CCNA实验:全面的三层交换机配置实例

CISCO认证考试网 鲤鱼小编 更新时间:2019-02-20

比较全面的三层交换机配置实例(带命令解释哟!)

Enable //进入?#25509;心?#24335;

Configure terminal //进入全局模式

service password-encryption //对密码进行?#29992;?/span>

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?#29992;?#23494;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

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 //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?#27597;?/span>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

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

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

 

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110preempt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?#36739;?#19978;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(helperaddress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 //?#31508;?#36335;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

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