《數(shù)據(jù)網(wǎng)絡(luò)組建》PPT課件

1、主講人：丁 蓉 VLAN技術(shù)的原理與配置上海電子信息職業(yè)技術(shù)學(xué)院數(shù)據(jù)網(wǎng)絡(luò)組建課程目標目錄CONTENTS三層交換實現(xiàn)三層交換實現(xiàn)VLAN間通信間通信單臂路由實現(xiàn)單臂路由實現(xiàn)VLAN間通信間通信實驗實驗020103 部署了VLAN的傳統(tǒng)交換機不能實現(xiàn)不同VLAN間的二層報文轉(zhuǎn)發(fā)，因此必須引入路由技術(shù)來實現(xiàn)不同VLAN間的通信。VLAN路由可以通過二層交換機配合路由器來實現(xiàn)，也可以通過三層交換機來實現(xiàn)。前言學(xué)完本課程后，您應(yīng)該能：l掌握VLAN間通信的應(yīng)用場景l(fā)掌握VLAN間通信的工作原理l掌握VLAN間通信的基本配置VLAN 100SWAVLAN 200lVLAN在分割廣播域的同時也限制了不同V

2、LAN間的主機進行二層通信的能力。VLAN的局限性一、單臂路由實現(xiàn)VLAN間通信Page 6SWARTA主機A主機BVLAN 2VLAN 3l在二層交換機上配置VLAN，每一個VLAN使用一條獨占的物理鏈路連接到路由器的一個接口上。單臂路由實現(xiàn)VLAN間通信VLAN路由-每個VLAN一個物理連接主機ASWA主機BTrunkG0/0/1.1G0/0/1.2VLAN 2VLAN 3GW:192.168.2.254GW:192.168.3.254RTAl將交換機和路由器之間的鏈路配置為Trunk鏈路，并且在路由器上創(chuàng)建子接口以支持VLAN路由。192.168.2.254192.168.3.254RT

3、AVLAN路由-單臂路由單臂路由實現(xiàn)VLAN間通信主機ASWARTA主機BG0/0/1VLAN 2VLAN 3SWAvlan batch 2 3SWA-GigabitEthernet0/0/1port link-type trunkSWA-GigabitEthernet0/0/1port trunk allow-pass vlan 2 3SWA-GigabitEthernet0/0/2port link-type accessSWA-GigabitEthernet0/0/2port default vlan 2 SWA-GigabitEthernet0/0/3port link-type ac

4、cessSWA-GigabitEthernet0/0/3port default vlan 3192.168.3.1/24192.168.2.1/24G0/0/2G0/0/3G0/0/1配置單臂路由單臂路由實現(xiàn)VLAN間通信G0/0/1.1G0/0/1.2RTAinterface GigabitEthernet0/0/1.1RTA-GigabitEthernet0/0/1.1dot1q termination vid 2RTA-GigabitEthernet0/0/1.1ip address 192.168.2.254 24 RTA-GigabitEthernet0/0/1.1arp broa

5、dcast enableRTAinterface GigabitEthernet0/0/1.2RTA-GigabitEthernet0/0/1.2dot1q termination vid 3RTA-GigabitEthernet0/0/1.2ip address 192.168.3.254 24 RTA-GigabitEthernet0/0/1.2arp broadcast enable192.168.2.254/24192.168.3.254/24主機ASWARTA主機BG0/0/1VLAN 2VLAN 3192.168.3.1/24192.168.2.1/24G0/0/2G0/0/3單臂

6、路由實現(xiàn)VLAN間通信Host Aping 192.168.3.1Ping 192.168.3.1: 32 data bytes, Press Ctrl_C to breakFrom 192.168.3.1: bytes=32 seq=1 ttl=127 time=15 msFrom 192.168.3.1: bytes=32 seq=2 ttl=127 time=15 msFrom 192.168.3.1: bytes=32 seq=3 ttl=127 time=32 msFrom 192.168.3.1: bytes=32 seq=4 ttl=127 time=16 msFrom 192.

7、168.3.1: bytes=32 seq=5 ttl=127 time=31 ms- 192.168.3.1 ping statistics - 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 15/21/32 ms單臂路由實現(xiàn)VLAN間通信配置驗證二、三層交換實現(xiàn)VLAN間通信主機A主機D主機B主機CVLAN 2VLAN 3GW:192.168.2.254GW:192.168.3.254GW:192.168.2.254GW:192.168.3.254l為每個VLA

8、N創(chuàng)建一個VLANIF接口作為網(wǎng)關(guān)。VLANIF 2: 192.168.2.254/24VLANIF 3: 192.168.3.254/24SWA三層交換實現(xiàn)VLAN間通信VLAN路由-三層交換主機ASWA主機BVLAN 2VLAN 3192.168.2.2/24192.168.3.2/24G0/0/1G0/0/2SWAvlan batch 2 3SWA-GigabitEthernet0/0/1port link-type accessSWA-GigabitEthernet0/0/1port default vlan 2 SWA-GigabitEthernet0/0/2port link-ty

9、pe accessSWA-GigabitEthernet0/0/2port default vlan 3VLANIF 2: 192.168.2.254/24VLANIF 3: 192.168.3.254/24三層交換實現(xiàn)VLAN間通信配置三層交換主機ASWA主機BVLAN 2VLAN 3192.168.2.2/24192.168.3.2/24G0/0/1G0/0/2SWAinterface vlanif 2SWA-Vlanif2ip address 192.168.2.254 24 SWA-Vlanif2quitSWAinterface vlanif 3 SWA-Vlanif3ip addre

10、ss 192.168.3.254 24 SWA-Vlanif3quitVLANIF 2: 192.168.2.254/24VLANIF 3: 192.168.3.254/24配置三層交換三層交換實現(xiàn)VLAN間通信Host Aping 192.168.3.2Ping 192.168.3.2: 32 data bytes, Press Ctrl_C to breakFrom 192.168.3.2: bytes=32 seq=1 ttl=127 time=15 msFrom 192.168.3.2: bytes=32 seq=2 ttl=127 time=15 msFrom 192.168.3.2: bytes=32 seq=3 ttl=127 time=32 msFrom 192.168.3.2: bytes=32 seq=4 ttl=127 time=16 msFrom 192.168.3.2: bytes=32 seq=5 ttl=127 time=31 ms- 192.168.3.2 ping statistics - 5 packet(s) transmitted 5 packet