Dell S4820T, Configuration Manual

Page: 786 / 1178

extend system-id
Example of Viewing the Extend System ID in a PVST+ Configuration
Dell(conf-pvst)#do show spanning-tree pvst vlan 5 brief
VLAN 5
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32773, Address 0001.e832.73f7
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32773 (priority 32768 sys-id-ext 5 ), Address 0001.e832.73f7
We are the root of Vlan 5
Configured hello time 2, max age 20, forward delay 15
PVST+ Sample Configurations
The following examples provide the running configurations for the topology shown in the previous
illustration.
Example of PVST+ Configuration (R1)
interface TenGigabitEthernet 1/22
no ip address
switchport
no shutdown
!
interface TenGigabitEthernet 1/32
no ip address
switchport
no shutdown
!
protocol spanning-tree pvst
no disable
vlan 100 bridge-priority 4096
interface Vlan 100
no ip address
tagged TenGigabitEthernet 1/22,32
no shutdown
!
interface Vlan 200
no ip address
tagged TenGigabitEthernet 1/22,32
no shutdown
!
interface Vlan 300
no ip address
tagged TenGigabitEthernet 1/22,32
no shutdown
!
protocol spanning-tree pvst
no disable
vlan 100 bridge-priority 4096
Example of PVST+ Configuration (R2)
interface TenGigabitEthernet 2/12
no ip address
switchport
no shutdown
!
interface TenGigabitEthernet 2/32
no ip address
786
Per-VLAN Spanning Tree Plus (PVST+)