HP FlexFabric 12900 Series Configuration Manual page 121

Configure PVST to meet the following requirements:
• Packets of a VLAN are forwarded along the spanning trees of the VLAN.
VLAN 10, VLAN 20, and VLAN 30 are terminated on the distribution layer devices, and VLAN 40
•
is terminated on the access layer devices.
The root bridge of VLAN 10 and VLAN 20 is Device A.
•
• The root bridge of VLAN 30 is Device B.
The root bridge of VLAN 40 is Device C.
•
Figure 29 Network diagram
Configuration procedure
1. Configure VLANs and VLAN member ports. (Details not shown.)
Create VLAN 10, VLAN 20, and VLAN 30 on both Device A and Device B.
Create VLAN 10, VLAN 20, and VLAN 40 on Device C.
Create VLAN 20, VLAN 30, and VLAN 40 on Device D.
Configure the ports on these devices as trunk ports and assign them to related VLANs.
2. Configure Device A:
# Set the spanning tree mode to PVST.
<DeviceA> system-view
[DeviceA] stp mode pvst
# Configure the device as the root bridge of VLAN 10 and VLAN 20.
[DeviceA] stp vlan 10 20 root primary
# Enable the spanning tree feature globally and in VLAN 10, VLAN 20, and VLAN 30.
[DeviceA] stp global enable
[DeviceA] stp vlan 10 20 30 enable
3. Configure Device B:
# Set the spanning tree mode to PVST.
<DeviceB> system-view
[DeviceB] stp mode pvst
# Configure the device as the root bridge of VLAN 30.
[DeviceB] stp vlan 30 root primary
# Enable the spanning tree feature globally and in VLAN 10, VLAN 20, and VLAN 30.
[DeviceB] stp global enable
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