[Cerowrt-devel] [Bug #442] wifi fails to transmit traffic after a few hours

[Neil Shepperd]

Experiencing the bug every few days:

root at cerowrt:~# cat /etc/openwrt_release
DISTRIB_ID="CeroWrt"
DISTRIB_RELEASE="3.10.34-4"
DISTRIB_REVISION="r40361"
DISTRIB_CODENAME="toronto"
DISTRIB_TARGET="ar71xx/generic"
DISTRIB_DESCRIPTION="CeroWrt Toronto 3.10.34-4"
DISTRIB_TAINTS="no-all busybox"

root at cerowrt:~# uptime
 12:22:42 up 1 day, 18:37,  load average: 0.04, 0.04, 0.05

root at cerowrt:~# egrep -i "country|channel|htmode" /etc/config/wireless
        option htmode 'HT20'
        option country 'AU'
        option channel 'auto'
        option htmode 'HT20'
        option country 'AU'
        option channel 'auto'

>> It_would_be_nice_to_see_10sec_of_these_captures_before_and_after.

Uploaded at http://zlkj.in/files/wireshark/. I filtered the captures in
wireshark for frame.time > "April 5, 2014 20:40:44" which is about 10
seconds before the bug. wlan0.cap is the capture from my laptop. ppp.cap
is from the pppoe connection on ge00.

>> It_is_possible_there_are_a_variety_of_failure_modes.
>>
>> I_am_not_entirely_convinced_this_is_actually_a_wifi_specific_failure.
>>
>> can_you_try_ssh_to_the_router_during_a_failure,and/or_accessing
>> the_web_admin_interface?and/or_trying_to

I can ssh in and access the admin interface if I connect my laptop by an
ethernet cable. But during the failure, I can't access the admin
interface or the internet over sw00. After resetting sw00 by admin
interface on se00, I can connect over the wireless again.

>> if_you_are_not_using_babel_disable_it.It_makes_a_lot_of_updates
>> to_the_routing_table.that_might_be_malfunctioning..

I thought I disabled babel, but I'm still seeing babel packets in the
capture, so I guess disabling the "babel" networks on both radios in the
wifi tab is not enough.