GRE Configuration - Update (requires Level 10 permission)

Use the GRE Configuration - Update page to modify a GRE Tunnel configuration.

Modify any of  the following GRE tunnel parameters:

1. In the Remote External Address boxes, type the IP address of the remote end of the GRE tunnel. 
2. In the Tunnel IP Address boxes, type the internal (local endpoint) IP address for GRE tunneling.
3. In the Tunnel IP Netmask boxes, type the netmask for internal IP address. 
4. In the Local External FastEthernet Index box, type the interface ID (1 or 2; interface 2 requires configuration) of the FastEthernet interface that the GRE tunnel will use.
5. In the Override Default DHCP Server Flag list, select one of the following:
   • On: Enable use of specified DHCP server (see step 6) rather than the global DHCP server configured for the controller.
   • Off: Disable usage of specified DHCP server and use the global DHCP server configured for the controller.
6. In the DHCP Server IP Address boxes, type the IP address of the DHCP relay server.
7. Click OK to save changes and exit the GRE Configuration-Add page.