[Bloat] Wireless router configuration

[Bloat] Wireless router configuration

[Seth Teller]

Hello bloat fighters,

Jim G. wrote me off-list:

   "[Y]ou can't adjust the cable modem; you can use your router
    (maybe) to evade the buffers there, by adjusting bandwidth
    shaping to keep the buffers from filling.  That's what I've
    done: my latencies are now about 10-20ms to MIT, even under load."

Can someone state more specifically what should be adjusted on
my wireless router?  (It's a Netgear Wireless-N 150 WNR1000v2.)

Can't find an answer to this question at:

   http://gettys.wordpress.com/bufferbloat-faq/

Thanks,

Seth

Re: [Bloat] Wireless router configuration

[Jim Gettys]

On 02/01/2011 12:10 PM, Seth Teller wrote:
>
> Hello bloat fighters,
>
> Jim G. wrote me off-list:
>
> "[Y]ou can't adjust the cable modem; you can use your router
> (maybe) to evade the buffers there, by adjusting bandwidth
> shaping to keep the buffers from filling. That's what I've
> done: my latencies are now about 10-20ms to MIT, even under load."
>
> Can someone state more specifically what should be adjusted on
> my wireless router? (It's a Netgear Wireless-N 150 WNR1000v2.)
>
>
Basic instructions are here:

http://gettys.wordpress.com/2010/12/08/bufferbloat-mitigations/

We should move that page over into the bufferbloat.net wiki, and start 
specific instructions for different routers linked from it.

In short, you are looking in the router for something called QOS or 
bandwidth shaping, that allow you to set the upstream and downstream 
bandwidth.

By limiting the bandwidth to less than what the ISP has provisioned, you 
can prevent the bloated buffers from filling.

Since you have an N router, make sure your laptop is similarly equipped, 
and if you ensure you have enough bandwidth, you'll then not have other 
problems in your laptop or in the router around the 802.11 link.

How to attack those problems is found in:

http://gettys.wordpress.com/2010/12/13/mitigations-and-solutions-of-bufferbloat-in-home-routers-and-operating-systems/

I believe Dave has converted both pages; I'm not sure they are linked 
into the wiki yet.
			- Jim