3Com 3C13636 Configuration Manual page 1253

3Com Router 3000 Ethernet Family
Configuration Guide
[3Com1-Serial1/0/0] quit
# Create interface Tunnel 1/0/0.
[3Com1] interface tunnel 1/0/0
# Configure IP address of interface Tunnel 1/0/0.
[3Com1-Tunnel1/0/0] ip address 10.1.2.1 255.255.255.0
# Configure encapsulation mode of tunnel.
[3Com1-Tunnel1/0/0] tunnel-protocol gre
# Configure source address of interface Tunnel1/0/0 (IP address of Serial1/0/0).
[3Com1-Tunnel1/0/0] source 192.13.2.1
# Configure destination address of interface Tunnel1/0/0 (IP address of Serial2/0/1 on
3Com2).
[3Com1-Tunnel1/0/0] destination 131.108.5.2
[3Com1-Tunnel1/0/0] quit
# Configure static route from 3Com1 to Group2 on interface Tunnel1/0/0.
[3Com1] ip route-static 10.1.3.0 255.255.255.0 tunnel 1/0/0
2) Configure Router 3Com2:
# Configure interface Ethernet 0/0/0.
[3Com2] interface ethernet 0/0/0
[3Com2-Ethernet0/0/0] ip address 10.1.3.1 255.255.255.0
[3Com2-Ethernet0/0/0] quit
# Configure interface Serial 2/0/1 (physical interface of Tunnel).
[3Com2] interface serial 1/0/1
[3Com2-Serial2/0/1] ip address 131.108.5.2 255.255.255.0
[3Com2-Serial2/0/1] quit
# Create interface Tunnel 2/0/0.
[3Com2] interface tunnel 2/0/0
# Configure IP address of interface Tunnel2/0/0.
[3Com2-Tunnel2/0/0] ip address 10.1.2.2 255.255.255.0
# Configure encapsulation mode of the tunnel.
[3Com2-Tunnel2/0/0] tunnel-protocol gre
# Configure source address of interface Tunnel 2/0/0 (IP address of Serial 2/0/1).
[3Com2-Tunnel2/0/0] source 131.108.5.2
# Configure destination address of interface Tunnel 2/0/0 (IP address of Serial 1/0/0 on
Router 3Com1).
[3Com2-Tunnel2/0/0] destination 192.13.2.1
[3Com2-Tunnel2/0/0] quit
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Chapter 3 Configuration of GRE