三層交換機vlan配置范例

1、這個配置沒有任何問題。只要你能看明白,記住關鍵的命令,相信你已經(jīng)對三層有更深的認識。*網(wǎng)絡基本情況網(wǎng)絡拓撲結構為:中心交換機采用Cisco Catalyst 4006-S3,Supervisor Engine III G引擎位于第1插槽,用于實現(xiàn)三層交換;1塊24口1000Base-T模塊位于第2插槽,用于連接網(wǎng)絡服務器;1塊6端口1000Base-X模塊位于第3插槽,用于連接6臺骨干交換機。一臺交換機采用Cisco Catalyst 3550-24-EMI,并安裝1塊1000Base-X GBIC千兆模塊。一臺交換機采用CiscoCatalyst 3550-24-SMI,也安裝1塊1000B

2、ase-X GBIC千兆模塊。另外四臺交換機采用Cisco Catalyst 2950G-24-SMI,安裝1塊1000Base-T GBIC千兆模塊。所有服務器劃分為一個VLAN,即VLAN 50。四臺Catalyst 2950G-24-SMI交換機也只劃分為一個VLAN,分別為VLAN 60、VLAN 70、VLAN 80和VLAN 90。Catalyst 3550-24-EMI劃分為4個VLAN,分別為VLAN 10、VLAN 20、VLAN 30和VLAN 40。Catalyst 3550-24-SMI劃分2個VLAN,分別為VLAN 60和VLAN 80,與另外兩臺Catalyst

3、2950G-24-SMI交換機分別位于同一VLAN。*實例分析*由于所有Catalyst 2950G交換機都是一個獨立的VLAN,因此,必須先在這些交換機上創(chuàng)建VLAN(VLAN 60VLAN 90,并將所有端口都指定至該VLAN。然后,再在Catalyst 4006交換機相應端口上分別創(chuàng)建VLAN。Catalyst 4006的1000Base-X端口分別與各Catalyst 2950G的1000Base-X端口連接。其中,GigabitEthernet3/2端口連接至1號Catalyst 2950交換機(VLAN 60,GigabitEthernet3/3端口連接至2號Catalyst 29

4、50交換機(VLAN 70,GigabitEthernet3/4端口連接至3號Catalyst 2950交換機(VLAN 80,GigabitEthernet3/5端口連接至4號Catalyst 2950交換機(VLAN 90, GigabitEthernet3/6端口連接至6號樓交換機(VLAN 80。由于在Catalyst 3550-24-EMI上劃分有4個VLAN(VLAN 10VLAN 40,而4個VLAN都需借助于一條1000Base-X鏈路實現(xiàn)與Catalyst 4006的GigabitEthernet3/1端口連接,因此,必須在Catalyst 4006與Catalyst 355

5、0-24- EMI之間創(chuàng)建一個Trunk。同樣,在Catalyst 3550-24-SMI上劃分有2個VLAN(VLAN 60和VLAN 80,而4個VLAN都需借助于一條1000Base-X鏈路實現(xiàn)與Catalyst 4006的GigabitEthernet3/6端口連接,因此,必須在Catalyst 4006與Catalyst 3550-24- EMI之間創(chuàng)建一個Trunk。另外,所有服務器均連接至Catalyst 4006的1000Base-T模塊,并單獨成為一個VLAN(VLAN 90,因此,也必須為這些交換機創(chuàng)建一個VLAN,并將所有端口指定至該VLAN。需要注意的是,考慮到網(wǎng)絡管理

6、的需要,也可以剩余幾個RJ-45端口(如21至24端口不指定至任何VLAN,從而便于連接網(wǎng)絡管理設備。默認狀態(tài)下,所有端口都屬于VLAN1,而且也只有在VLAN1中才能實現(xiàn)對網(wǎng)絡中所有設備的管理。*配置清單*Cisco Catalyst 4006交換機配置清單Current configuration : 5594 bytes!version 12.1no service padservice timestamps debug uptimeservice timestamps log uptimeno service password-encryptionservice compress-co

7、nfig!hostname hsnc!no logging consoleenable secret level 1 5 $1$rkQW$1HKyKdN5f.Ri5zxeoF8Yv/!ip subnet-zero!interface GigabitEthernet1/1no snmp trap link-status!-不為Supervisor Engine III G引擎中的1000Base-X插槽指定VLAN interface GigabitEthernet1/2no snmp trap link-status!interface GigabitEthernet2/1switchport

8、 access vlan 50no snmp trap link-status!-將端口GigabitEthernet2/1指定至VLAN 50!interface GigabitEthernet2/2switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/3switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/4switchport access vlan 50no snmp trap link-

9、status!interface GigabitEthernet2/5switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/6switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/7switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/8switchport access vlan 50!inter

10、face GigabitEthernet2/9 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/10 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/11 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/12 switchport access vlan 50no snmp tra

11、p link-status!interface GigabitEthernet2/13 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/14 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/15 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/16 switchport acces

12、s vlan 50no snmp trap link-status!interface GigabitEthernet2/17 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/18 switchport access vlan 50no snmp trap link-status!interface GigabitEthernet2/19 switchport access vlan 50!interface GigabitEthernet2/20switchport access vla

13、n 50no snmp trap link-status!-不將GigabitEthernet2/2024指定至任何VLAN!interface GigabitEthernet3/1switchport trunk encapsulation dot1q!-啟用802.1Q Trunk封裝協(xié)議,即在該端口創(chuàng)建Trunk switchport trunk allowed vlan 1-80!-允許vlan 1-90在該中繼線通訊!-可以拒絕或允許某個VLAN訪問該Trunk!-確保未被授權的VLAN通過該Trunk,實現(xiàn)VLAN的訪問安全switchport mode trunk!-將該端口設置

14、為Trunkdescription netcenterno snmp trap link-status!interface GigabitEthernet3/2switchport access vlan 60no snmp trap link-status!-將端口GigabitEthernet3/2指定至VLAN 60!interface GigabitEthernet3/3switchport access vlan 70no snmp trap link-status!-將端口GigabitEthernet3/3指定至VLAN 70!interface GigabitEthernet3

15、/4switchport access vlan 80no snmp trap link-status!-將端口GigabitEthernet3/4指定至VLAN 80!interface GigabitEthernet3/5switchport access vlan 90no snmp trap link-status!-將端口GigabitEthernet3/5指定至VLAN 90!interface GigabitEthernet3/6switchport trunk encapsulation dot1q!-啟用802.1Q Trunk封裝協(xié)議,即在該端口創(chuàng)建Trunk switch

16、port trunk allowed vlan 1-80!-允許vlan 1-90在該中繼線通訊!-可以拒絕或允許某個VLAN訪問該Trunk!-從而確保未被授權的VLAN通過該Trunk,實現(xiàn)VLAN訪問安全switchport mode trunk!-將該端口設置為Trunkdescription netcenterno snmp trap link-status!interface Vlan1description netmangerno ip address!-對VLAN1進行描述interface Vlan10description network centerno ip addre

17、ss!-對VLAN2進行描述!interface Vlan20description computer centerno ip address!interface Vlan30description network labno ip address!interface Vlan40description huaxuelouno ip address!interface Vlan50description wulilouno ip address!interface Vlan60description shengwulouno ip address!interface Vlan70descrip

18、tion zhongwenxino ip address!interface Vlan80description tushuguanno ip address!line con 0stopbits 1line vty 0 4password aaalogin!endCisco Catalyst 3550-EMI配置清單Building configuration.Current configuration : 4055 bytes!version 12.1no service padservice timestamps debug uptimeservice timestamps log up

19、timeno service password-encryption!hostname office!enable secret 5 $1$p0fU$J eyPOM0RuL.Fqfe71efHF1 !ip subnet-zero!spanning-tree extend system-id!interface FastEthernet0/1switchport access vlan 10!-將端口FastEthernet0/1指定至VLAN 10no ip address!interface FastEthernet0/2switchport access vlan 10no ip addr

20、ess!interface FastEthernet0/3switchport access vlan 10no ip addressinterface FastEthernet0/4switchport access vlan 10no ip address!interface FastEthernet0/5switchport access vlan 10no ip address!interface FastEthernet0/6switchport access vlan 20no ip address!-將端口FastEthernet0/6指定至VLAN 20 !interface

21、FastEthernet0/7switchport access vlan 20no ip address!interface FastEthernet0/8switchport access vlan 20no ip address!interface FastEthernet0/9switchport access vlan 20no ip address!interface FastEthernet0/10switchport access vlan 20no ip address!interface FastEthernet0/11switchport access vlan 30no

22、 ip address!-將端口FastEthernet0/6指定至VLAN 30 !interface FastEthernet0/12switchport access vlan 30no ip address!interface FastEthernet0/13switchport access vlan 30no ip address!interface FastEthernet0/14switchport access vlan 30no ip address!interface FastEthernet0/15switchport access vlan 30no ip addre

23、ss!interface FastEthernet0/16switchport access vlan 30no ip address!interface FastEthernet0/17switchport access vlan 30no ip address!interface FastEthernet0/18switchport access vlan 30no ip address!interface FastEthernet0/19switchport access vlan 40no ip address!-將端口FastEthernet0/6指定至VLAN 40 !interf

24、ace FastEthernet0/20switchport access vlan 40no ip address!interface FastEthernet0/21switchport access vlan 40no ip address!interface FastEthernet0/22switchport access vlan 30no ip address!interface FastEthernet0/23switchport access vlan 40no ip address!interface FastEthernet0/24switchport access vl

25、an 40no ip address!interface GigabitEthernet0/1switchport trunk encapsulation dot1q!-啟用802.1Q Trunk封裝協(xié)議,即在該端口創(chuàng)建Trunk switchport trunk allowed vlan 1-80!-允許vlan 1-80在該中繼線通訊switchport mode trunk!-將該端口設置為Trunkno ip address!interface GigabitEthernet0/2no ip address!interface Vlan1!-LAN1指定IP地址no ip route

26、-cacheno ip mroute-cache!ip classlessip http server!line con 0line vty 0 4password aaaloginline vty 5 15login!endCisco Catalyst 3550-SMI配置清單Building configuration.Current configuration : 4055 bytes!version 12.1no service padservice timestamps debug uptimeservice timestamps log uptimeno service passw

27、ord-encryption!hostname office! enable secret 5 $1$p0fU$JeyPOM0RuL.Fqfe71efHF1 ! ip subnet-zero ! ! spanning-tree extend system-id ! ! ! interface FastEthernet0/1 switchport access vlan 60 !-將端口 FastEthernet0/1 指定至 VLAN 60 no ip address ! interface FastEthernet0/2 switchport access vlan 60 no ip add

28、ress ! interface FastEthernet0/3 switchport access vlan 60 no ip address ! interface FastEthernet0/4 switchport access vlan 60 no ip address ! interface FastEthernet0/5 switchport access vlan 60 no ip address ! interface FastEthernet0/6 switchport access vlan 20 no ip address !-將端口 FastEthernet0/6 指定至 VLAN 20 ! interface FastEthernet0/7 switchport access vlan 20 no ip