Black Box LR1102A-T1/E1 - Manual (Page 101)

GRE Configuration Examples
103
Figure 36 Fig 2 Simple GRE configuration
18.3.1Configuring Site to Site Tunnel
To configure GRE in a site to site tunnel configuration:
Step 1: Configure the interface.
Step 2: Configure the tunnel.
Step 3: Configure the IP routes.
10.3.1.0
192.168.94.220
192.168.55.75
40.1.1.0
Blackbox> configure terminal
Blackbox/configure> interface bundle wan1
Blackbox/configure/interface/bundle wan1> link t1 1
Blackbox/configure/interface/bundle wan1> encapsulation ppp
Blackbox/configure/interface/bundle wan1> ip address 192.168.94.220
255.255.255.0
Blackbox/configure/interface/bundle wan1> exit
Blackbox/configure> interface tunnel t0
Blackbox/configure/interface/tunnel t0> ip 103.1.1.2 24
Blackbox/configure/interface/tunnel t0> tunnel source 192.168.94.220
Blackbox/configure/interface/tunnel t0> tunnel destination
192.168.55.75
Blackbox/configure/interface/tunnel t0> exit
Blackbox/configure> ip route 0.0.0.0 0.0.0.0 192.168.94.254
Blackbox/configure> ip route 40.1.1.0 24 t0