[X4U] Airport Express/iMac/iPad network issues

[Paul Moortgat]

Jeff,

No problem with the iMac.  I can use DHCP for the net and get an 84...  
IP.
Can I use that external Base Station to use it with the iPad?  It's 89  
euro here.

Paul Moortgat

On 13 Oct 2010, at 01:13, Jeff Carruthers wrote:

>
> On Oct 12, 2010, at 5:38 PM, Paul Moortgat wrote:
>
>> Hi Andrew,
>>
>> I need to select the Airport option in Network if I want to use  
>> Wifi on the iPad.  It used to work until a few days ago.  It's an  
>> iPad 3G+Wifi.
>> The Airport Extreme is a card inside the iMac.  Unfortunately I  
>> can't send screen dumps to this group.  I can send them to you off  
>> line.
>> I also use DHCP but the address starts with 169....  Renew doesn't  
>> help.
>> 1) Where do I find the airport's WAN?
>> 2) The airport's LAN is 00:1c:c2:a4:40:09  (or is this wrong?)
>> 3) Yes
>> 4) Yes
>>
>> Paul Moortgat
>>
>> On 12 Oct 2010, at 20:50, Andrew Lynch wrote:
>>
>>> Hi Paul,
>>> I'm a little confused by this statement:
>>>
>>> "I got for a few days now a "Self-assigned IP address" message  
>>> when I select the Airport Extreme in our iMac to use it to connect  
>>> the iPad 3G."
>>>
>>> My ipad connects directly to the airport extreme, without  
>>> interaction with my iMac.  Can you perhaps rephrase your statement?
>>>
>>> Are you setting the LAN address of the airport to 192.168.0.1, or  
>>> the WAN address?  You probably need to leave the WAN address  
>>> alone, that address should come from your internet provider.
>>>
>>> I don't have my setup in front of me, but, in a nutshell, My  
>>> internet service provider (ISP) uses DHCP to provide a WAN address  
>>> to my airport extreme.  My airport extreme in turn uses DHCP to  
>>> provide LAN addresses to the devices inside my network.  Each  
>>> device is set to use DHCP to get an ip address.
>>>
>>> So, try to answer these questions:
>>> 1) Where does your airport get it's WAN (outside address)?
>>> 2) What is your airport's LAN (inside) address?
>>> 3) Is your airport extreme set to provide DHCP addresses to the  
>>> devices inside your network?
>>> 3) Are your inside devices set to use DHCP to get addresses?
>>>
>>> Clue: LAN addresses usually start with 192.168. or 10.0.
>>> Clue2: The airport extreme has a WAN address and a LAN address.  
>>> It's LAN address is usually 192.168.0.1 or 10.0.0.1.  The WAN  
>>> address is assigned by your ISP.
>>> Clue3: Two devices on the same network cannot have the same  
>>> address.  For example, if your Airport Extreme's LAN address is  
>>> 192.168.0.1, your ipad and imac should use 192.168.0.2 and  
>>> 192.168.0.3 (or some other address on the same 192.168.0. subnet).
>>>
>>> Clear as mud I'm sure......
>>>
>>> Good Luck,
>>> Drew
>
>
> Paul: how is your iMac connecting to the Internet?
>
> The most likely problem is that you don't have an active connection  
> to the internet, either because of a problem with your ISP, your  
> router, the modem your router is connected to (for cable or DSL) or  
> the ethernet cable.
>
> Also, there may be some confusion about terminology. The iMac's  
> internal wifi card is called an Airport Express, but there's a mini- 
> Airport basestation that goes by the same name and is an external  
> device that plugs into the wall and connects to a router. I'm  
> assuming you are not using the external airport express.
>
> Jeff
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