dhcpd trouble shooting utilities

[Gene Heskett]

On Tuesday 20 November 2012 14:43:40 Colin Law did opine:

> On 20 November 2012 17:02, Gene Heskett <gheskett at wdtv.com> wrote:
> > On Tuesday 20 November 2012 12:00:32 Colin Law did opine:
> >> On 19 November 2012 18:36, Gene Heskett <gheskett at wdtv.com> wrote:
> >> > Greetings;
> >> > 
> >> > I gave the missus a Nook Color a year ago for Christmas, set it up
> >> > to access my AP here in the house & even bought a book at the
> >> > time.
> >> > 
> >> > But then, since she uses the crossword generator in it more than
> >> > anything else, I disabled the radio to save on the battery life,
> >> > which w/o the radio can be a couple weeks.
> >> > 
> >> > But, I turned the radio back on, and while the nookcolor does
> >> > appear to negotiate the WPA2-PSK password stored just fine, but
> >> > then reports that dhcp is running forever.
> >> > 
> >> > So my question is, do we have any tools to analyze the dhcpd
> >> > traffic and show me whats wrong?  AFAIK its working for my lappy,
> >> > but it, from where it normally lives in the shop, would be coming
> >> > in thru another wirelass AP in the shop, so its requests for dhcp
> >> > service would actually be coming into what I think is the only
> >> > active server here via the routers WAN port, not the radio.
> >> > 
> >> > There is so much to know about this its easy to lose track of the
> >> > tree in all this forest of networking stuffs.  I suspect that
> >> > somehow, in attempting to improve the caching of dns lookups on
> >> > this, the main machine, and have somehow managed to have it
> >> > issuing a dhcpd response that clashes with the intended server in
> >> > this router/AP.
> >> 
> >> I have had situations where messages displayed made it look as if it
> >> was failing at the dhcp stage but actually it was not getting a good
> >> connection in the first place.  Try configuring it with a fixed ip
> >> address.  That will confirm (or otherwise) that it is dhcp that is
> >> failing.
> >> 
> >> Colin
> > 
> > Can a nook color do that?  I haven't noted anything in its menu's that
> > might lead to that ability.
> 
> Ah, ok, that may not be possible.  In that case have you got another
> wireless device that you can connect to the access point, with and
> without dhcp, to see what can be learnt from that?
> 
> Colin

My lappy can probably do that, but I'll need to find my round tuit first. 
:)  Its out in a cold shop.

Cheers, Gene
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