R3303-HP HSR6800 Routers Layer 2 - LAN Switching Configuration Guide

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# Enable the spanning tree feature globally.
[RouterD] stp enable
Verifying the configuration:
In this example, suppose Router B has the lowest root bridge ID. As a result, Router B is elected as
the root bridge of MSTI 0.
You can use the display stp brief command to display brief spanning tree information on each
device after the network is stable.
# Display brief spanning tree information on Router A.
[RouterA] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet4/0/1 ALTE DISCARDING NONE
0 GigabitEthernet4/0/2 DESI FORWARDING NONE
0 GigabitEthernet4/0/3 ROOT FORWARDING NONE
1 GigabitEthernet4/0/1 DESI FORWARDING NONE
1 GigabitEthernet4/0/3 DESI FORWARDING NONE
3 GigabitEthernet4/0/2 DESI FORWARDING NONE
3 GigabitEthernet4/0/3 ROOT FORWARDING NONE
# Display brief spanning tree information on Router B.
[RouterB] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet4/0/1 DESI FORWARDING NONE
0 GigabitEthernet4/0/2 DESI FORWARDING NONE
0 GigabitEthernet4/0/3 DESI FORWARDING NONE
1 GigabitEthernet4/0/2 DESI FORWARDING NONE
1 GigabitEthernet4/0/3 ROOT FORWARDING NONE
3 GigabitEthernet4/0/1 DESI FORWARDING NONE
3 GigabitEthernet4/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Router C.
[RouterC] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet4/0/1 DESI FORWARDING NONE
0 GigabitEthernet4/0/2 ROOT FORWARDING NONE
0 GigabitEthernet4/0/3 DESI FORWARDING NONE
1 GigabitEthernet4/0/1 ROOT FORWARDING NONE
1 GigabitEthernet4/0/2 ALTE DISCARDING NONE
4 GigabitEthernet4/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Router D.
[RouterD] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet4/0/1 ROOT FORWARDING NONE
0 GigabitEthernet4/0/2 ALTE DISCARDING NONE
0 GigabitEthernet4/0/3 ALTE DISCARDING NONE
3 GigabitEthernet4/0/1 ROOT FORWARDING NONE
3 GigabitEthernet4/0/2 ALTE DISCARDING NONE
4 GigabitEthernet4/0/3 ROOT FORWARDING NONE