[GRLUG] DD-WRT DHCP/IP address problem

[Dave Chiodo]

This article also gives a good overview, and also has info if you want to
make some of the wired ports part of the "other" network:

http://www.ciscopress.com/articles/article.asp?p=1730493


On Sun, Apr 17, 2016 at 2:23 PM, Dave Chiodo <megadave at gmail.com> wrote:

> It sounds like you just have two wireless AP's (even they are both on the
> same hardware) that are on the same LAN, and the two DHCP networks are
> stepping on each other - both receive requests, and the client takes the
> assignment from whichever reply it gets first.
>
> I found this which describes how to make it work - the "separate bridge"
> is an essential part. If you didn't do that, that's the problem. If it
> worked before, it was out of random luck:
>
> http://www.alexlaird.com/2013/03/dd-wrt-guest-wireless/
>
> On Sun, Apr 17, 2016 at 2:07 PM, John-Thomas Richards <jtr at jrichards.org>
> wrote:
>
>> On Sun, Apr 17, 2016 at 12:35:59PM -0400, Dave Chiodo wrote:
>> > Are you sure the two virtual wireless networks are associated with
>> separate
>> > VLANS with broadcast domains fully isolated from each other?
>>
>> I'm not sure what that means fully. I added a virtual interface that
>> worked fine for months, then stopped working.
>>
>> > What you describe sounds like what would happen with two DHCP servers on
>> > the same LAN, where its essentially a race which one responds first
>> when a
>> > client makes a request.
>>
>> I'm not really sure of much, except this: it was working then suddenly
>> it stopped working all the time. Sometimes disconnecting and
>> reconnecting would result in a right address. Nothing changed on the
>> router (no configuration changes); it just stopped working properly. The
>> virtual interface does not have a separate configuration for IP address
>> range (and subnet).
>> --
>> J-T
>> -----
>> Absurdity, n.: A statement or belief manifestly inconsistent with one's
>> own opinion.
>> Ambrose Bierce, (1842-1914) "The Devil's Dictionary"
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>
>
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