生成樹

生成樹的配置

配置如下

A
en
conf t
int range f0/1 - 3
switchport mode trunk
exit
vtp domain benet
vtp mode server
exit
vlan database
exit
vlan database
vlan 1
vlan 2
vlan 3
vlan 4
exit
conf t
spanning-tree vlan 1-2 root primary

B
en
conf t
int range f0/1 - 3
switchport mode trunk
exit
spanning-tree vlan 3-4 root primary

C
en
conf t
int range f0/1 - 2
switchport mode trunk

D
en
conf t
int range f0/1 - 2
switchport mode trunk

配置完成後

用show spanning-tree vlan  1/2/3/4

進行查看

(A是vlan1-2的根網橋，B是vlan3-4的根網橋。）