airport does not have an ip address and cannot connect to the internet

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Level 1

8 points

airport does not have an ip address and cannot connect to the internet

I have a problem with my macbookpro and connection to internet.
1 week ago my computer as stopped to connect to internet.
I was used connecting with my airport express, but at one point my macbook pro stopped receiving ip adress from interenet.
the message on the network connection is Airport is connected to the network. Airport is does not have an IP address and Cannot connect to the internet
I have try everything...:
the Airport is working becouse all the others computers inside on my office are working well with airport.
If I connect my computer with a cable I have the same problem.
I have reset and restart Airport and computer.
I have let my connection and computer disconnected and switched off for 24 our.
I have verifining that is not an hardware problem because I have installed a fresh OS on an external drive and when I boot from the external drive everything working well.
And I have been on other location (other offices or place where there is a wireless service) and I can't connect with old connection but I can with the new.
On the old installation all the connection on internet or lan seem impossible (gprs, modem, cable, airport, internal lan).
I have set manually the IP adress and everything... but still not working.
The OS is on boot installation 10.4.9
the machine is a Mac book pro 17 2.16 GHZ intel core duo with 2gb 667 Mhz.
My problem is that on the old installation I have a lot of software installed and will be take a lot of time doing all the new installation. I wondering if there is a way to recover the situation.
Any suggestion will be really appreciate...
Thx a lot

macbook pro 17, Mac OS X (10.4.9), g5 and g5 quad

Posted on Apr 21, 2007 7:13 AM

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Answer 1

Apr 21, 2007 8:39 AM in response to qwert000

I was used connecting with my airport express, but at one point my macbook pro stopped receiving ip adress from interenet.

Your base station is both a wifi access point and a routing device. It's the base station which leases you an ip address, if you use DHCP. Are you? Go to System Preferences->Network->Airport->TCP/IP and see. What are your settings?

I have set manually the IP adress and everything... but still not working.

If you set the IP address manually, you should not get the error message that Airport doesn't have an ip address. The thing is, there's more than just the IP address, there's the router's address, DNS servers, the subnet mask -- all these things should be set by DHCP. It sounds like they aren't, so let's make sure that's configured correctly first.

Powerbook G4, iMac (Intel), and tons of hardware sitting in the closet Mac OS X (10.4.9)

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Answer 2

qwert000 Author

Level 1

8 points

Apr 22, 2007 10:03 AM in response to philsmith_

Your base station is both a wifi access point and a
routing device. It's the base station which leases
you an ip address, if you use DHCP. Are you? Go to
System Preferences->Network->Airport->TCP/IP and see.
What are your settings?

If you set the IP address manually, you should not
get the error message that Airport doesn't have an ip
address. The thing is, there's more than just the IP
address, there's the router's address, DNS servers,
the subnet mask -- all these things should be set by
DHCP. It sounds like they aren't, so let's make sure
that's configured correctly first.

Powerbook G4, iMac
(Intel), and tons of hardware sitting in the closet
Mac OS X (10.4.9)

well.. Is setting on dhcp
I put the screen shot of the setup of my Airport on another forum. may be should help
http://forums.macrumors.com/showthread.php?p=3573679#post3573679

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Answer 3

BDAqua

Level 10

250,259 points

Apr 22, 2007 10:56 AM in response to qwert000

Does Airport Administration Utilty connect to your Bas Station?

Three other things I can think of trying...

#1> Get Applejack somehow...
http://www.versiontracker.com/dyn/moreinfo/macosx/19596

After installing, reboot holding down CMD+s, then when the prompt shows, type in...

applejack AUTO

Then let it do all 5 of it's things.

At least it'll eliminate some questions if it doesn't fix it.

#2> Try reinstalling the 10.4.8 or .9 COMBO Update.

#3> Archive & Install.

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Answer 4

qwert000 Author

Level 1

8 points

Apr 22, 2007 1:18 PM in response to BDAqua

Does Airport Administration Utilty connect to your
Bas Station?

Three other things I can think of trying...

#1> Get Applejack somehow...
http://www.versiontracker.com/dyn/moreinfo/macosx/1959
6

After installing, reboot holding down CMD+s, then
when the prompt shows, type in...

applejack AUTO

Then let it do all 5 of it's things.

At least it'll eliminate some questions if it doesn't
fix it.

#2> Try reinstalling the 10.4.8 or .9 COMBO Update.

#3> Archive & Install.

well... with my mac with the old installation I can't see the airport base, but with al others computers and with my new os on my macbook I can. I try the applejack but he say that i can't repair my system. so I guess thta Archive and Install sw the solution.
There is a way to preserve all my installed software reinstalling the os?
thanks

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Answer 5

Apr 22, 2007 1:30 PM in response to qwert000

The screenshots say a lot. They say you're connected to a wi-fi network, "Airport studio", and that ypu're configuring TCP/IP using DHCP. Furthermore, DHCP has failed to lease you an IP address or retreive any information. The next step is to ascertain why. What happens when you press "Renew DHCP lease"?

If nothing happens, "Airport studio" is probably misconfigured.

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Answer 6

qwert000 Author

Level 1

8 points

Apr 23, 2007 12:34 AM in response to philsmith_

The screenshots say a lot. They say you're connected
to a wi-fi network, "Airport studio", and that ypu're
configuring TCP/IP using DHCP. Furthermore, DHCP has
failed to lease you an IP address or retreive any
information. The next step is to ascertain why. What
happens when you press "Renew DHCP lease"?

If nothing happens, "Airport studio" is probably
misconfigured.

well, the strange is that all ohters computers that are connected on my studio with airport work well and when I have installed a fresh installation on an external hd of my os, it work perfectly. And my older os installation don't work on any wireless, cable, modem, or gprs connection on internet.
that is the mistery..:) and the reaso why I know that is an installation problem , some file corrupted or kind of virus.

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Answer 7

BDAqua

Level 10

250,259 points

Apr 22, 2007 2:16 PM in response to qwert000

There is a way to preserve all my installed software reinstalling the os?

An Archive & Install SHOULD preserve User data & apps, iirc

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