H3C Technologies H3C S10500 Series Switches - Manual (Page 130)

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Figure 30 Network diagram for monitor link configuration
Device A
Device D Device B
GE
1/0
/1
GE
1/0
/2
GE
1/0
/1 GE
1/0
/1
GE
1/0
/2 GE
1/0
/2
Device C
GE
1/0
/1
GE
1/0
/2
Configuration procedure
1. Configure Device C.
# Create VLANs 1 through 30, map these VLANs to MSTI 1, and activate MST region configuration.
<DeviceC> system-view
[DeviceC] vlan 1 to 30
[DeviceC] stp region-configuration
[DeviceC-mst-region] instance 1 vlan 1 to 30
[DeviceC-mst-region] active region-configuration
[DeviceC-mst-region] quit
# Disable the spanning tree feature on GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 separately,
configure them as trunk ports, and assign them to VLANs 1 through 30.
[DeviceC] interface gigabitethernet 1/0/1
[DeviceC-GigabitEthernet1/0/1] undo stp enable
[DeviceC-GigabitEthernet1/0/1] port link-type trunk
[DeviceC-GigabitEthernet1/0/1] port trunk permit vlan 1 to 30
[DeviceC-GigabitEthernet1/0/1] quit
[DeviceC] interface gigabitethernet 1/0/2
[DeviceC-GigabitEthernet1/0/2] undo stp enable
[DeviceC-GigabitEthernet1/0/2] port link-type trunk
[DeviceC-GigabitEthernet1/0/2] port trunk permit vlan 1 to 30
[DeviceC-GigabitEthernet1/0/2] quit
# Create smart link group 1, and configure all the VLANs mapped to MSTI 1 as the protected VLANs for
smart link group 1.
[DeviceC] smart-link group 1
[DeviceC-smlk-group1] protected-vlan reference-instance 1
# Configure GigabitEthernet 1/0/1 as the master port and GigabitEthernet 1/0/2 as the slave port for
smart link group 1.
[DeviceC-smlk-group1] port gigabitethernet 1/0/1 master
[DeviceC-smlk-group1] port gigabitethernet 1/0/2 slave
# Enable the smart link group to transmit flush messages.
[DeviceC-smlk-group1] flush enable
[DeviceC-smlk-group1] quit
2. Configure Device A.