Step 1:
Click APPlE button and go to System Preferences….
Step 2:
Click Network.
Step 3:
Click on Wi-Fi or Ethernet (Depends on which one is used) in the left side box, and click Advanced on the right side corner.
Step 4:
In the top options, select TCP/IP. If you get IP by Using DHCP, you can see Renew DHCP Lease button. Click it to renew the IP address.
A Buying Guide for Outdoor Wireless Network Extenders
the best outdoor router