三层交换机实现VLAN间通信（附视频）
拓扑如下：
实验步骤：
任务描述：通过三层交换机的路由接口，实现VLAN间通信。注意开启三层交换机上路由功能。
在Switch0上配置管理VLAN：
Switch0>
Switch0>enable
Switch0#configure terminal
Switch0(config)#interface range g1/1-2
Switch0(config)#switchport mode trunk
Switch0(config)#vtp domain jsjgs
Changing VTP domain name from null to jsjgs
Switch0(config)#vlan 10
Switch0(config-vlan)#name HR
Switch0(config-vlan)#exit
Switch0(config)#vlan 20
Switch0(config-vlan)#name engineer
Switch0(config-vlan)#exit
Switch0(config)#vlan 30
Switch0(config-vlan)#name market
Switch0(config-vlan)#end
Switch0#show vtp status
VTP Version : 2
Configuration Revision :3
Maximum VLANs supported locally : 255
Number of existing VLANs : 8
VTP Operating Mode : Server
VTP Domain Name : jsjgs
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x 0A 0x 3C 0x10 0x59 0x3E 0x41 0x 7A 0x 6F
Configuration last modified by 0.0.0 .0 at 3-1-93 00:12:47
Local updater ID is 0.0.0 .0 (no valid interface found)
Switch0#Switch0#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, 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, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22
10 HR active Fa0/23
20 engineer active Fa0/24
30 market active
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
Switch0#
在交换机switch1上将相应端口添加到VLAN中
Switch1#configure terminal
Switch1(config)#interface range f0/1-15
Switch1(config-if-range)#Switch1port mode access
Switch1(config-if-range)#Switch1port access vlan 10
Switch1(config-if-range)#exit
Switch1(config)#interface range f0/16-22
Switch1(config-if-range)#Switch1port mode access
Switch1(config-if-range)#Switch1port access vlan 20
Switch1(config-if-range)#end
Switch1#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/23, Fa0/24, Gig1/2
10 HR active Fa0/1, 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
20 engineer active Fa0/16, Fa0/17, Fa0/18, Fa0/19
Fa0/20, Fa0/21, Fa0/22
30 market active
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
Switch1#
同样在Switch2完成相应操作：
Switch2#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/23, Fa0/24, Gig1/1
10 HR active
20 engineer active Fa0/16, Fa0/17, Fa0/18, Fa0/19
Fa0/20, Fa0/21, Fa0/22
30 market active Fa0/1, 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
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
Switch2#
至此，二层配置完成。
接下来完成三层通信所需要的配置：
在交换机Switch0上，设置相关接口turnk模式：
Switch0#configure terminal
Switch0(config)#interface f0/22
Switch0(config-if)#switchport mode access
Switch0(config-if)#switchport access vlan 10
Switch0(config-if)#exit
Switch0(config)#interface f0/23
Switch0(config-if)#switchport mode access
Switch0(config-if)#switchport access vlan 20
Switch0(config-if)#exit
Switch0(config)#interface f0/24
Switch0(config-if)#switchport mode access
Switch0(config-if)#switchport access vlan 30
Switch0(config-if)#end
Switch0#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, 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, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21
10 HR active Fa0/22
20 engineer active Fa0/23
30 market active Fa0/24
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
Switch0#
在三层交换机上启用路由接口，配置IP地址：
Switch>enable
Switch#configure terminal
Switch(config)#hostname SwitchL3
SwitchL3(config)#interface f0/22
SwitchL3(config-if)#no switchport
SwitchL3(config-if)#ip address 192.168.1.254 255.255.255.0
SwitchL3(config-if)#no shutdown
SwitchL3(config-if)#exit
SwitchL3(config)#interface f0/23
SwitchL3(config-if)#no switchport
SwitchL3(config-if)#ip address 192.168.2.254 255.255.255.0
SwitchL3(config-if)#no shutdown
SwitchL3(config-if)#exit
SwitchL3(config)#interface f0/24
SwitchL3(config-if)#no switchport
SwitchL3(config-if)#ip address 192.168.3.254 255.255.255.0
SwitchL3(config-if)#no switchport
SwitchL3(config-if)#exit
SwitchL3(config)#ip routing
SwitchL3(config)#end
SwitchL3#show ip rou
SwitchL3#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF , IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
C 192.168.1.0/24 is directly connected, FastEthernet0/22
C 192.168.2.0/24 is directly connected, FastEthernet0/23
C 192.168.3.0/24 is directly connected, FastEthernet0/24
SwitchL3#
在主机上设置相应的网关：
视频如下
（全部下载后一同解压）