關(guān)于不同vlan之間通信的三種方式

1、不同vlan間的通信簡單配置1單臂路由(圖)環(huán)境：一臺路由器，一臺二層交換機，兩臺pc機二層交換機的配置一般模式：Switch輸入enable進(jìn)入特權(quán)模式：Switchenable輸入configure terminal進(jìn)入全局配置模式：Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z.創(chuàng)建vlan 10 和 vlan 20：Switch(config)#vlan 10Switch(config-vlan)#vlan 20Switch(config-vlan)# exit進(jìn)

2、入接口配置模式：Switch(config)#interface fastEthernet 0/1把0/1變成trunk口（默認(rèn)是access口）Switch(config-if)#switchport mode trunk%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to upSwitch(config-if)#

3、exit進(jìn)入接口配置模式分別把對應(yīng)的接口，加入對應(yīng)的vlan：Switch(config)#interface fastEthernet 1/1Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 10Switch(config-if)#interface fastEthernet 2/1Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 20到此二層交換機配置完畢！路由器的

4、配置：RouterRouterenableRouter#configure terminal Enter configuration commands, one per line. End with CNTL/Z.Router(config)#inter fas 0/0Router(config-if)#no ip address Router(config-if)#no shutdown 注意：單臂路由的配置父接口一定要no shutdown%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up%LINEPROTO-5-

5、UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to upRouter(config-if)#exitRouter(config)#int fas 0/0.10%LINK-5-CHANGED: Interface FastEthernet0/0.10, changed state to up%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.10, changed state to upRouter(config-subif)#enca

6、psulation dot1Q 10注意：在配置ip時一定要先封裝802.1q協(xié)議Router(config-subif)#ip address 192.168.10.1 255.255.255.0Router(config-subif)#no shutdown Router(config-subif)#int fas 0/0.20%LINK-5-CHANGED: Interface FastEthernet0/0.20, changed state to up%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.20,

7、 changed state to upRouter(config-subif)#ip address 192.168.20.1 255.255.255.0% Configuring IP routing on a LAN subinterface is only allowed if thatsubinterface is already configured as part of an IEEE 802.10, IEEE 802.1Q,or ISL vLAN.Router(config-subif)#encapsulation dot1Q 20Router(config-subif)#ip

8、 address 192.168.20.1 255.255.255.0Router(config-subif)#no shutdown Router(config-subif)#查看路由表：Router#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 e

9、xternal 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 routeGateway of last resort is not setC 192.168.10.0/24 is di

10、rectly connected, FastEthernet0/0.10C 192.168.20.0/24 is directly connected, FastEthernet0/0.20Router#PC0的配置：ip 192.168.10.10netmask 255.255.255.0gateway 192.168.10.1PC1的配置：ip 192.168.20.20netmask 255.255.255.0gateway 192.168.20.12.使用SVI實現(xiàn)VLAN間的通信（圖）環(huán)境：一臺三層交換機，兩臺pc機三層交換機的配置：Switchenable Switch#confi

11、gure terminal Enter configuration commands, one per line. End with CNTL/Z.創(chuàng)建vlan 10 20Switch(config)#vlan 10Switch(config-vlan)#vlan 20Switch(config-vlan)#exit配置SVI接口ipSwitch(config)#interface vlan 10%LINK-5-CHANGED: Interface Vlan10, changed state to upSwitch(config-if)#ip address 192.168.10.1 255.

12、255.255.0Switch(config-if)#no shutdown Switch(config-if)#interface vlan 20%LINK-5-CHANGED: Interface Vlan20, changed state to upSwitch(config-if)#ip address 192.168.20.1 255.255.255.0Switch(config-if)#no shutdown Switch(config-if)#exit改變接口模式并加入vlanSwitch(config)#interface fastEthernet 0/1Switch(conf

13、ig-if)#switchport mode access Switch(config-if)#switchport access vlan 10%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to upSwitch(config-if)#interface fastEthernet 0/2Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 20%LINEPROTO-5-UPDOWN: Lin

14、e protocol on Interface Vlan20, changed state to upSwitch(config-if)#看三層交換機的路由表：Switch#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

15、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 routeGateway of last resort is not setC 192.168.10.0/24 is directly connecte

16、d, Vlan10C 192.168.20.0/24 is directly connected, Vlan20Switch#兩主機的配置與單臂路由中兩主機的配置一樣3.跨交換機實現(xiàn)VLAN間的通信（圖）環(huán)境：一臺三層交換機，兩臺二層交換機，兩臺pc機三層交換機的配置(SW3)SwitchenableSwitch#configure terminal Enter configuration commands, one per line. End with CNTL/Z.創(chuàng)建vlan 10 、20 并設(shè)置ipSwitch(config)#vlan 10Switch(config-vlan)#vl

17、an 20Switch(config-vlan)#exitSwitch(config)#interface vlan 10%LINK-5-CHANGED: Interface Vlan10, changed state to upSwitch(config-if)#ip address 192.168.10.1 255.255.255.0Switch(config-if)#no shutdown Switch(config-if)#interface vlan 20%LINK-5-CHANGED: Interface Vlan20, changed state to upSwitch(conf

18、ig-if)#ip address 192.168.20.1 255.255.255.0Switch(config-if)#no shutdown Switch(config-if)#exit設(shè)置接口模式并加入相應(yīng)的vlan（注意trunk口的設(shè)置）Switch(config)#interface fastEthernet 0/1Switch(config-if)#switchport mode trunkSwitch(config-if)#interface fastEthernet 0/1Switch(config-if)#switchport access vlan 10%LINEPRO

19、TO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to upSwitch(config)#interface fastEthernet 0/2Switch(config-if)#switchport mode trunk Switch(config-if)#interface fastEthernet 0/2Switch(config-if)#switchport access vlan 20%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed s

20、tate to upSwitch#SW21的配置SwitchenableSwitch#configure terminal Enter configuration commands, one per line. End with CNTL/Z.Switch(config)#vlan 10Switch(config-vlan)#exitSwitch(config)#interface fastEthernet 0/1Switch(config-if)#switchport mode trunk%LINEPROTO-5-UPDOWN: Line protocol on Interface Fast

21、Ethernet0/1, changed state to down%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to upSwitch(config-if)#interface fastEthernet 1/1Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 10Switch(config-if)#exitSwitch(config)#SW22的配置SwitchSwit

22、chenSwitch#Switch#configure terEnter configuration commands, one per line. End with CNTL/Z.Switch(config-if)#inter fas 2/1Switch(config-if)#switchport mode trunk%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet2/1, changed state to down%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet2/1