On Monday, 25 May 2020 19:21:50 CEST Alexey Ermakov wrote: > > I am surprised you still are configuring a throughput override of > > 100kbit/s. What's the idea behind this configuration ? > > I have two channels between nodes (actually more, but this doesn't matter > now) 1) Radio modem, connects as follows: > NODE1(eth0)<-->modem(radio)<-->(radio)modem<-->(eth0)NODE2 > eth0 interface have 100mbit/s speed and batman detects it as 100mbit/s. > radio has 145kbit/s, and actual speed of this channel is 145kbit/s > > 2) eth1 Ethernet channel. Speed of this channel is 100mbit/s > NODE1(eth1)<---->(eth1)NODE2 > > Now make a test: > 1) Set up eth0 modem channel > 2) Disconnect eth1 channel > 3) Turn on nodes - batman saw eth0 channel between nodes and detected > speed 100mbit/s (because speed between node and modem is 100mbit/s, as > I understand) > 4) plug eth1 cable in - At this moment I expect batman switch to eth1 > channel because it has real 100mbit/s speed. But batman doesn't > switch, because it detects eth0 as 100mbit/s too. > Therefore I override throughput of eth0, actually batman detects > incorrect speed on eth0.
If you have to configure the throughput manually why not configure the link with something like 5mbit/s instead of 100kbit/s ? Batman-adv does not care that this throughput is not exact. All that matters is provide input to the algorithm to allow batman-adv to make smart choices. Kind regards, Marek Lindner
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