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首先配置一下交換機(jī)
SC-2950>
SC-2950>en
SC-2950#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SC-2950(config)#config-register 0x2102
SC-2950(config)#end

添加三個VLAN
SC-2950#vlan data
SC-2950(vlan)#vlan 10 name v1
VLAN 10 added:
Name: v1
SC-2950(vlan)#vlan 20 name v2
VLAN 20 added:
Name: v2
SC-2950(vlan)#vlan 30 name v3
VLAN 30 added:
Name: v3
SC-2950(vlan)#exit
APPLY completed.
Exiting....

SC-2950#
劃分接口到各個VLAN
SC-2950#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SC-2950(config)#int fa0/1 //留給管理員
SC-2950(config-if)#switchport mode access
SC-2950(config-if)#sw acc vlan 10
SC-2950(config-if)#no shutdown
SC-2950(config-if)#exit

SC-2950(config)#int range f0/2 - 15
SC-2950(config-if-range)#sw mode acc
SC-2950(config-if-range)#sw acc vlan 20
SC-2950(config-if-range)#no sh
SC-2950(config-if-range)#exit
SC-2950(config)#int range f0/16 - 24
SC-2950(config-if-range)#sw mode acc
SC-2950(config-if-range)#sw acc vlan 30
SC-2950(config-if-range)#no sh
SC-2950(config-if-range)#exit

激活VLAN,并且給VLAN 10加個IP以便管理
SC-2950(config)#int vlan 10
SC-2950(config-if)#ip add 192.168.1.1 255.255.255.0
SC-2950(config-if)#no sh
SC-2950(config-if)#exit
SC-2950(config)#int vlan 20
SC-2950(config-if)#no sh
SC-2950(config-if)#exit
SC-2950(config)#int vlan 30
SC-2950(config-if)#no sh
SC-2950(config-if)#exit
將交換機(jī)指向網(wǎng)關(guān)
SC-2950(config)#ip default-gateway 192.168.1.254
SC-2950(config)#end
SC-2950#

檢測配置
SC-2950#sh vlan brief

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active
10 v1 active Fa0/1
20 v2 active Fa0/2, 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
30 v3 active Fa0/16, Fa0/17, Fa0/18, Fa0/19
Fa0/20, Fa0/21, Fa0/22, Fa0/23
Fa0/24
SC-2950#sh ip int b
Interface IP-Address OK? Method Status Prot
ocol
FastEthernet0/23 unassigned YES unset up down

FastEthernet0/24 unassigned YES unset up down

Vlan1 unassigned YES unset up down

Vlan10 192.168.1.1 YES manual up up

Vlan20 unassigned YES unset up up

Vlan30 unassigned YES unset up down
SC-2950#sh run
Building configuration...
Current configuration : 1482 bytes
...

!
interface FastEthernet0/24
switchport access vlan 30
!
interface Vlan1
no ip address
!
interface Vlan10
ip address 192.168.1.1 255.255.255.0
!
interface Vlan20
no ip address
!
interface Vlan30
no ip address
!
ip default-gateway 192.168.1.254
ip http server
!
...
保存配置
SC-2950#write
Building configuration...