Airport problem - No IP address?

[soupyjnr]

Hi everyone - im really frustrated!

I have had my wireless router for just over 5 years. I got my Mac just over a year ago and its been completely fine with the router - never, ever had a problem with it... until a few days ago

Basicly, my mac is connecting to the router, but there is no internet connection getting to the mac. When I go into Airport, then Open Network Preferences, and goto Airport, the circle beside Airport is yellow, and under it says No IP address. When I go into advanced, and goto TCP/IP, it is selected Using DHCP.

Does anybody know why this is doing this. Its working on my mum and brothers vista, just not my mac 🙁 Ive tried rebooting everything, and restoring factory settings... and ive no idea whats happening with it! If anybody can help, it really would be appreciated 😀

Thanks

 

[soupyjnr]

I have some more info. which might help to solve this problem! When I go into 192.168.1.1 (my routers home page) and go into Wireless, the Basic Wireless Settings, I changed the Wireless Channel to 8 - 2.447GHz. When I did that and saved the setting, the Airport option in Network went from Orange to Green, and now says Self-Assigned IP, and under were is says Status : On, it is saying Airport has a self-assigned IP address and may not be able to connect to the internet.

Does this help? Anybody have any ideas?

 

[1ne]

Even though on wireless G it shows 11 channels, but there are only 3 non overlapping channels. Channel 1, 6, 11. Try assigned a a static IP. IP=192.168.1.x 255.255.255.0 GW192.168.1.1 Give yourself a DNS 4.2.2.1. Then try to ping your GW. Then your DNS. If that works try pinging google.

Give that a go first.

 

[Jeffrosproto]

I had the same problem, I fixed it by restarting the Router and turning airport off and on.

 

[soupyjnr]

[/INDENT]

Even though on wireless G it shows 11 channels, but there are only 3 non overlapping channels. Channel 1, 6, 11. Try assigned a a static IP. IP=192.168.1.x 255.255.255.0 GW192.168.1.1 Give yourself a DNS 4.2.2.1. Then try to ping your GW. Then your DNS. If that works try pinging google.

Give that a go first.

Hi - thank you for the reply.

When I go into Basic Setup and try and select the Internet Connection Type and try and change it from Automatic Configeration - DHCP to Static IP, its not letting me change it. It just refreshes the page and then goes back to Automatic Configeration - DHCP?

--------------------------------

UPDATE :

Problem fixed! Apparenly my Mac wasnt picking up the IP address automatically and therefore it needed them put in automatically. Thanks for all your help 🙂

 

[ox4dboy]

I was able to fix this problem by:

1. Going to system preferences
2. Click on network
3. choose AirPort
4. click advanced button (bottom right)
5. click TCP/IP
6. click Renew DHCP Lease
7. click ok
8. click apply
9. go online

Note: I deleted the AirPort connection (in step 3) added a new AirPort connection (via + button in bottom left) before following these steps - if the steps above don't work, try removing/adding airport and try again.

 

[Doef]

Thanks for your answer, ox4dboy. That worked for me.

D