三層交換機實現(xiàn)不同網(wǎng)段的主機通信【實驗名稱】辦公廣播網(wǎng)處理，三層交換機實現(xiàn)不同VLAN之間的通信【實驗?zāi)康摹坑萌龑咏粨Q機將多臺計算機連接起來，構(gòu)建一個小型的辦公網(wǎng)，且實現(xiàn)vlan間的通信。技術(shù)原理： 三層交換機具有網(wǎng)絡(luò)層的功能，實現(xiàn)vlan相互訪問的原理是：利用3層交換機的路由功能，通過識別數(shù)據(jù)包的IP地址，查找路由表進行進行選路轉(zhuǎn)發(fā)。三層交換機利用直接路由可以實現(xiàn)不同vlan之間的互相訪問。三層交換機給接口配置IP地址，采用SVI (交換虛擬接口)的方式實現(xiàn)VLAN間互連，SVI是指為交換機中的VLAN創(chuàng)建虛擬接口，并且配置IP地址?！颈尘懊枋觥俊拘枨蠓治觥俊緦嶒炌負洹俊緦嶒炘O(shè)備】三層交換機1臺PC機3臺【實驗步驟】按照網(wǎng)絡(luò)拓撲連接好網(wǎng)絡(luò)設(shè)備，然后進行如下配置SwitchSwitchenableSwitch#config terminalEnter configuration commands, one per line. End with CNTL/Z.Switch(config)#vlan 10Switch(config-vlan)#name xiaoxueSwitch(config-vlan)#exitSwitch(config)#vlan 20Switch(config-vlan)#name chuzhongSwitch(config-vlan)#exitSwitch(config)#vlan 30Switch(config-vlan)#name gaozhongSwitch(config-vlan)#exitSwitch(config)#interface fa0/1Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 10%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan2, changed state to downSwitch(config-if)#exitSwitch(config)#interface fa0/2Switch(config-if)#switchport mode accessSwitch(config-if)#switchport access vlan 20%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan3, changed state to doSwitch(config-if)#exitSwitch(config)#interface fa0/3Switch(config-if)#switchport mode accessSwitch(config-if)#switchport access vlan 30%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan4, changed state to downSwitch(config-if)#exitSwitch(config)#interface vlan 10%LINK-5-CHANGED: Interface Vlan10, changed state to up%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to upSwitch(config-if)#ip address 192.168.10.1 255.255.255.0% 192.168.10.0 overlaps with Vlan2Switch(config-if)#exitSwitch(config)#interface vlan 20%LINK-5-CHANGED: Interface Vlan20, changed state to up%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed state to upSwitch(config-if)#ip address 192.168.20.1 255.255.255.0% 192.168.20.0 overlaps with Vlan3Switch(config-if)#exitSwitch(config)#interface vlan 30%LINK-5-CHANGED: Interface Vlan30, changed state to up%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan30, changed state to upSwitch(config-if)#ip address 192.168.30.1 255.255.255.0% 192.168.30.0 overlaps with Vlan4Switch(config-if)#exitSwitch(config)#exitSwitch#%SYS-5-CO