[上課筆記] router 切 vlan

1. PC上改subnet mask為255.255.255.0
2. PC上設default gateway
   vlan10的DG=10.1.1.254
   vlan20的DG=10.1.2.254
   vlan30的DG=10.1.3.254
3. 拉一個router並接線至back bone switch
4. switch上接router介面為trunk
   sw(config)#int gi 1/1
   -if)#switchport mode trunk
5. router上fa0/0要打開並在上面建立子介面
   (config)#int fa0/0
   -if)#noshutdown
   -if)#exit
   (config)#int fa 0/0.10
   -subif)#encapsulation dot1q 10
   -subif)#ip address 10.1.1.254 255.255.255.0
   -subif)#exit
   (config)#int fa 0/0.20
   -subif)#encapsulation dot1q 20
   -subif)#ip address 10.1.2.254 255.255.255.0
   -subif)#exit
   (config)#int fa 0/0.30
   -subif)#encapsulation dot1q 30
   -subif)#ip address 10.1.3.254 255.255.255.0
   -subif)#exit
6. config)#int fa 0/1.1
   encapsulation dot1q 1 native