DHCP_IP获取（进阶版）（修订1）

实验要求：让PC获取地址，拓扑图如下：

1、对DS1,DS2，AS部署trunk

DS1：
int range f0/1 , f0/2 , f0/3
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,20,1002-1005
switchport mode trunk

DS2:
int range f0/1 , f0/2 , f0/3
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,20,1002-1005
switchport mode trunk

AS:
int range f0/0 , f0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,20,1002-1005
switchport mode trunk

2、对DS1，DS2的直连，进行捆绑技术

DS1：
int range f0/1 , f0/2
channel-group 1 modce on

DS2：
int range f0/1 , f0/2
channel-group 1 modce on

3、在DS1,DS2,AS部署vtp&vlan划分

DS1:
vlan database
Vtp domain pl
Vtp password ccie
Vtp server
Exit

DS2:
vlan database
Vtp domain pl
Vtp password ccie
Vtp server
Exit

AS:
vlan database
Vtp domain pl
Vtp password ccie
Vtp client
Exit

DS1:
Vlan database
Vlan 10
Vlan 20
exit

AS:
int f0/2
switchport mode access
switchport access vlan 10
int f0/3
switchport mode access
switchport access vlan 20

验证：AS：sh vlan-switch brief
查看AS是否学到vlan 10,vlan 20

4、对DS1，DS2，CS1直连配置地址并ping通，对DS1，DS2部署DHCP中继指向CS1

DS1：
int f0/0
no switchport
ip address 172.16.23.3 255.255.255.0

DS2:
int f0/0
no switchport
ip address 172.16.24.4 255.255.255.0

CS1:
int f0/1
no switchport
ip address 172.16.23.2 255.255.255.0

int f0/2
no switchport
ip address 172.16.24.2 255.255.255.0

5、在CS1部署DHCP池

CS1：
ip dhcp pool VLAN10
  network 192.168.10.0 255.255.255.0
  default-router 192.168.10.253 
  dns-server 8.8.8.8 114.114.114.114 

ip dhcp pool VLAN20
  network 192.168.20.0 255.255.255.0
  default-router 192.168.20.252 
  dns-server 8.8.8.8 114.114.114.114

6、对DS1或DS2设置网关

DS1/DS2：

interface Vlan10
ip address 192.168.10.253 255.255.255.0
ip helper-address 172.16.23.2

interface Vlan20
ip address 192.168.20.252 255.255.255.0
ip helper-address 172.16.23.2

7、部署OPSF

CS1：
router ospf 100
router-id 1.1.1.1
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0

DS1：
router ospf 100
router-id 2.2.2.2
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0

DS2：
router ospf 100
router-id 3.3.3.3
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0

8、在PC设置DHCP地址

PC1、PC2：
Int f0/0
No sh
Ip add dhcp

验证：PC是否自动获取IP，是否能ping通CS1的loopback（8.8.8.8/32）

注意：如有错误，感谢大佬指教！！！
上述实验，亲身实践，效果已经实现。