How to release IP address with airport express

[rxl125]

How can I obtain a new IP address with my airport express router, imac, and comcast.

Do I have to leave it unplugged for a long time?

[rxl125]

is there an ipconfig feature like windows has?

[kostia]

In the Network pane of System Preferences, there are two buttons below your list of network connections: Configure and Disconnect.

Click Configure. On the TCP/IP tab you have a button labeled "Renew DHCP lease." According to the help files (search for 'release ip address'), this is the same as ipconfig /release AND ipconfig /renew.

If you are set up to receive your IP address using DHCP, you can force your computer to release your current IP address and get a new one from your DHCP server.

Open System Preferences and click Network.
Choose your connection method from the Show pop-up menu (such as Built-in Ethernet or Airport).
Click TCP/IP and click Renew DHCP Lease.
This might be helpful in an environment where many computers use the same DHCP server, or the network administrator has set up a short DHCP lease time.

Check with your ISP or network administrator to find out if you need to renew your DHCP address.

[LarK]

the renew DHCP lease button does not release the ip information. It simply does and ipconfig /renew
-to release this information go into system preferences > network
-change the show menu to Network Port Configurations
-uncheck the box for method of connection (uncheck airport for wireless, built-in ethernet for ethernet connection, etc)
-click apply now
-check the box for the device again (i.e. airport)
-click apply now.

This information can be found at the apple website, here is a link
http://docs.info.apple.com/article.html?artnum=106879

[unsung]

In the Network pane of System Preferences, there are two buttons below your list of network connections: Configure and Disconnect.

Click Configure. On the TCP/IP tab you have a button labeled "Renew DHCP lease." According to the help files (search for 'release ip address'), this is the same as ipconfig /release AND ipconfig /renew.

If you are set up to receive your IP address using DHCP, you can force your computer to release your current IP address and get a new one from your DHCP server.

Open System Preferences and click Network.
Choose your connection method from the Show pop-up menu (such as Built-in Ethernet or Airport).
Click TCP/IP and click Renew DHCP Lease.
This might be helpful in an environment where many computers use the same DHCP server, or the network administrator has set up a short DHCP lease time.

Check with your ISP or network administrator to find out if you need to renew your DHCP address.



I did a search, sorry for bumping an old thread but this worked for me. Thank you.