0x0 拓扑图

• 要求
  1. 内网的PC1需要DHCP服务获取地址，DHCP服务器为AR2
  • 地址池为192.168.1.0/24这个网段
    1. 内网设备的本地域名服务器地址为20.20.20.20
    2. DNS服务器server2中的地址映射为www.lcy.com -> 30.30.30.30
    3. HTTP服务器和FTP服务器都由server1提供

0x1 配置指令

• LSW1

  undo stp enable //关闭stp服务防止链路上充斥着过多的STP包
  

• AR1

  dhcp enable
  interface GigabitEthernet0/0/0
   ip address 192.168.1.1 255.255.255.0 
   dhcp select relay
   dhcp relay server-ip 10.10.10.10
  interface GigabitEthernet0/0/1
   ip address 192.168.2.1 255.255.255.252 
  ospf 1 
   area 0.0.0.0 
  network 192.168.1.1 0.0.0.0 
  network 192.168.2.1 0.0.0.0 
  

• AR3

  dhcp enable
  interface GigabitEthernet0/0/0
   ip address 192.168.2.2 255.255.255.252 
  interface GigabitEthernet0/0/1
   ip address 30.30.30.1 255.255.255.0 
  interface GigabitEthernet0/0/2
   ip address 20.20.20.1 255.255.255.0 
  interface GigabitEthernet4/0/0
   ip address 10.10.10.1 255.255.255.0 
   dhcp select relay
   dhcp relay server-ip 10.10.10.10
  ospf 1 
   area 0.0.0.0 
  network 10.10.10.0 0.0.0.255 
  network 20.20.20.0 0.0.0.255 
  network 30.30.30.0 0.0.0.255 
  network 192.168.2.2 0.0.0.0 
  

• AR2

  dhcp enable
  ip pool dhcp1
   gateway-list 192.168.1.1 
   network 192.168.1.0 mask 255.255.255.0 
   dns-list 20.20.20.20
  interface GigabitEthernet0/0/0
   ip address 10.10.10.10 255.255.255.0 
   dhcp select global
  ospf 1 
   area 0.0.0.0 
  network 10.10.10.10 0.0.0.0 
  

• server2 DNS服务器配置

0x2 连通性测试

• PC1获取DHCP地址
• Client1访问Server1的FTP服务
• Client1访问Server1的HTTP服务