0x0 拓扑图

  • 要求
    1. 各个主机可以获取DHCP服务
    2. DHCP服务器有存在两个地址池

0x1 配置指令

  • 交换机
    1. LSW1
interface GigabitEthernet0/0/1
 port link-type access
 port default vlan 10
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 11
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094
  1. LSW2
interface GigabitEthernet0/0/1
 port link-type access
 port default vlan 10
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 11
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094
  1. LSW3
DHCP enable
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094
interface GigabitEthernet0/0/4
 port link-type access
 port default vlan 12
interface Vlanif12
 ip address 192.168.12.1 255.255.255.0  // 开启虚拟接口保持连通性
interface Vlanif10
 ip address 192.168.10.1 255.255.255.0 //记住中继不是配置在接口上，应该配置在需要获取DHCP服务的vlan里
 dhcp select relay
 dhcp relay server-ip 192.168.12.100
interface Vlanif11
 ip address 192.168.11.1 255.255.255.0
 dhcp select relay
 dhcp relay server-ip 192.168.12.100
  1. AR2
dhcp enable
ip pool dhcp1
 gateway-list 192.168.10.1 
 network 192.168.10.0 mask 255.255.255.0 
 dns-list 114.114.114.114 
ip pool dhcp2
 gateway-list 192.168.11.1 
 network 192.168.11.0 mask 255.255.255.0 
 dns-list 8.8.8.8
interface GigabitEthernet0/0/1
 ip address 192.168.12.100 255.255.255.0 
 dhcp select global
ip route-static 0.0.0.0 0.0.0.0 192.168.12.1  //回包路由

0x2 连通性测试

  • PC2获取地址
  • PC5获取地址
  • PC3 -> pc2