Configuration procedure – H3C Technologies H3C S5560 Series Switches User Manual
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Figure 37 Network diagram
Configuration procedure
1.
Configure Device A:
# Create VLAN 100, and globally enable loop detection for the VLAN.
<DeviceA> system-view
[DeviceA] vlan 100
[DeviceA-vlan100] quit
[DeviceA] loopback-detection global enable vlan 100
# Configure GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 as trunk ports, and assign them
to VLAN 100.
[DeviceA] interface gigabitethernet 1/0/1
[DeviceA-GigabitEthernet1/0/1] port link-type trunk
[DeviceA-GigabitEthernet1/0/1] port trunk permit vlan 100
[DeviceA-GigabitEthernet1/0/1] quit
[DeviceA] interface gigabitethernet 1/0/2
[DeviceA-GigabitEthernet1/0/2] port link-type trunk
[DeviceA-GigabitEthernet1/0/2] port trunk permit vlan 100
[DeviceA-GigabitEthernet1/0/2] quit
# Configure the global loop protection action as shutdown.
[DeviceA] loopback-detection global action shutdown
# Set the loop detection interval to 35 seconds.
[DeviceA] loopback-detection interval-time 35
2.
Configure Device B:
# Create VLAN 100.
<DeviceB> system-view
[DeviceB] vlan 100
[DeviceB–vlan100] quit
GE1/0/1
Device A
Device B
Device C
GE1/0/2
VLAN 100