[Linux-aus] strange LAN congestion problem

[Chris Martin]

Hi Nick ..  I agree with Kevin and Graham, you are probably exhausting the
buffers/memory in the ADSL router/switch.  If the firmware for the Billion
has QoS I would look at enabling it.  Set the ADSL link bandwidth to be a
fraction (5-10%) lower than your link speed.  Usually low priority buffers
are discarded in favour of high priority packets, which has the tendency to
cause TCP to back off, and slowdown.  This is similar to the mechanism that
wondershaper uses (although not as accurate).  Set high priority to your
local LAN traffic.

I don't think that you can run openwrt on your Billion,  but if you have an
openwrt compatible device available, it will turn a little domestic router
in to a powerhouse and give you access to both QoS and wondershaper.

I have been running OpenWRT since 2005 and would highly recommend it.
 right now I am using a Dlink DIR-825


Cheers

----------------------------------------------------------
Chris Martin
m: +61 419 812 371
e: chris at martin.cc
----------------------------------------------------------



On 16 June 2014 21:17, Daniel Bryan <danbryan at gmail.com> wrote:

> On Mon, Jun 16, 2014 at 8:53 PM, Stephen Argent <steve at nullcon.org> wrote:
>
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>> As far as recommendations for a Linux router go, I've had a lot of
>> success with the MikroTik gear - and its relatively cheap. That is provided
>> you're not gonna make your own, and are after a home router style device.
>> Just a recommendation anyway :)
>>
>
> +1. I'm running a Mikrotik 450G, and after a few hours of initial futzing
> to get OpenWRT built and flashed it's been remarkably reliable. Haven't had
> any reliability issues in 12 months, except for the time I locked myself
> out of SSH after messing up a firewall rule.
>
> It's a lot less painful diagnosing problems in a home network if you can
> just hop into the router and run top and tcpdump.
>
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>
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