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

Dave Taht dave.taht at gmail.com
Sat Nov 16 11:55:59 EST 2013

On Thu, Nov 14, 2013 at 9:10 PM, Dave Taht <dave.taht at gmail.com> wrote:
> 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
> downstairs.home.lan
> upstairs.home.lan
> so you can have the databases be correctly separated.

I am incidentally allergic to guis. You can change all references to
home.lan to upstairs.home.lan (or whatever you choose) with:

sed -i s/home.lan/upstairs.home.lan/g /etc/config/*

you can then point your other dns properly with one line in /etc/config/dhcp

        list server '/downstairs.home.lan/' # well,
whatever name and ip you used

>> 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.
> http://tools.ietf.org/html/draft-cheshire-mdnsext-hybrid-02
> 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

Dave Täht

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

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