1.創(chuàng)建vlan，配置access接口
s1/s2/s3:vlan batch 10 20
2.在s1上配置E0/0/2和E0/0/3為access，并劃分到相應的vlan
s1:int e0/0/2
s1-e0/0/2:port default vlan 10
s1:int e0/0/3
s1-e0/0/2:port default vlan 20
3.在s2上配置E0/0/3和E0/0/4為access，并劃分到相應的vlan
s2:int e0/0/3
s2-e0/0/3:port default vlan 10
s2:int e0/0/4
s2-e0/0/4:port default vlan 20
4.在s1上配置E0/0/1為trunk接口，允許vlan10，vlan20通過
s1:int e0/0/1
s1-e0/0/1:port link-type trunk
s1-e0/0/1:port trunk allow-pass vlan 10 20
5.在s2上配置E0/0/2為trunk接口，允許vlan10，vlan20通過
s2:int e0/0/2
s2-e0/0/2:port link-type trunk
s2-e0/0/2:port trunk allow-pass vlan 10 20
6.在s3上配置G0/0/1,G0/0/2為trunk接口，允許所有vlan通過
s3:int G0/0/1
s3-G0/0/1:port link-type trunk
s3-G0/0/1:port trunk allow-pass vlan all
s3:int G0/0/2
s3-G0/0/2:port link-type trunk
s3-G0/0/2:port trunk allow-pass vlan all
