12 Mar
2018
12 Mar
'18
12:02 p.m.
On Sun, 2018-03-04 at 17:08 +0000, Paul Harmor wrote:
After weeks of trial and error and troubleshooting on
several
different Chef builds (1x ar71xx/wndr3700v2, 3x x86 of all different
hardware), default LiMe 802.11s profile, I've come to the conclusion
that watchping or some other link in the chain is failing to offer
the gateway.
Hi Paul!
Despite your scenario is not the straightforward one (having a usb wifi
interface as WAN), if this is a common scenario it would be good to
have it included.
Please, do share with us a little bit more on why you have that setup
so we can understand the case!
At any time, if any node loses WAN uplink, it and
it's clients will
sit without internet for hours, while still communicating with all
other nodes and machines on the network.
Based on
https://github.com/libremesh/lime-packages/blob/develop/packages/watchp
ing/files/etc/uci-defaults/90_watchping
watchping should be trying to test the connection every 20s and if inet
found (by pinging google's dns 8.8.8.8 host) will run triggers.
If you have a vanilla libremesh setup, that means it will run this:
https://github.com/libremesh/lime-packages/blob/develop/packages/bmx6-a
uto-gw-mode/files/etc/watchping/wan-ok.d/bmx6-gw
and by doing so configuring bmx6 to be aware of that route to internet
for both your local device and your networks.
If the network falls, this gets run:
https://github.com/libremesh/lime-packages/blob/develop/packages/bmx6-a
uto-gw-mode/files/etc/watchping/wan-fail.d/bmx6-gw
so it should change the path it takes to go to internet to one
neighbour of yours.
After some chat in the dev channel, the fact that I was using USB
WiFi devices as WAN interfaces, set up with the LEDE/OPENWRT default
WWAN iface name, became suspect as the cause. Unfortunately however,
neither changing the reference in the watchping settings in
/etc/config/system, nor changing WWAN to WAN as the actual interface
used made any difference. The nodes CAN communicate (thus not the
usual "can't ping" bug), Uplink is recognized as lost by watchping,
but the node with one does not ever offer it up.
Based on this:
https://github.com/libremesh/lime-packages/blob/55a063678fc570000ceb99b
9382ed22ccda8fce3/packages/watchping/files/etc/uci-
defaults/90_watchping#L6
it uses the interface wan for the check... so if you add your interface
to it should do.
Once again, this is with the default 802.11s profile,
meaning BMX6. I
have not yet tried BMX7, as I'm not sure how to migrate from one to
the other in place.
BMX7 is not the default on LibreMesh, so you should not expect better
support there than on the default one.
Can you send the output of logread regarding this things?
Try to see what watchping says, it should be saying like the ones here:
https://github.com/libremesh/lime-packages/blob/develop/packages/watchp
ing/files/usr/bin/watchping#L63
Regards,