關于不同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進入特權模式：Switch>enable輸入configure terminal進入全局配置模式：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

2、(config-vlan)# exit進入接口配置模式：Switch(config)#interface fastEthernet 0/1把0/1變成trunk口（默認是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

3、upSwitch(config-if)#exit進入接口配置模式分別把對應的接口，加入對應的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 vla

4、n 20到此二層交換機配置完畢！路由器的配置：Router>Router>enableRouter#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

5、, changed state to up%LINEPROTO-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 st

6、ate to upRouter(config-subif)#encapsulation 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 protoco

7、l on Interface FastEthernet0/0.20, 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)#encapsulati

8、on dot1Q 20Router(config-subif)#ip 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,

9、 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 lev

10、el-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 connected, FastEthernet0/

11、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：Switch>enable Switch#configure termi

12、nal 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 25

13、5.255.255.0Switch(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(co

14、nfig-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: L

15、ine 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    &#

16、160;  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   &#

17、160;   * - 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 connected, Vlan10C    192.168.20.0/24 is directly connect

18、ed, 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)Switch>enableSwitch#configure terminal Enter configuration commands, one per line.  End with CNTL/Z.創(chuàng)建vlan 10 、 20 并設置ipSwitch(config)#vlan 10Switch(config-vlan)#vlan 20Switch(config-vlan)#exitS

19、witch(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(config-if)#ip address 192.168.20.1

20、 255.255.255.0Switch(config-if)#no shutdown Switch(config-if)#exit設置接口模式并加入相應的vlan（注意trunk口的設置）Switch(config)#interface fastEthernet 0/1Switch(config-if)#switchport mode trunkSwitch(config-if)#interface fastEthernet 0/1Switch(config-if)#switchport access vlan 10%LINEPROTO-5-UPDOWN: Line protocol on

21、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 state to upSwitch#SW21的配置Switch

22、>enableSwitch#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 FastEthernet0/1, c

23、hanged 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Switch>Switch>enSwitch#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 p