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

# Configure the current device as the root bridge of MSTI 4.

[DeviceC] stp instance 4 root primary

# Enable the spanning tree feature globally.

[DeviceC] stp global enable

5. Configure Device D:

# Enter MST region view, and configure the MST region name as example.

<DeviceD> system-view

[DeviceD] stp region-configuration

[DeviceD-mst-region] region-name example

# Map VLAN 10, VLAN 30, and VLAN 40 to MSTI 1, MSTI 3, and MSTI 4, respectively.

[DeviceD-mst-region] instance 1 vlan 10

[DeviceD-mst-region] instance 3 vlan 30

[DeviceD-mst-region] instance 4 vlan 40

# Configure the revision level of the MST region as 0.

[DeviceD-mst-region] revision-level 0

# Activate MST region configuration.

[DeviceD-mst-region] active region-configuration

[DeviceD-mst-region] quit

# Enable the spanning tree feature globally.

[DeviceD] stp global enable

Verifying the configuration

In this example, suppose that Device B has the lowest root bridge ID. As a result, Device B is elected as

the root bridge in MSTI 0.

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

MST ID Port Role STP State Protection

0 GigabitEthernet2/1/1 ALTE DISCARDING NONE

0 GigabitEthernet2/1/2 DESI FORWARDING NONE

0 GigabitEthernet2/1/3 ROOT FORWARDING NONE

1 GigabitEthernet2/1/1 DESI FORWARDING NONE

1 GigabitEthernet2/1/3 DESI FORWARDING NONE

3 GigabitEthernet2/1/2 DESI FORWARDING NONE

3 GigabitEthernet2/1/3 ROOT FORWARDING NONE

# Display brief spanning tree information on Device B.

[DeviceB] display stp brief

MST ID Port Role STP State Protection

0 GigabitEthernet2/1/1 DESI FORWARDING NONE

0 GigabitEthernet2/1/2 DESI FORWARDING NONE

0 GigabitEthernet2/1/3 DESI FORWARDING NONE

1 GigabitEthernet2/1/2 DESI FORWARDING NONE

1 GigabitEthernet2/1/3 ROOT FORWARDING NONE

3 GigabitEthernet2/1/1 DESI FORWARDING NONE