H3C S6850 Series Configuration Guide

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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
[DeviceB] stp vlan 10 20 30 enable
4. Configure Device C:
# Set the spanning tree mode to PVST.
<DeviceC> system-view
[DeviceC] stp mode pvst
# Configure the device as the root bridge of VLAN 40.
[DeviceC] stp vlan 40 root primary
# Enable the spanning tree feature globally and in VLAN 10, VLAN 20, and VLAN 40.
[DeviceC] stp global enable
[DeviceC] stp vlan 10 20 40 enable
5. Configure Device D:
# Set the spanning tree mode to PVST.
<DeviceD> system-view
[DeviceD] stp mode pvst
# Enable the spanning tree feature globally and in VLAN 20, VLAN 30, and VLAN 40.
[DeviceD] stp global enable
[DeviceD] stp vlan 20 30 40 enable
Verifying the configuration
When the network is stable, you can use the display stp brief command to display brief
spanning tree information on each device.
# Display brief spanning tree information on Device A.
[DeviceA] display stp brief

H3C S6850 Series Specifications

General

Brand	H3C
Model	S6850 Series
Category	Switch
Language	English