Re: batadv gw_mode client 0?

[Sven Eckelmann <sven@narfation.org>]

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On Wednesday, 24 June 2020 22:02:38 CEST Rob Cowart wrote:
[....]
> Is anything wrong with these?

Most likely not, but someone on the mailing list with deeper knowledge on 
B.A.T.M.A.N. V's echo location protocol could actually check whether non-
symmetric settings on different nodes could create problems or not. Or if 
having both ELP and OGM2 interval set to the same value could have negative 
side effects.


> Our gateway:
> 
> pi@raspberrypi:~/xeco-master/enola-daemon $ cat /sys/class/net/wlan0/batman_adv/elp_interval 
> 500
> pi@raspberrypi:~/xeco-master/enola-daemon $ cat /sys/class/net/bat0/mesh/orig_interval
> 1000
> 
> nodes:
> pi@raspberrypi:~ $ cat /sys/class/net/wlan0/batman_adv/elp_interval
> 30000
> pi@raspberrypi:~ $ cat /sys/class/net/bat0/mesh/orig_interval
> 30000
[...]

On Wednesday, 24 June 2020 21:23:09 CEST Rob Cowart wrote:
> IF             Neighbor              last-seen
> b8:27:eb:4e:73:6d   25.330s (        1.0) [     wlan0]
> b8:27:eb:ff:0e:b6   23.320s (        1.0) [     wlan0]
> b8:27:eb:08:13:37   18.850s (        1.0) [     wlan0]
> b8:27:eb:aa:1e:6d   37.010s (        1.0) [     wlan0]
> b8:27:eb:35:c6:77   63.590s (        1.0) [     wlan0]
> b8:27:eb:e9:34:41   18.280s (        1.0) [     wlan0]
> b8:27:eb:84:ca:90   30.560s (        1.0) [     wlan0]
> b8:27:eb:1e:eb:cd   27.410s (        1.0) [     wlan0]
> b8:27:eb:cb:80:34   23.100s (        1.0) [     wlan0]

Btw. it looks to me like B.A.T.M.A.N. V is a really bad choice for your setup. 
All links have the throughput value 1.0 Mbit/s. This sounds to me like the 
wifi driver doesn't provide the required expected_throughput. And so you have 
a REALLY, REALLY, REALLY bad metric when you are using 1.0 everywhere. So if 
you want to continue experimenting with B.A.T.M.A.N. V then you should try to 
get this fixed in your wifi driver or just switch to B.A.T.M.A.N. IV with 
increased multicast rate.


> Lots of stuff I don't understand here, looks like loopback is very busy?
 
Not sure what you mean here with loopback. I will just leave the whole output 
here in case somebody else on the mailing list wants to figure it out.
 
> pi@raspberrypi:~/xeco-master/enola-daemon $ sudo batctl td wlan0
> 15:01:52.075412 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 704843962, v 15, interval 500ms, length 20
> 15:01:52.076036 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.076507 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.076854 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.077456 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.077937 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.078028 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.078657 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.079155 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.079246 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.079894 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.080480 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.080965 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.081435 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.081904 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.081995 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.082435 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.082539 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.082957 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200
> 15:01:52.415359 BAT b8:27:eb:fb:4e:58: OGM2 via neigh b8:27:eb:fb:4e:58, seq 500807384, throughput MAX, ttl 50, v 15, length 60, tvlv_len 40
> 	TVLV TTv1: OGM DIFF [.] ttvn=1 vlan_num=1 entry_num=0
> 		VLAN ID -1, crc 0xf0cfd284
> 	TVLV GWv1: down 10.0Mbps, up 2.0Mbps
> 	TVLV DATv1: enabled
> 15:01:52.423153 BAT b8:27:eb:fb:4e:58: OGM2 via neigh b8:27:eb:aa:1e:6d, seq 500807384, throughput 15.0Mbps, ttl 49, v 15, length 60, tvlv_len 40
> 	TVLV TTv1: OGM DIFF [.] ttvn=1 vlan_num=1 entry_num=0
> 		VLAN ID -1, crc 0xf0cfd284
> 	TVLV GWv1: down 10.0Mbps, up 2.0Mbps
> 	TVLV DATv1: enabled
> 15:01:52.424280 BAT b8:27:eb:fb:4e:58: OGM2 via neigh b8:27:eb:cb:80:34, seq 500807384, throughput 14.9Mbps, ttl 49, v 15, length 60, tvlv_len 40
> 	TVLV TTv1: OGM DIFF [.] ttvn=1 vlan_num=1 entry_num=0
> 		VLAN ID -1, crc 0xf0cfd284
> 	TVLV GWv1: down 10.0Mbps, up 2.0Mbps
> 	TVLV DATv1: enabled
> 15:01:52.428556 BAT b8:27:eb:fb:4e:58: OGM2 via neigh b8:27:eb:84:ca:90, seq 500807384, throughput 15.0Mbps, ttl 49, v 15, length 60, tvlv_len 40
> 	TVLV TTv1: OGM DIFF [.] ttvn=1 vlan_num=1 entry_num=0
> 		VLAN ID -1, crc 0xf0cfd284
> 	TVLV GWv1: down 10.0Mbps, up 2.0Mbps
> 	TVLV DATv1: enabled
> 15:01:52.575301 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 704843963, v 15, interval 500ms, length 20
> 15:01:52.575486 BAT b8:27:eb:fb:4e:58: ELP via iface b8:27:eb:fb:4e:58, seq 0, v 15, interval 0ms, length 200

Kind regards,
	Sven

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