Configuration procedure – H3C Technologies H3C S7500E Series Switches User Manual

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Device C and Device D are smart link devices, and Device A, Device B, and Device E are

associated devices. Traffic of VLANs 1 through 30 on Device C and Device D are dually uplinked

to Device A.

Configure Smart Link on Device C and Device D for dual uplink backup.

Figure 8-2 Network diagram for single smart link group configuration

Configuration procedure

1) Configuration on Device C

# Create VLANs 1 through 30, map these VLANs to MSTI 1, and activate the MST region

configuration.

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 STP on GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 separately, and configure them as

trunk ports that permit VLANs 1 through 30.

[DeviceC] interface gigabitethernet 2/0/1

[DeviceC-GigabitEthernet2/0/1] undo stp enable

[DeviceC-GigabitEthernet2/0/1] port link-type trunk

[DeviceC-GigabitEthernet2/0/1] port trunk permit vlan 1 to 30

[DeviceC-GigabitEthernet2/0/1] quit

[DeviceC] interface gigabitethernet 2/0/2

[DeviceC-GigabitEthernet2/0/2] undo stp enable

[DeviceC-GigabitEthernet2/0/2] port link-type trunk

[DeviceC-GigabitEthernet2/0/2] port trunk permit vlan 1 to 30

[DeviceC-GigabitEthernet2/0/2] quit

# Create smart link group 1, and configure all VLANs mapped to MSTI 1 as the protected VLANs.

[DeviceC] smart-link group 1

[DeviceC-smlk-group1] protected-vlan reference-instance 1

# Configure GigabitEthernet 2/0/1 as the master port and GigabitEthernet 2/0/2 as the slave port for

smart link group 1.

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