思科三层交换机配置命令

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
Interface gigabitethernet 0/1          //进入模块0上的吉比特以太口1
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(依靠源和目的IP的方式)
interface gigabitethernet 0/3               //进入模块0上的吉比特以太口3

interface gigabitethernet 0/4         //同上
interface gigbitethernet 0/5          //同上
interface gigbitethernet 0/6          //同上
interface gigbitethernet 0/7           //进入模块0上的吉比特以太口7
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 �C 10         //进入模块0上的吉比特以太口8,9,10
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
interface gigabitethernet 0/12        //同上

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

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