比较全面的三层交换机配置实例(带命令解释哟!)
Enable //进入私有模式 Configure terminal //进入全局模式 service password-encryption //对密码进行加密 hostname Catalyst 3550-12T1 //给三层交换机定义名称 enable password 123456. //enable密码 Enable secret 654321 //enable的加密密码(应该是乱码而不是654321这样) Ip subnet-zero //允许使用全0子网(默认都是打开的) Ip name-server 172.16.8.1 172.16.8.2 //三层交换机名字Catalyst 3550-12T1对应的IP地址是172.16.8.1 Service dhcp //提供DHCP服务 ip routing //启用三层交换机上的路由模块 Exit Vtp mode server //定义VTP工作模式为sever模式 Vtp domain centervtp //定义VTP域的名称为centervtp Vlan 2 name vlan2 //定义vlan并给vlan取名(如果不取名的话,vlan2的名字应该是vlan002) Vlan 3 name vlan3 Vlan 4 name vlan4 Vlan 5 name vlan5 Vlan 6 name vlan6 Vlan 7 name vlan7 Vlan 8 name vlan8 Vlan 9 name vlan9 Exit interface Port-channel 1 //进入虚拟的以太通道组1 switchport trunk encapsulation dot1q //给这个接口的trunk封装为802.1Q的帧格式 switchport mode trunk //定义这个接口的工作模式为trunk switchport trunk allowed vlan all //在这个trunk上允许所有的vlan通过 Interface gigabitethernet 0/1 //进入模块0上的吉比特以太口1 switchport trunk encapsulation dotlq //给这个接口的trunk封装为802.1Q的帧格式 switchport mode trunk //定义这个接口的工作模式为trunk switchport trunk allowed vlan all //在这个trunk上允许所有的vlan通过 channel-group 1 mode on //把这个接口放到快速以太通道组1中 Interface gigabitethernet 0/2 //同上 switchport trunk encapsulation dotlq switchport mode trunk switchport trunk allowed vlan all channel-group 1 mode on port-channel load-balance src-dst-ip //定义快速以太通道组的负载均衡方式(依*源和目的IP的方式) interface gigabitethernet 0/3 //进入模块0上的吉比特以太口3 switchport trunk encapsulation dotlq //给trunk封装为802.1Q switchport mode trunk //定义这个接口的工作模式为trunk switchport trunk allowed vlan all //允许所有vlan信息通过 interface gigabitethernet 0/4 //同上 switchport trunk encapsulation dotlq switchport mode trunk switchport trunk allowed vlan all interface gigbitethernet 0/5 //同上 switchport trunk encapsulation dotlq switchport mode trunk switchport trunk allowed vlan all interface gigbitethernet 0/6 //同上 switchport trunk encapsulation dotlq switchport mode trunk switchprot trunk allowed vlan all interface gigbitethernet 0/7 //进入模块0上的吉比特以太口7 Switchport mode access //定义这个接口的工作模式为访问模式 switchport access vlan 9 //定义这个接口可以访问哪个vlan(实际就是分配这个接口到vlan) no shutdown spanning-tree vlan 6-9 cost 1000 //在生成树中,vlan6-9的开销定义为10000 [next]
interface range gigabitethernet 0/8 – 10 //进入模块0上的吉比特以太口8,9,10
switchport mode access //定义这些接口的工作模式为访问模式 switchport access vlan 8 //把这些接口都分配到vlan8中 no shutdown spanning-tree portfast //在这些接口上使用portfast(使用portfast以后,在生成树的时候不参加运算,直接成为转发状态)
interface gigabitethernet 0/11 //进入模块0上的吉比特以太口11
switchport trunk encapsulation dotlq //给这个接口封装为802.1Q switchport mode trunk //定义这个接口的工作模式为trunk switchport trunk allowed vlan all //允许所有vlan信息通过
interface gigabitethernet 0/12 //同上
switchport trunk encapsulation dotlq switchport mode trunk switchport trunk allowed vlan all
interface vlan 1 //进入vlan1的逻辑接口(不是物理接口,用来给vlan做路由用)
ip address 172.16.1.7 255.255.255.0 //配置IP地址和子网掩码 no shutdown standby 1 ip 172.16.1.9 //开启了冗余热备份(HSRP),冗余热备份组1,虚拟路由器的IP地址为172.16.1.9 standby 1 priority 110 preempt //定义这个三层交换机在冗余热备份组1中的优先级为110,preempt是用来开启抢占模式
interface vlan 2 //同上
ip address 172.16.2.252 255.255.255.0 no shutdown standby 2 ip 172.16.2.254 standby 2 priority 110 preempt ip access-group 101 in //在入方向上使用扩展的访问控制列表101
interface vlan 3 //同上
ip address 172.16.3.252 255.255.255.0 no shutdown standby 3 ip 172.16.3.254 standby 3 priority 110 preempt ip access-group 101 in
interface vlan 4 //同上
ip address 172.16.4.252 255.255.255.0 no shutdown standby 4 ip 172.16.4.254 standby 4 priority 110 preempt ip access-group 101 in
interface vlan 5
ip address 172.16.5.252 255.255.255.0 no shutdown standby 5 ip 172.16.5.254 standby 5 priority 110 preempt ip access-group 101 in
interface vlan 6
ip address 172.16.6.252 255.255.255.0 no shutdown standby 6 ip 172.16.6.254 standby 6 priority 100 preempt
interface vlan 7
ip address 172.16.7.252 255.255.255.0 no shutdown standby 7 ip 172.16.7.254 standby 7 priority 100 preempt
interface vlan 8
ip address 172.16.8.252 255.255.255.0 no shutdown standby 8 ip 172.16.8.254 standby 8 priority 100 preempt
interface vlan 9
ip address 172.16.9.252 255.255.255.0 no shutdown standby 9 ip 172.16.9.254 standby 9 priority 100 preempt
access-list 101 deny ip any 172.16.7.0 0.0.0.255 //扩展的访问控制列表101
access-list 101 permit ip any any
Interface vlan 1 //进入vlan1这个逻辑接口
Ip helper-address 172.16.8.1 //可以转发广播(helper-address的作用就是把广播转化为单播,然后发向172.16.8.1) Interface vlan 2 Ip helper-address 172.16.8.1 Interface vlan 3 ip helper-address 172.16.8.1 interface vlan 4 ip helper-address 172.16.8.1 interface vlan 5 ip helper-address 172.16.8.1 interface vlan 6 ip helper-address 172.16.8.1 interface vlan 7 ip helper-address 172.16.8.1 interface vlan 9 ip helper-address 172.16.8.1
router rip //启用路由协议RIP
version 2 //使用的是RIPv2,如果没有这句,则是使用RIPv1 network 172.16.0.0 //宣告直连的网段
exit
ip route 0.0.0.0 0.0.0.0 172.16.9.250 //缺省路由,所有在路由表中没有办法匹配的数据包,都发向下一跳地址为172.16.9.250这个路由器
line con 0 line aux 0 line vty 0 15 //telnet线路(路由器只有5个,是0-4) password 12345678 //login密码 login end copy running-config startup-config 保存配置 |