[Cerowrt-devel] Recommendations for cerowrt multi-ap at home?

Dave Taht dave.taht at gmail.com
Fri Nov 15 00:10:16 EST 2013

On Thu, Nov 14, 2013 at 9:03 PM, Kelvin Edmison <kelvin at edmison.net> wrote:
> I've been experimenting with two WNDR3800s and meshing, and I'm starting to
> wonder if meshing is the right answer for a typical residential user who
> needs multiple APs.

Well, an alternative is to bridge or use WDS.

> My use case is a single cable internet connection, and a footprint that
> needs 2 APs to provide sufficient high-performance coverage.  I would like
> to provide guest and internal WiFi networks at both APs, so that both will
> be reasonably fast.
> I initially set up mesh mode according to wiki directions, and have it
> mostly up and running.  I can ping from a machine connected to the second
> router, across the mesh, to the first router and out to the internet.
> The problems I am experiencing are that
> 1) the second router by default isn't set to forward DNS requests to the
> first router, so I have to configure each of the interfaces manually to
> supply the IP of the primary router as the DNS server

? that's one line

> 2) both routers try to maintain DNS for home.lan and do not exchange
> information.

That is something of a problem. The right thing here would be to use subnets



so you can have the databases be correctly separated.

> 3) the Macs in the household go a little nuts when they change networks as
> they seem to detect the mdns repeater as a conflict when trying to assume
> ownership of the hostname on the new network.  My Mac's hostname has changed
> repeatedly to avoid the conflict and is now tesla-71.local.

stuart cheshire is starting up a project to make dns-sd with a hybrid
proxy work right, so we can git rid of the klugey multicast forwarding
causing this problem (on WAY more networks than just ceros, this is a
problem on many campus's worldwide) and actually use the defined
standard for dealing with multiple mdns subnets.


some code already exists as fallout of the homenet wg and was
demonstrated at ietf. It works...

It will be a huge relief to have this problem resolved sometime in the
near future. developers wanted!

> Is mesh the right way to go here?  What are best practices for tackling
> these issues?
> Thanks,
>   Kelvin
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Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html

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