H3C Technologies H3C S12500-X Series Switches - Manual (Page 195)

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Task Command
Display information about the service loopback group. display service-loopback group [ number ]
Service loopback group configuration example
Network requirements
All Ethernet ports on Device A support the tunnel service.
Assign Ten-GigabitEthernet 1/0/1 through Ten-GigabitEthernet 1/0/3 to a service loopback group to
loop GRE packets sent out by the device back to the device.
Configuration procedure
# Create service loopback group 1, and specify its service type as Tunnel.
<DeviceA> system-view
[DeviceA] service-loopback group 1 type tunnel
# Assign Ten-GigabitEthernet 1/0/1 through Ten-GigabitEthernet 1/0/3 to service loopback group 1.
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] port service-loopback group 1
[DeviceA-Ten-GigabitEthernet1/0/1] quit
[DeviceA] interface ten-gigabitethernet 1/0/2
[DeviceA-Ten-GigabitEthernet1/0/2] port service-loopback group 1
[DeviceA-Ten-GigabitEthernet1/0/2] quit
[DeviceA] interface ten-gigabitethernet 1/0/3
[DeviceA-Ten-GigabitEthernet1/0/3] port service-loopback group 1
[DeviceA-Ten-GigabitEthernet1/0/3] quit
# Create tunnel interface 1 operating in GRE mode, which will automatically reference service loopback
group 1.
[DeviceA] interface tunnel 1 mode gre
[DeviceA-Tunnel1]