R0106-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V7)

• Device C and Device D work at the access layer.

Configure PVST to meet the following requirements:

• Packets of VLAN 10, VLAN 20, VLAN 30, and VLAN 40 are forwarded along the spanning trees

of VLAN 10, VLAN 20, VLAN 30, and VLAN 40.

• 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 as Device A.

• The root bridge of VLAN 30 as Device B.

• The root bridge of VLAN 40 as Device C.

Figure 21 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.

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