3 SWITCH

三 三层交换

1 实验拓扑图

2 配置命令

1）s1配置：

enable

vlan database

vlan 10 name 10

vlan 20 name 20

exit

congfigure terminal

hostname s1

interface range fastethernet 0/1 – 3

switchport trunk encapsulation dot1q

no shutdown

exit

interface fastethernet 0/2

switchport access vlan 10

exit

interface fastethernet 0/3

switchport access vlan 20

exit

interface fastethernet 0/3

switchport mode trunk

2)s2配置：

enable

vlan database

vlan 10 name 10

vlan 20 name 20

exit

configure terminal

hostname s2

interface fastethernet 0/1

switchport mode trunk

no shutdown

exit

interface fastethernet 0/2

no switchport

ip address 192.168.3.1 255.255.255.0

no shutdown

exit

ip routing

interface vlan 10

ip address 192.168.1.1 255.255.255.0

no shutdown

exit

interface vlan 20

ip address 192.168.2.1 255.255.255.0

no shutdown

exit

router rip

network 192.168.1.0

network 192.168.2.0

network 192.168.3.0

version 2

3)r1配置：

enable

configure terminal

hostname r1

interface fastethernet 0/0

ip address 192.168.3.2 255.255.255.0

no shutdown

exit

interface fastethernet 1/0

ip address 192.168.4.1 255.255.255.0

no shutdown

exit

router rip

network 192.168.3.0

network 192.168.4.0

version 2

4)配置DHCP中继转发

interface vlan vlan 号

ip helper-address dhcpserver-address

3：查看配置

1） 查看路由表

show ip route

2)查看FIB表

show ip cef

3)查看邻接关系表

show adjacenly detail