Example: Configuring multiple smart link groups load sharing
Network configuration
As shown in Figure 39:
Device C is a Smart Link device. Device A, Device B, and Device D are associated devices. Traffic of VLANs 1 through 200 on Device C is dually uplinked to Device A by Device B and Device D.
Implement dual uplink backup and load sharing on Device C. Traffic of VLANs 1 through 100 is uplinked to Device A by Device B. Traffic of VLANs 101 through 200 is uplinked to Device A by Device D.
Figure 39: Network diagram
Procedure
![[IMPORTANT: ]](images/important.png) | IMPORTANT: By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface. | |
Configure Device C:
# Create VLAN 1 through VLAN 200.
<DeviceC> system-view [DeviceC] vlan 1 to 200
# Map VLANs 1 through 100 to MSTI 1, and VLANs 101 through 200 to MSTI 2.
[DeviceC] stp region-configuration [DeviceC-mst-region] instance 1 vlan 1 to 100 [DeviceC-mst-region] instance 2 vlan 101 to 200
# Activate the MST region configuration.
[DeviceC-mst-region] active region-configuration [DeviceC-mst-region] quit
# Shut down FortyGigE 1/0/1.
[DeviceC] interface fortygige 1/0/1 [DeviceC-FortyGigE1/0/1] shutdown
# Disable the spanning tree feature on the port.
[DeviceC-FortyGigE1/0/1] undo stp enable
# Configure the port as a trunk port.
[DeviceC-FortyGigE1/0/1] port link-type trunk
# Assign the port to VLAN 1 through VLAN 200.
[DeviceC-FortyGigE1/0/1] port trunk permit vlan 1 to 200 [DeviceC-FortyGigE1/0/1] quit
# Configure FortyGigE 1/0/2 in the same way FortyGigE 1/0/1 is configured.
[DeviceC] interface fortygige 1/0/2 [DeviceC-FortyGigE1/0/2] shutdown [DeviceC-FortyGigE1/0/2] undo stp enable [DeviceC-FortyGigE1/0/2] port link-type trunk [DeviceC-FortyGigE1/0/2] port trunk permit vlan 1 to 200 [DeviceC-] quit
# Create smart link group 1, and configure all 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 as the primary port and FortyGigE 1/0/2 as the secondary port for smart link group 1.
[DeviceC-smlk-group1] port fortygige 1/0/1 primary [DeviceC-smlk-group1] port fortygige 1/0/2 secondary
# Enable role preemption in smart link group 1, enable flush message sending, and configure VLAN 10 as the transmit control VLAN.
[DeviceC-smlk-group1] preemption mode role [DeviceC-smlk-group1] flush enable control-vlan 10 [DeviceC-smlk-group1] quit
# Create smart link group 2, and configure all VLANs mapped to MSTI 2 as the protected VLANs for smart link group 2.
[DeviceC] smart-link group 2 [DeviceC-smlk-group2] protected-vlan reference-instance 2
# Configure FortyGigE 1/0/1 as the secondary port and as the primary port for smart link group 2.
[DeviceC-smlk-group2] port fortygige 1/0/2 primary [DeviceC-smlk-group2] port secondary
# Enable role preemption in smart link group 2, enable flush message sending, and configure VLAN 110 as the transmit control VLAN.
[DeviceC-smlk-group2] preemption mode role [DeviceC-smlk-group2] flush enable control-vlan 110 [DeviceC-smlk-group2] quit
# Bring up FortyGigE 1/0/1 and FortyGigE 1/0/2.
[DeviceC] interface fortygige 1/0/1 [DeviceC-FortyGigE1/0/1] undo shutdown [DeviceC-FortyGigE1/0/1] quit [DeviceC] interface fortygige 1/0/2 [DeviceC-FortyGigE1/0/2] undo shutdown [DeviceC-FortyGigE1/0/2] quit
Configure Device B:
# Create VLAN 1 through VLAN 200.
<DeviceB> system-view [DeviceB] vlan 1 to 200
# Configure FortyGigE 1/0/1 as a trunk port.
[DeviceB] interface fortygige 1/0/1 [DeviceB-] port link-type trunk
# Assign the port to VLANs 1 through 200.
[DeviceB-FortyGigE1/0/1] port trunk permit vlan 1 to 200
# Enable flush message receiving and configure VLAN 10 and VLAN 110 as the receive control VLANs on the port.
[DeviceB-FortyGigE1/0/1] smart-link flush enable control-vlan 10 110 [DeviceB-FortyGigE1/0/1] quit
# Configure FortyGigE 1/0/2 as a trunk port.
[DeviceB] interface fortygige 1/0/2 [DeviceB-FortyGigE1/0/2] port link-type trunk
# Assign the port to VLANs 1 through 200.
[DeviceB-FortyGigE1/0/2] port trunk permit vlan 1 to 200
# Disable the spanning tree feature on the port.
[DeviceB-] undo stp enable
# Enable flush message receiving and configure VLAN 10 and VLAN 110 as the receive control VLANs on the port.
[DeviceB-FortyGigE1/0/2] smart-link flush enable control-vlan 10 110 [DeviceB-FortyGigE1/0/2] quit
Configure Device D:
# Create VLAN 1 through VLAN 200.
<DeviceD> system-view [DeviceD] vlan 1 to 200
# Configure FortyGigE 1/0/1 as a trunk port.
[DeviceD] interface fortygige 1/0/1 [DeviceD-FortyGigE1/0/1] port link-type trunk
# Assign the port to VLANs 1 through 200.
[DeviceD-FortyGigE1/0/1] port trunk permit vlan 1 to 200
# Enable flush message receiving and configure VLAN 10 and VLAN 110 as the receive control VLANs on the port.
[DeviceD-FortyGigE1/0/1] smart-link flush enable control-vlan 10 110 [DeviceD-FortyGigE1/0/1] quit
# Configure FortyGigE 1/0/2 as a trunk port.
[DeviceD] interface fortygige 1/0/2 [DeviceD-FortyGigE1/0/2] port link-type trunk
# Assign the port to VLANs 1 through 200.
[DeviceD-FortyGigE1/0/2] port trunk permit vlan 1 to 200
# Disable the spanning tree feature on the port.
[DeviceD-FortyGigE1/0/2] undo stp enable
# Enable flush message receiving and configure VLAN 10 and VLAN 110 as the receive control VLANs on the port.
[DeviceD-FortyGigE1/0/2] smart-link flush enable control-vlan 10 110 [DeviceD-] quit
Configure Device A:
# Create VLAN 1 through VLAN 200.
<DeviceA> system-view [DeviceA] vlan 1 to 200
# Configure FortyGigE 1/0/1 as a trunk port.
[DeviceA] interface [DeviceA-FortyGigE1/0/1] port link-type trunk
# Assign the port to VLANs 1 through 200.
[DeviceA-FortyGigE1/0/1] port trunk permit vlan 1 to 200
# Enable flush message receiving and configure VLAN 10 and VLAN 110 as the receive control VLANs on the port.
[DeviceA-FortyGigE1/0/1] smart-link flush enable control-vlan 10 110 [DeviceA-FortyGigE1/0/1] quit
# Configure FortyGigE 1/0/2 in the same way FortyGigE 1/0/1 is configured.
[DeviceA] interface fortygige 1/0/2 [DeviceA-FortyGigE1/0/2] port link-type trunk [DeviceA-FortyGigE1/0/2] port trunk permit vlan 1 to 200 [DeviceA-FortyGigE1/0/2] smart-link flush enable control-vlan 10 110 [DeviceA-FortyGigE1/0/2] quit
Verifying the configuration
# Display the smart link group configuration on Device C.
[DeviceC] display smart-link group all Smart link group 1 information: Device ID : 000f-e23d-5af0 Preemption mode : Role Preemption delay: 1(s) Control VLAN : 10 Protected VLAN : Reference Instance 1 Member Role State Flush-count Last-flush-time ----------------------------------------------------------------------------- FGE1/0/1 PRIMARY ACTIVE 5 16:45:20 2012/04/21 FGE1/0/2 SECONDARY STANDBY 1 16:37:20 2012/04/21 Smart link group 2 information: Device ID : 000f-e23d-5af0 Preemption mode : Role Preemption delay: 1(s) Control VLAN : 110 Protected VLAN : Reference Instance 2 Member Role State Flush-count Last-flush-time ----------------------------------------------------------------------------- FGE1/0/2 PRIMARY ACTIVE 5 16:45:20 2012/04/21 FGE1/0/1 SECONDARY STANDBY 1 16:37:20 2012/04/21
# Display the flush messages received on Device B.
[DeviceB] display smart-link flush Received flush packets : 5 Receiving interface of the last flush packet : FortyGigE1/0/2 Receiving time of the last flush packet : 16:25:21 2012/04/21 Device ID of the last flush packet : 000f-e23d-5af0 Control VLAN of the last flush packet : 10