[Commotion-discuss] distribution of load among gateways and speed gains?, , (Dan Staples) (Josh King)

[Dan Staples]

I'm curious about this as well.

On 06/03/2014 09:31 AM, john coleman wrote:
> josh,
> 
> 	Following up on the scenario you describe in the paragraph copied below, I tracked down the OLSR setting for upstream and downstream speed.  Can you point me in the direction of the setting(s) to "set every other node in the network to take that into account when choosing a gateway"?
> I assume it's on the OLSR Daemon page but I'm not finding anything obvious.  
> thanks,
> 
> john
> 
> commotion-discuss-request at lists.chambana.net wrote the following on 6/2/2014 11:00 AM:
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sun, 01 Jun 2014 21:34:38 -0400
>> From: Josh King <jking at opentechinstitute.org>
>> To: Dan Staples <danstaples at opentechinstitute.org>
>> Cc: commotion-discuss at lists.chambana.net
>> Subject: Re: [Commotion-discuss] distribution of load among gateways
>> 	and speed gains?, (Dan Staples)
>> Message-ID: <538BD4AE.3040509 at opentechinstitute.org>
>> Content-Type: text/plain; charset="utf-8"
>>
> 
>>
>> The first, which is: can OLSR take gateway bandwidth into account when
>> it selects a gateway? This is actually something that OLSRv1 can do,
>> though we don't enable it by default as it's relatively new and fairly
>> complex. OLSRv1 has SmartGateway, which we enable by default and which
>> uses IP-over-IP tunnels in order to select and use gateways in such a
>> way that it helps to avoid breaking connections when a new gateway
>> becomes 'closer' (you have a better path to it) than your old gateway.
>> SmartGateway also provides parameters that are disabled by default for
>> tuning whether the capacity of the gateway is taken into account when
>> selecting which gateway to use (i.e., whether to sometimes use a fat
>> pipe that is further away than a thin pipe that is closer). However, the
>> values that a gateway advertises are not dynamic (OLSR has no inherent
>> way of 'knowing' how much bandwidth its upstream link has) so the values
>> it uses are upstream and downstream bandwidth parameters set manually in
>> the configuration file. So if you knew the speed of a particular
>> connection, you could set it manually in the config file and set every
>> other node in the network to take that into account when choosing a gateway.
>>
> 
> 
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Dan Staples

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