GRE Tunnel Configuration - Add (requires Level 10 permission)

Use the GRE Configuration - Add page (Configuration > Wired > GRE) to create a Generic Routing Encapsulation Tunnel to a remote location.

Configure the following GRE tunnel parameters:

1. In the GRE Name box, type the name of the GRE tunnel. This is a required, arbitrary name and it can be up to 32 alphanumeric characters long. It cannot contain spaces.
2. In the Remote External Address boxes, type the IP address of the remote end of the GRE tunnel. 
3. In the Tunnel IP Address boxes, type the IP address for the local end of the GRE tunnel.
4. In the Tunnel IP Netmask boxes, type the netmask for the local IP address. 
5. In the Local External FastEthernet Index box, type the interface ID (1 or 2; interface 2 requires configuration) of the FastEthernet interface that the tunnel will use.
6. In the Override Default DHCP Server Flag list, select one of the following:
   • On: Enable use of specified DHCP server (see step 7) rather than the global DHCP server configured for the controller.
   • Off: Disable usage of specified DHCP server and return to using global DHCP server configured for the controller.
7. In the DHCP Server IP Address boxes, type the IP address of the DHCP relay server.
8. Click OK to save changes and exit the GRE Configuration-Add page.

1. Click the ESS link in the Wireless group on the Navigation Bar to configure  an ESS profile for use with the GRE Tunnel.
2. Click Add  to open the ESS Profile - Add window.
3. Create the ESS profile as normal.
4. In the Tunnel Interface Type drop-down list, select the option GRE.
5. In the GRE Profile Tunnel Name, select the name of the GRE profile created in Step 1 above.
6. Click OK to save the GRE ESS profile and exit the window.