吃什么水果对肾炎好:思科设备）学习DHCP原理，实现为不同的Vlan划分不同地址池

==============================================================

==============================================================

初始配置：
Router>enable
Router#config terminal
Enter configuration commands, one per line.  
Router(config)#no ip domain lookup 
Router(config)#line console 0
Router(config-line)#exec-time 0 0
Router(config-line)#logging sync
Router(config-line)#exit
Router(config)#hostname R1        
R1(config)#hostname 3L-SW1
 
VLAN的创建 
3L-SW1(vlan)#vlan 2 name V2
   VLAN 2 added:
    Name: V2
3L-SW1(vlan)#vlan 3 name V3
  VLAN 3 added:
    Name: V3
3L-SW1(vlan)#vlan 4 name V4
   VLAN 4 added:
Name: V4
 
为Vlan设置网关
3L-SW1(config)#interface vlan 2
3L-SW1(config-if)#ip add 192.168.2.1 255.255.255.0
3L-SW1(config-if)#no sh
3L-SW1(config-if)#inter vlan 3
3L-SW1(config-if)#ip add 192.168.3.1 255.255.255.0
3L-SW1(config-if)#no sh
3L-SW1(config-if)#inter vlan 4
3L-SW1(config-if)#ip add 192.168.4.1 255.255.255.0
 
接口划入相应的VLAN
3L-SW1#show vlan-s br
VLAN Name                             Status    Ports
—- ——————– ——————————-
1    default           active     Fa0/0, Fa0/5, Fa0/6, Fa0/7
                                 Fa0/8, Fa0/9, Fa0/10, Fa0/11
                                Fa0/12, Fa0/13, Fa0/14, Fa0/15
2    V2               active    Fa0/1
3    V3               active    Fa0/2
4    V4               active    Fa0/3, Fa0/4
 
设置速端口，实现快速转发
3L-SW1(config)#inter rang fa0/1 - 15
3L-SW1(config-if-range)#switchport mode access 
3L-SW1(config-if-range)#spanning-tree portfast 
 
DHCP配置具体步骤：
 
3L-SW1(config)#ip dhcp pool Vlan2
3L-SW1(dhcp-config)#network 192.168.2.0 255.255.255.0
3L-SW1(dhcp-config)#dns-server 192.168.2.10
3L-SW1(dhcp-config)#default-router 192.168.2.1
3L-SW1(dhcp-config)#domain-name beyondx.cn
 
3L-SW1(config)#ip dhcp pool Vlan3
3L-SW1(dhcp-config)#network 192.168.3.0 255.255.255.0
33L-SW1(dhcp-config)#dns-server 192.168.3.10
3L-SW1(dhcp-config)#default-router 192.168.3.1
3L-SW1(dhcp-config)#lease 3       //租约时间为3天
3L-SW1(dhcp-config)#exit
 
3L-SW1(config)#ip dhcp pool vlan4 
3L-SW1(dhcp-config)#network 192.168.4.0 255.255.255.0
3L-SW1(dhcp-config)#dns-server 192.168.4.10
3L-SW1(dhcp-config)#default-router 192.168.4.1
3L-SW1(dhcp-config)#import all
3L-SW1(dhcp-config)#exit
 
保留服务器地址
3L-SW1(config)#ip dhcp excluded-address 192.168.2.1 192.168.2.10
3L-SW1(config)#ip dhcp excluded-address 192.168.3.1 192.168.3.10
3L-SW1(config)#ip dhcp excluded-address 192.168.4.1 192.168.4.10
 
开启三层路由功能
3L-SW1(config)#ip routing