vlan的配置

 

 

pc1-5  ip 192.168.1.1-5    

Switch>en
Switch#conf t
Switch(config)#host sw1
sw1(config)#vlan 2
sw1(config-vlan)#name student
sw1(config-vlan)#exit
sw1(config)#vlan 3
sw1(config-vlan)#name teacher
sw1(config-vlan)#exit
sw1(config)#int fa 0/1
sw1(config-if)#switchport mode access
sw1(config-if)#switchport access vlan 2
sw1(config-if)#exit
sw1(config)#int fa 0/2
sw1(config-if)#swi mo acc
sw1(config-if)#swi acc vlan 3
sw1(config-if)#end
%SYS-5-CONFIG_I: Configured from console by console
sw1#show vlan brief

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/3, Fa0/4, Fa0/5, Fa0/6
                                                Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                Fa0/15, Fa0/16, Fa0/17, Fa0/18
                                                Fa0/19, Fa0/20, Fa0/21, Fa0/22
                                                Fa0/23, Fa0/24, Gig1/1, Gig1/2
2    student                          active    Fa0/1
3    teacher                          active    Fa0/2
1002 fddi-default                     active   
1003 token-ring-default               active   
1004 fddinet-default                  active   
1005 trnet-default                    active   

配置Trunk
sw1(config)#int fa 0/24
sw1(config-if)#switchport mode trunk
sw1(config-if)#switchport nonegotiate
sw1(config-if)#switchport trunk encapsulation dot1q
sw1(config-if)#switchport trunk allowed vlan 2,3

sw1#show int fa 0/24 swi
Name: Fa0/24
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: none

switch2配置和switch1一樣
pc1pc3pc5屬於vlan2    pc2pc4屬於vlan3

配置完後pc1能ping通pc3;pc2能ping通pc3
但其他都不能通pc5
pc5屬於本地vlan1，所以改一下使pc5劃到vlan2

sw1(config)#int fa 0/24
sw1(config-if)#switchport trunk native vlan 2

本實驗來源根據CCNA認證指南（640-802）崔北亮