3Com MSR 50 Series Configuration Manual page 1597

GRE over IPv4 Tunnel Configuration Example 1597
[RouterA-Ethernet1/0] ip address 10.1.1.1 255.255.255.0
[RouterA-Ethernet1/0] quit
# Configure an IPv4 address for interface Serial 2/0, the physical interface for the
tunnel.
[RouterA] interface serial 2/0
[RouterA-Serial2/0] ip address 1.1.1.1 255.255.255.0
[RouterA-Serial2/0] quit
# Create an interface named Tunnel0.
[RouterA] interface tunnel 0
# Configure an IPv4 address for interface Tunnel0.
[RouterA-Tunnel0] ip address 10.1.2.1 255.255.255.0
# Configure the tunnel encapsulation mode.
[RouterA-Tunnel0] tunnel-protocol gre
# Configure the source address of interface Tunnel0 to be the IP address of Serial
2/0.
[RouterA-Tunnel0] source 1.1.1.1
# Configure the destination address of interface Tunnel0 to be the IP address of
Serial 2/1 on Router B.
[RouterA-Tunnel0] destination 2.2.2.2
[RouterA-Tunnel0] quit
# Configure a static route from Router A through interface Tunnel0 to Group 2.
[RouterA] ip route-static 10.1.3.0 255.255.255.0 tunnel 0
2 Configure Router B
# Configure an IPv4 address for interface Ethernet 1/0.
<RouterB> system-view
[RouterB] interface ethernet 1/0
[RouterB-Ethernet1/0] ip address 10.1.3.1 255.255.255.0
[RouterB-Ethernet1/0] quit
# Configure an IPv4 address for interface Serial 2/1, the physical interface for the
tunnel.
[RouterB] interface serial 2/1
[RouterB-Serial2/1] ip address 2.2.2.2 255.255.255.0
[RouterB-Serial2/1] quit
# Create an interface named Tunnel0.
[RouterB] interface tunnel 0
# Configure an IP address for interface Tunnel0.