[Commotion-dev] static BSSID?
L. Aaron Kaplan
aaron at lo-res.org
Thu May 17 15:16:53 UTC 2012
On May 13, 2012, at 4:08 AM, Hans-Christoph Steiner wrote:
>
> My guess is that this is not a good idea to include in the madwifi driver, since it goes against how the Ad-hoc standard is supposed to work, and it would hinder interoperability with other implementations outside of madwifi (other Linux drivers, Windows, BSD, Mac OS X, etc.)
>
> But for mesh use, this makes perfect sense from what I can see since more mesh nodes on the same SSID mean a better network, versus with standard Ad-hoc, multiple networks with the same SSID would mean interference, both on the wifi level, and things like multiple DHCP servers, etc.
>
Maybe we mean the same thing but it came across differently or I am simply nit-picking now.
But as it is written here:
"what I can see since more mesh nodes on the same SSID mean a better network"
is not true
I would say the more nodes on *different* channels but somehow connected to each other (LAN), the better the network.
Use cable whenever you can :) It keeps those darn radio waves contained hehe.
I think I have a very very neat solution for this. Can show it to you next time we meet.
a.
> .hc
>
> On May 12, 2012, at 9:57 PM, Josh King wrote:
>
>> BSSID in an ad-hoc network definitely should be statically set in order
>> to avoid network cell partitioning problems. I remember that hashing
>> the SSID was a proposed solution for this in the madwifi driver, but I
>> don't know if it was ever implemented (I vaguely recall some objection
>> to this as a bad idea, but I cannot for the life of me find the
>> reference to that argument, or think myself of why it might not be a
>> good idea). In any event, there's an old patch posted for the madwifi
>> driver that provides some sample code that could provide some guidance
>> w/ respect to hashing:
>>
>> http://permalink.gmane.org/gmane.linux.drivers.madwifi.devel/4787
>>
>> On Sat 12 May 2012 09:02:40 PM EDT, Jeremy Lakeman wrote:
>>> No, we haven't chosen a hash function at all.
>>>
>>> On Sun, May 13, 2012 at 3:27 AM, Hans-Christoph Steiner
>>> <hans at guardianproject.info> wrote:
>>>>
>>>> That's a really nice, tight idea. I like it. Do you have an algorithm for it yet?
>>>>
>>>> .hc
>>>>
>>>> On May 11, 2012, at 10:06 PM, Jeremy Lakeman wrote:
>>>>
>>>>> I propose that the BSSID is generated as a hash of the SSID. This way
>>>>> each mesh network will have a unique, but static BSSID without needing
>>>>> the user to know it.
>>>>>
>>>>> On Sat, May 12, 2012 at 3:33 AM, Hans-Christoph Steiner
>>>>> <hans at guardianproject.info> wrote:
>>>>>>
>>>>>> The trickiest thing for the user of the OlsrMeshTether app remains the ad-hoc network associating. If a bunch of phones are starting up at the same time, they can easily start associating with themselves in clusters. Then there is multiple meshes that can't talk to each other.
>>>>>>
>>>>>> It seems a simple solution to this is to just hard-code the BSSID for Commotion in general as a default, then allow people to change this if they really want to. I propose using CC:CC:CC:CC:CC:CC as the static BSSID.
>>>>>>
>>>>>> Is there any reason why we wouldn't want to use a static BSSID as the default?
>>>>>>
>>>>>> .hc
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>>>>>>
>>>>
>>>
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>>
>> --
>> Josh King
>>
>> "I am an Anarchist not because I believe Anarchism is the final goal,
>> but because there is no such thing as a final goal." -Rudolf Rocker
>>
>
>
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