Specifications

Switch Services 5-45
4. Click OK to save the contents of the screen and return to the main GRE Tunnels screen.
5. Click Cancel to exit the screen without updating the properties of the existing GRE tunnel.
5.6.2 Adding a New GRE Tunnel
If modifying an existing tunnel does not provide an adequate solution for your network, consider creating a
new tunnel.
To create a new GRE tunnel:
1. Select Services > GRE Tunnels from the main menu tree.
2. Click the Add button from the bottom of the screen.
3. Configure the properties of the new GRE tunnel based on the following user-defined parameters.
Destination IP Traffic received on a GRE tunnel will be forwarded to MUs based on the Destination IP
address defined.
Interface IP Modify the network IP address (if necessary) used to route GRE packets to their destination
address.
Subnet Define the subnet address used to route GRE tunnel packets between end-points. Each GRE
tunnel must have a unique subnet to function properly and independent of one another.
Time-to-live Modify the period of time (in seconds) packets are kept alive between tunnel destinations.
The defined interval ensures IP reachability between the tunnel end-points.
Name Define a numerical name for the tunnel. This value cannot be modified (using the Edit
function) once originally created for a new tunnel.
Source IP Define the IP address used in the src-IP field of the IP header when packets sent out through
the tunnel interface.
Destination IP Traffic received on a GRE tunnel will be forwarded to MUs based on this Destination IP
address.
Interface IP Define the network IP address used to route GRE packets to their destination address.