H3C Technologies H3C S12500-X Series Switches - Manual (Page 178)

167
Task Command Remarks
Display IPv6 information about
tunnel interface. display ipv6 interface [ tunnel
[ number ] ] [ brief ]
For more information about this
command, see Layer 3—IP Services
Command Reference.
Support for the display ipv6
interface tunnel command depends
on the device model.
Clear tunnel interface statistics.
reset counters interface [ tunnel
[ number ] ]
For more information about this
command, see Layer 3—IP Services
Command Reference.
GRE configuration examples
GRE over IPv4 tunnel configuration example
Network requirements
Group 1 and Group 2 are two private IPv4 networks. The two networks both use private network
addresses and belong to the same VPN. Establish a GRE tunnel between Switch A and Switch B to
interconnect the two private IPv4 networks Group 1 and Group 2.
Figure 63 Network diagram
Configuration procedure
Before the following configurations, configure an IP address for each interface, and make sure Switch A
and Switch B can reach each other.
1. Configure Switch A:
# Create service loopback group 1, and configure the service type as tunnel.
<SwitchA> system-view
[SwitchA] service-loopback group 1 type tunnel
# Add port Ten-GigabitEthernet 1/0/3 to service loopback group 1.
[SwitchA] interface Ten-GigabitEthernet 1/0/3
[SwitchA-Ten-GigabitEthernet1/0/3] port service-loopback group 1
[SwitchA-Ten-GigabitEthernet1/0/3] quit
# Create a tunnel interface Tunnel 1, and specify the tunnel mode as GRE over IPv4.
[SwitchA] interface tunnel 1 mode gre
# Configure an IP address for the tunnel interface.
IPv4
Group 2
IPv4
Group 1
XGE1/0/1
Vlan-int100
10.1.1.1/24
XGE1/0/1
Vlan-int100
10.1.3.1/24
Tunnel1
10.1.2.1/24
XGE1/0/2
Vlan-int101
1.1.1.1/24 XGE1/0/2
Vlan-int101
2.2.2.2/24
Internet
GRE tunnel
Tunnel1
10.1.2.2/24
Switch A Switch B
Service Loopback port
XGE1/0/3 XGE1/0/3