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2.4G WIFI connectivity problem

Discussion in 'ASUS Wireless' started by niXta, May 17, 2018.

  1. niXta

    niXta Occasional Visitor

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    Hi,

    I have a Chinese AC86U with open region settings set to Europe running merlin 384.5. All good so far.

    I've been having some problems with my 2.4G network disappearing/unable to connect.
    On top of that, 2 or 3 times, the webserver freezes (Always when the 2.4G is down). When it does, SSH is still accessible.

    I have some logs I would like to share, I have masked my MAC's, is there anything else I should mask before posting? SN?

    Log deleted
     
    Last edited: May 30, 2018
    Grisu likes this.
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  3. ColinTaylor

    ColinTaylor Part of the Furniture

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    The only thing you need to mask is your WAN IP address and any user names and passwords. You don't need to mask MAC addresses.

    EDIT: You said in your previous post that you hade the same problem with a different router and it was caused by one of your clients.:confused:
     
    Last edited: May 17, 2018
  4. niXta

    niXta Occasional Visitor

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    Ok!
    Will search and put it up.
    I thought I fixed it by restoring my Shield TV, unfortunately it is still acting up - but not in the exact same way. It never says wrong password now. Some devices can’t connect and the GUI is unreachable sometimes.


    Skickat från min iPhone med Tapatalk
     
  5. niXta

    niXta Occasional Visitor

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    Ok, here is the log. I couldn't connect devices on the 2.4G and couldn't access the GUI.
    So I ssh'ed to it and rebooted and pulled the log.
     
    Last edited: May 30, 2018
  6. ColinTaylor

    ColinTaylor Part of the Furniture

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    I don't know the solution :( but your problem seems to be that the router's Mastiff process is constantly crashing and being restarted every 60 seconds :eek:.
    Code:
    May 16 11:58:25 rc_service: watchdog 808:notify_rc stop_aae
    May 16 11:58:25 rc_service: watchdog 808:notify_rc start_mastiff
    May 16 11:58:25 rc_service: waitting "stop_aae" via watchdog ...
    May 16 11:58:25 NAT_Tunnel: AAE Service is stopped
    May 16 11:58:25 NAT_Tunnel: AAE Service is stopped
    May 16 11:58:26 NAT_Tunnel: AAE Service is stopped
    May 16 11:58:26 AAE: AAE Service is started
    May 16 11:58:26 Mastiff: init
    May 16 11:59:03 kernel: mastiff[23453]: unhandled level 2 translation fault (11) at 0x36223a2e, esr 0x92000006
    May 16 11:59:03 kernel: pgd = ffffffc014e4e000
    May 16 11:59:03 kernel: [36223a2e] *pgd=0000000017258003, *pud=0000000017258003, *pmd=0000000000000000
    May 16 11:59:03 kernel: CPU: 0 PID: 23453 Comm: mastiff Tainted: P           O    4.1.27 #2
    May 16 11:59:03 kernel: Hardware name: Broadcom-v8A (DT)
    May 16 11:59:03 kernel: task: ffffffc0193b2b40 ti: ffffffc01578c000 task.ti: ffffffc01578c000
    May 16 11:59:03 kernel: PC is at 0xf6c99218
    May 16 11:59:03 kernel: LR is at 0x0
    May 16 11:59:03 kernel: pc : [<00000000f6c99218>] lr : [<0000000000000000>] pstate: 60010010
    May 16 11:59:03 kernel: sp : 00000000ffa27e20
    May 16 11:59:03 kernel: x12: 00000000ffa27e44
    May 16 11:59:03 kernel: x11: 00000000f6d667a8 x10: 00000000f6d667d8
    May 16 11:59:03 kernel: x9 : 0000000036223a22 x8 : 0000000000000010
    May 16 11:59:03 kernel: x7 : 00000000008bea88 x6 : 00000000008bea78
    May 16 11:59:03 kernel: x5 : 0000000000000070 x4 : 00000000008bea08
    May 16 11:59:03 kernel: x3 : 00000000f6007d22 x2 : 00000000000000e9
    May 16 11:59:03 kernel: x1 : 0000000000000000 x0 : 0000000000000000
    May 16 11:59:26 rc_service: watchdog 808:notify_rc stop_aae
    May 16 11:59:26 rc_service: watchdog 808:notify_rc start_mastiff
    May 16 11:59:26 rc_service: waitting "stop_aae" via watchdog ...
    
    The last reboot also had this crash dump, but I suspect it's coincidental.
    Code:
    Feb 14 01:00:17 kernel: jffs2: notice: (1) check_node_data: wrong data CRC in data node at 0x001e9f9c: read 0x4b16d2df, calculated 0x61f866ff.
    Feb 14 01:00:17 kernel: _ Reboot message ... _______________________________________________________
    Feb 14 01:00:17 kernel: Emergency Sync completebr0: port 6(eth6) entered disabled stateBUG: recent printk recursion!br0: port 5(eth5) entered disabled statebr0: port 4(eth4) entered disabled statebr0: port 3(eth3) entered disabled statedevice eth1 left promiscuous modebr0: port 1(eth1) entered disabled statedevice eth2 left promiscuous modebr0: port 2(eth2) entered disabled statedevice eth3 left promiscuous modebr0: port 3(eth3) entered disabled statedevice eth4 left promiscuous modebr0: port 4(eth4) e
    Feb 14 01:00:18 kernel: , max. volumes count: 128ubi1: max/mean erase counter: 3/2, WL threshold: 4096, image sequence number: 1960956644ubi1: available PEBs: 0, total reserved PEBs: 64, PEBs reserved for bad PEB handling: 4ubi1: background thread "ubi_bgt1d" started, PID 18743UBIFS (ubi1:0): UBIFS: mounted UBI device 1, volume 0, name "nvram", R/O modeUBIFS (ubi1:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytesUBIFS (ubi1:0): FS size: 5840896 bytes (5 MiB, 46 LEBs)
    Feb 14 01:00:18 kernel: core: deregistering interface driver rndis_hostusbcore: deregistering interface driver cdc_etherusbcore: deregistering interface driver ax88179_178ausbcore: deregistering interface driver asixusbcore: deregistering interface driver cdc_acmcdrom: Uniform CD-ROM driver unloadedusbcore: deregistering interface driver usblpdhd_detach(): thread:dhd_watchdog_thread:23e terminated OKFPM Pool 1: invalid token 0x226e8000 freedFPM Pool 1: invalid token 0x22250000 freedFPM Pool 1: invalid
    Feb 14 01:00:18 kernel: ool 1: invalid token 0x20480000 freed
    Feb 14 01:00:18 kernel: ____________________________________________________________________________
    I don't know what Mastiff is but it seems to be linked to "NAT_Tunnel". Do you have any options on the router to turn these things off?
     
  7. niXta

    niXta Occasional Visitor

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    Mastif? They are cute dogs /jk
    I only know of the Asus NAT, should I turn it off?


    Skickat från min iPhone med Tapatalk
     
  8. ColinTaylor

    ColinTaylor Part of the Furniture

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  9. niXta

    niXta Occasional Visitor

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    Last edited: May 21, 2018
  10. niXta

    niXta Occasional Visitor

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    Last edited: Jun 2, 2018
  11. Treadler

    Treadler Regular Contributor

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    Asusnat tunnel > disable.
    Merlin advised this some time ago, I think he said it used CPU & ram, & wasn’t sure what it did.
    I have had it turned off since the option was there to do so.
     
  12. Grisu

    Grisu Very Senior Member

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    And why do we have this problem only in 2,4G?
    How to turn it off with asuswrt in AP-mode?
     
  13. agilani

    agilani Senior Member

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    In my case i am still not sure why it only happens on 2.4ghz. It looks like maybe some sort of dhcp broadcast storm. Where certain devices ask for a dhcp address over and over. Literally, my debug syslog were full of dhcprequest and dhcpack over and over for the same devices. I also increased the dhcp time to two days to see if that lessens the symptom.

    I tracked down the devices that were doing that in my logs and moved them to other ssid's and now my 2.4ghz has been rock solid. In one instance even changing the nic card from the device did not make any difference. I should have captured the network traffic to analyze it more, but now that my 2.4ghz is stable....i doubt I'll get to it.
     
  14. Grisu

    Grisu Very Senior Member

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    no solution for me, there is no dhcp-storm to see in the logs.
     
  15. agilani

    agilani Senior Member

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    Did you turn on debug logging? Do you have the check box next to Hide DHCP/RA queries under dhcp server set to no?
     
  16. Grisu

    Grisu Very Senior Member

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    yes had it on debug-level but now back to stock asuswrt testing mesh, had been in AP-mode with DHCP on modem-router.
     
    Last edited: May 28, 2018
  17. niXta

    niXta Occasional Visitor

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    I've once again got major 2.4G interference. It seems to be coming from the Shield TV I have, it has been completely wiped and restored without any backups. Might be faulty hw?

    I could in real time turn off and on and see all my 2.4G devices connect and disconnect.
     
  18. Grisu

    Grisu Very Senior Member

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    in my case there are no other devices but my 2 asus routers sending WiFi.
     
  19. niXta

    niXta Occasional Visitor

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    Ok, just to be clear. I don't believe I have the 2.4G WiFi problems as the rest in this thread anymore.
    I had the same problems I have now with my R7000.
     
  20. Grisu

    Grisu Very Senior Member

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    seems to be true for you
    I can even turn off 86U and have slow 2,4G on 68U or vice versa, but there are no other networks seen around me, whats going on here?
    -25dbm from one and other -45dbm should give good speed over 100mbps, not <30 going down to 1 mbps fluctuating/hopping up after some second and slowing down again.

    I had times where 68U had >130mbps with previous firmwares. 86U had all the time problems, so for me firmware disaster.
     
  21. niXta

    niXta Occasional Visitor

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    Yep, it might be firmware issues.
    I hate that A̶̶̶s̶̶̶u̶̶̶s̶̶̶ ̶B̶r̶o̶d̶c̶o̶m̶ ̶l̶o̶c̶k̶e̶d̶ ̶t̶h̶e̶ ̶b̶o̶o̶t̶l̶o̶a̶d̶e̶r̶ ̶s̶o̶ ̶y̶o̶u̶ ̶c̶a̶n̶'̶t̶ ̶r̶u̶n̶ ̶o̶t̶h̶e̶r̶ ̶f̶i̶r̶m̶w̶a̶r̶e̶'s̶ ̶o̶n̶ ̶t̶h̶e̶ ̶8̶6̶U̶...

    Edit: Actually it's 3rd party firmware makers that can't/won't create firmware's for this platform.
     
    Last edited: Jun 11, 2018
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