Connection instability

Mark Wahlert mark.wahlert at gmail.com
Sat Feb 4 14:27:50 UTC 2017


LEDE kernel 4.4.42
mmcli 1.7.0
mc7455
tp-link archer c7

config interface 'wwan'
option device   '/sys/devices/platform/ehci-platform.1/usb2/2-1'
option proto    'modemmanager'
option apn      'x.xxxxx'
option lowpower '0'

MM debug log
<http://s000.tinyupload.com/download.php?file_id=69300403721780050133&t=6930040372178005013368350>

I have a script running every 30 seconds to see if google.com is reachable,
if it is "ok" is logged, if it is not "crap" is logged and I turn the
interface down and bring it back up.  The connection is re-established on a
new bearer.  I ran the test overnight and had just two disconnects.  But I
do not see anything telling in the MM debug log.

Most interesting is that this AM the moment I started to leverage the
connection - it started dropping again after very few disconnects overnight.

*# cat reconn.sh *
*#!/bin/bash*

*while :*
*do*

*wget --spider http://www.google.com <http://www.google.com> || (logger
"crap"; ifdown wwan; sleep 5; ifup wwan)*

*logger "ok"*

*sleep 30*

*done*


connection monitor log
<http://s000.tinyupload.com/download.php?file_id=00368766078297344263&t=0036876607829734426362263>

*Summary of disconnect events:*

cat log | grep -i crap
Sat Feb  4 03:29:35 2017 user.notice root: crap
Sat Feb  4 05:01:46 2017 user.notice root: crap
Sat Feb  4 08:30:55 2017 user.notice root: crap
Sat Feb  4 08:32:30 2017 user.notice root: crap
Sat Feb  4 08:34:06 2017 user.notice root: crap
Sat Feb  4 08:46:18 2017 user.notice root: crap
Sat Feb  4 08:46:58 2017 user.notice root: crap

Any help is always appreciated.
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