啓用生成樹命令(spanning-tree)

(1)啓用生成樹:                 spanning-tree vlan vlan-list(vlan號)
 

(2)配置交換機爲根網橋:   spanning-tree vlan vlan-list root primary (指定根網橋)| secondary(備用根網橋)

 
(3)修改交換機的優先級:   spanning-tree vlan vlan-list priority bridge-priority(網橋優先級)

 
(4)修改端口路徑成本:      spanning-tree vlan vlan-list cost cost(成本)
 
(5)修改端口優先級:          spanning-tree vlan vlan-list port-priority priority端口優先級)

 
(6) 配置上行速鏈路:         spanning-tree uplinkfast(上行鏈路)

 
(7)配置速端口:                 spanning-tree portfast(速端口)

 
(8)查看生成樹:                 show spanning-tree

 
(9)查看某個VLAN的生成樹詳細信息:show spanning-tree vlan vlan-id detail
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