Alcatel-Lucent OmniSwitch 6860 Series

Configuring Spanning Tree Parameters Sample Spanning Tree Configuration
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 6-45
4 Change the bridge priority value for VLAN 255 on Switch D to 10 using the following command
(leave the priority for VLAN 255 on the other three switches set to the default value):
-> spantree vlan 255 priority 10
VLAN 255 on Switch D has the lowest Bridge ID priority value of all four switches, which qualifies it as
the Spanning Tree root VLAN for the VLAN 255 broadcast domain.
Note. To verify the VLAN 255 Spanning Tree configuration on each switch use the following show
commands. The following outputs are for example purposes only and not match values shown in the sample
network configuration:
-> show spantree vlan 255
Spanning Tree Parameters for Vlan 255
Spanning Tree Status : ON,
Protocol : IEEE Rapid STP,
mode : Per VLAN (1 STP per Vlan),
Priority : 32768 (0x8000),
Bridge ID : 8000-00:e0:b1:e7:09:a3,
Designated Root : 8000-00:e0:b1:e7:09:a3,
Cost to Root Bridge : 8,
Root Port : 1/1/48,
TxHoldCount : 3,
Topology Changes : 101,
Topology age : 01:05:30,
Topology Change Port : 1/1/48,
Current Parameters (seconds)
Max Age = 20,
Forward Delay = 15,
Hello Time = 2
Parameters system uses when attempting to become root
System Max Age = 20,
System Forward Delay = 15,
System Hello Time = 2
-> show spantree vlan 255 ports
Spanning Tree Port Summary for Vlan 1
Oper Path Desig Prim. Op Op Loop
Port St Cost Cost Role Port Cnx Edg Guard Desig Bridge ID Note
-------+----+-------+-----+----+-----+---+---+-----+----------------------+-----
1/1/1 FORW 100 8 DESG 1/1/1 PTP NO DIS 8000-e8:e7:32:a4:63:21
1/1/2 DIS 0 0 DIS 1/1/2 NS NO DIS 0000-00:00:00:00:00:00
1/1/4 DIS 0 0 DIS 1/1/4 NS NO DIS 0000-00:00:00:00:00:00
1/1/5 DIS 0 0 DIS 1/1/5 NS NO DIS 0000-00:00:00:00:00:00
1/1/6 DIS 0 0 DIS 1/1/6 NS NO DIS 0000-00:00:00:00:00:00
1/1/7 DIS 0 0 DIS 1/1/7 NS NO DIS 0000-00:00:00:00:00:00
1/1/8 DIS 0 0 DIS 1/1/8 NS NO DIS 0000-00:00:00:00:00:00
1/1/9 DIS 0 0 DIS 1/1/9 NS NO DIS 0000-00:00:00:00:00:00
1/1/12 DIS 0 0 DIS 1/1/12 NS NO DIS 0000-00:00:00:00:00:00