns 3 wifi access points.
Since a few weeks, they suddenly started to slow down, the logs showing the message :
Oct 6 08:39:02 kernel: **********start to dump txq info*******************
Oct 6 08:39:02 kernel: Current free txbuf is 48
Oct 6 08:39:02 kernel: TXQ0 is empty, head=tail=0, depth=0
Oct 6 08:39:02 kernel: TXQ1 is empty, head=tail=0, depth=0
Oct 6 08:39:02 kernel: TXQ2 is empty, head=tail=0, depth=0
Oct 6 08:39:02 kernel: TXQ3 is empty, head=tail=0, depth=0
Oct 6 08:39:02 kernel: TXQ7 is empty, head=tail=0, depth=0
Oct 6 08:39:02 kernel: TXQ8 is empty, head=tail=0, depth=0
Oct 6 08:39:02 kernel: Can't get TXBUF and the txq depth is 0, trigger the schedule
Oct 6 08:39:02 kernel: Can't get TXBUF and the txq depth is 0, trigger the schedule<4>Can't get TXBUF and the txq depth is 0, trigger the schedule
The subject has already been evoked, but i can't find any solution.
Can anyone help me to find a solution ?
Thank's in advance
6 Replies
Welcome to the community! 🙂
Are there any changed made recently on the settings of the WNDAP360 that might have triggered the problem?
Are you still able to access the internet just fine via a wired connection?
How are the WNDAP360 access points deployed? Is it mounted on a side wall or on a ceiling?
How is everything connected? It would be best that you post a detailed diagram of your current network setup.
What is the current firmware version of the WNDAP360?
Regards,
DaneA
NETGEAR Community Team
Hi Dane, thank's for your answer,
There has been no change in our network structure since, at least, a year. The problem seeming to be less than a quarter old.
Neither physically (except new PC clients of course), nor for the firmwares.
The netgear firmwares have been updated to the 3.7.11.4 version after the beginning of the problem, the 2022-10-05.
The same day i've disconnected the syslog, the syslog server being flooded by the error messages.
The router behaves slowly, but the integrated network integrity test is OK.
Both WNDAP (included one WNDAP620, not impacted by the failures yet) are on a side wall.
The installation is spreaded between two floors, one on the first, the other on the second floor. Each one is linked on a different switch : 1 HPE OfficeConnect Switch 1820 48G, 1 HPE OfficeConnect Switch 1820 24G, these switched being uplinked by a 1Gb fiber..
The 48G being linked to the Internet via a 20 mb/s fiber link.
And i've checked that there was no drift in the clocks of the differents devices.
Regards
Olivier
Thank you for your response.
Just to verify, the wireless connection is slow on both 2.4GHz and 5GHz?
Let us try to change the wireless channel on both 2.4GHz and 5GHz and observe if it will help.
Kindly try to unsecure the SSID on both 2.4Ghz and 5GHz then check if the wireless connection is still slow.
Try to reboot WNDAP360 then observe if the same problem will occur.
Regards,
DaneA
NETGEAR Community Team
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