To check that these settings are configured on your computer, refresh your IP address.
To do this:
On a Windows PC, select Start > Run, in the Run dialog box type cmd and click OK. At the command line prompt type in ipconfig /release, and then press . The current IP address is released, and the command prompt displays. At the command prompt, type in ipconfig /renew and press . The new IP address displays. Close the command window.
On a Mac, select System Preferences > Network > Built-in Ethernet > TCP/IP, then  select Using DHCP from the drop-down list, and click on Renew DHCP lease.
NOTE: Rebooting your computer is another way of renewing the IP address.