[WOT] Warning - long winded discussion - was Re: Apple iPad announcement evokes yawn

Kay C Lan lan.kc.macmail at gmail.com
Fri Mar 9 10:54:04 EST 2012


On Fri, Mar 9, 2012 at 1:36 PM, Jerry Jensen <jhj at jhj.com> wrote:

> Which device is serving DHCP? Where does it get ITS IP#? How are the DHCP
> served addresses set up? Be sure there is only ONE DHCP server on your
> network. Everything else should bridge.
>
> Jerry,

The TimeCapsule issues the LAN DHCP IPs and it get's it's WAN IP from a ISP
provided modem. The two Airport Expresses are set to 'Extend a wireless
network'.

Richard,

As stated before the current range of IP addresses (set in the TimeCapsule
via Airport Utility - with the Expresses set to 'Extend a wireless network'
mode there are no further setting available) is set to 30 a comfortable
buffer over the number of devices. I don't think there is any point in
setting it to 200 as basically what happens is, for instance, my iPhone
always gets the same 10.x.x.xx IP allocated to it, if there are 10 devices
on the network it gets a 169.xx.xx.xx IP and I can't do anything, as soon
as someone logs off, if I switch the iPhone WiFi off and back on, it will
be allocated the 10.x.x.xx DHCP IP it normally has. This is the same be it
a desktop, PB, whatever.

Note, I don't manually specify IP addresses, although I have tried it and
it doesn't seem to make any difference. I leave the TimeCapsule to
automatically assign IPs and it just seems to always allocate the same
number to the same device. At this stage I've never seen (not that I
thoroughly looked every single time) the last couple of IP address in the
range allocated to any device - the TimeCapsule appears to have started
with lowest number in the range and sequentually allocated numbers to each
and every device. I don't run out of numbers, I just don't get the ones I'm
suppose too.

Thanks



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