Motorola WS5100 用户手册

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4. Click 

to save the contents of the screen and return to the main GRE Tunnels screen.

5. Click

to exit the screen without updating the properties of the existing 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

> 

from the main menu tree.

2. Click the 

button from the bottom of the screen. 

3. Configure the properties of the new GRE tunnel based on the following user-defined parameters. 

Traffic received on a GRE tunnel will be forwarded to MUs based on the Destination IP 
address defined.

Modify the network IP address (if necessary) used to route GRE packets to their destination 
address.

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.

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.

Define a numerical name for the tunnel. This value cannot be modified (using the Edit 
function) once originally created for a new tunnel.

Define the IP address used in the src-IP field of the IP header when packets sent out through 
the tunnel interface.

Traffic received on a GRE tunnel will be forwarded to MUs based on this Destination IP 
address.

Define the network IP address used to route GRE packets to their destination address.