Virtual Private Networks (VPN) Generic Routing Encapsulation (GRE)
Digi TransPort WR Routers User Guide
223
Command line
To create a GRE tunnel, use the gre command. For example:
1. Configure the GRE tunnel peer IP address or domain name:
digi.router> gre 1 peer 47.23.78.32
2. Configure the GRE tunnel IP address and mask:
digi.router> gre 1 ip-address 10.10.0.2
digi.router> gre 1 mask 255.255.255.252
3. (Optional) Configure the GRE key:
digi.router> gre 1 key 1
4. Enable the GRE tunnel by setting the state to on:
digi.router> gre 1 state on
5. Add a route for the remote network:
digi.router> route 1 destination 10.1.2.0
digi.router> route 1 mask 255.255.255.0
digi.router> route 1 interface gre1
For more information, see the route command.
6. Add an IP filter to allow packets to be forwarded to the local network:
digi.router> ip-filter 1 description “Forward rule for GRE 1”
digi.router> ip-filter 1 src gre1
digi.router> ip-filter 1 dst lan1
digi.router> ip-filter 1 protocol any
digi.router> ip-filter 1 state on
For more information, see the ip-filter command.
7. Save the configuration:
digi.router> save config
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