On 01/03/2013 12:14 PM, Marek Lindner wrote:
> On Thursday, January 03, 2013 23:01:07 Jan Lühr wrote:
>>> Ah! You failed to mention this part in your initial email.
>>>
>>> The behavior is easily explained: batman-adv does not switch gateway
>>> whenever a new gateway is found (even if it is a better gateway) unless
>>> the selection class is on fast or late switching.
>>
>> It is. - Sorry, forgot to mention:
>> Freifunk-b0487acb2d58:~# batctl gw_mode
>> client (selection class: 1)
>>
>> => 1 -> fast connection consider the gateway's advertised throughput as
>> well as the link quality towards the gateway
>
> You did mention you were using selection class 1. I was referring to your
> test
> in which you turn on/off your best gateway. As I explained in my previous
> mail: batman-adv does not switch the gateway once it has chosen a gateway
> unless you select fast or late switching as selection class. Selection class
> 1
> does not fall into this category which means a gateway reselection only
> happens if the currently selected gateway disappears.
Marek, could you please clarify this?
>From the man page I don't see an option that would behave as Jan (and I) seem
>to be expecting it to work. That is: switch to a better gateway - with more
>bandwidth and comparable link quality - when it's available.
gw_mode|gw [off|client|server] [sel_class|bandwidth]
[...]
If the node is a gateway client the parameter will decide which
criterias to consider when the batman-adv module has to choose
between different internet connections announced by the afore-
mentioned servers.
default: 20 -> late switch (TQ 20)
examples: 1 -> fast connection
consider the gateway's advertised
throughput as well as the link quality
towards the gateway
2 -> stable connection
chooses the gateway with the best link
quality and stick with it (ignore the
advertised throughput)
3 -> fast switch connection
chooses the gateway with the best link
quality but switches to another gateway
as soon as a better one is found
XX -> late switch connection
chooses the gateway with the best link
quality but switches to another gateway
as soon as a better one is found which
is at least XX TQ better than the cur-
rently selected gateway (XX has to be a
number between 3 and 256).
Would mode 3 accomplish this fast switching? It doesn't mention if this mode
will consider advertised throughput or not; only selection class 1 mentions
throughput.
--
NicoEchániz
