Setup STP, ether channel

​​​​setup topology
​​​​ p1 - s1
​​​​     /  \    
​​​​   s2 = s3
​​​​s: switch, p: pc

Options > Preferences > Port Labels Always Shown

1. stp config 40%

setup portfast, bpdu guard s1 to p1

Go into switch0 and open CLI

​​​​switch>en
​​​​Switch#conf t
​​​​Switch(config)#int fa0/1 
​​​​Switch(config-if)#spanning-tree portfast 
​​​​Switch(config-if)#spanning-tree bpduguard enable 
​​​​Switch(config-if)#exit
​​​​Switch(config)#spanning-tree mode rapid-pvst

change stp mode to rstp for s1,s2,s3

Go into switch1 and open CLI

​​​​switch>en
​​​​Switch#conf t
​​​​Switch(config)#spanning-tree mode rapid-pvst

Go into switch2 and open CLI

​​​​switch>en
​​​​Switch#conf t
​​​​Switch(config)#spanning-tree mode rapid-pvst

2. change root switch 40%

show root bridge, blocked ports

Go into switch0 and open CLI

​​​​Switch(config)#exit
​​​​Switch#show spanning-tree 

Go into switch1 and open CLI

​​​​Switch(config)#exit
​​​​Switch#show spanning-tree 

Go into switch2 and open CLI

​​​​Switch(config)#exit
​​​​Switch#show spanning-tree 

change root bridge

Go into switch0 and open CLI

​​​​Switch#conf t
​​​​Switch(config)#spanning-tree vlan 1 root primary

3. setup ether channel 20%

configure ether channel between s2,s3

Go into switch1 and open CLI

​​​​Switch#conf t
​​​​Switch(config)#int fa0/2
​​​​Switch(config-if)#channel1-group 1 mode on
​​​​Switch(config-if)#int fa0/3
​​​​Switch(config-if)#channel1-group 1 mode on

Go into switch2 and open CLI

​​​​Switch#conf t
​​​​Switch(config)#int fa0/2
​​​​Switch(config-if)#channel1-group 1 mode on
​​​​Switch(config-if)#int fa0/3
​​​​Switch(config-if)#channel1-group 1 mode on
​​​​Switch(config-if)#end
​​​​Switch#show spanning-tree 

Go into switch1 and open CLI

​​​​Switch(config-if)#end
​​​​Switch#show spanning-tree 

tags: Network Management Practice CSnote