DHCP中继（实验操作）

DHCP中继（实验操作）

实验拓扑：

实验配置：

#DHCP服务器基础配置
sys
sys AR1
int g0/0/0
ip add 192.168.12.1 24
ip route-static 192.168.10.0 24 192.168.12.2
ip route-static 192.168.20.0 24 192.168.12.2

#DHCP中继基础配置
sys
sys SW1
vlan batch 10 20
int g0/0/1
p l a
p d v 10
int g0/0/2
p l a
p d v 20

int vlanif 10
ip add 192.168.10.254 24
int vlanif 20
ip add 192.168.20.254 24
int vlanif 1
ip add 192.168.12.2 24

#DHCP服务器配置全局地址池
#开启全局DHCP
[AR1]dhcp enable 
Info: The operation may take a few seconds. Please wait for a moment.done.
[AR1]

#配置vlan10 地址池
[AR1]ip pool vlan10
Info: It's successful to create an IP address pool.	
[AR1-ip-pool-vlan10]network 192.168.10.0 mask 24	
[AR1-ip-pool-vlan10]gateway-list 192.168.10.254	
[AR1-ip-pool-vlan10]dns-list 114.114.114.114
[AR1-ip-pool-vlan10]dis thi
[V200R003C00]
#
ip pool vlan10
 gateway-list 192.168.10.254 
 network 192.168.10.0 mask 255.255.255.0 
 dns-list 114.114.114.114 
#
return
[AR1-ip-pool-vlan10]

#配置vlan20 地址池
[AR1]ip pool vlan20
Info: It's successful to create an IP address pool.
[AR1-ip-pool-vlan20]
[AR1-ip-pool-vlan20] gateway-list 192.168.20.254 
[AR1-ip-pool-vlan20]
[AR1-ip-pool-vlan20] network 192.168.20.0 mask 255.255.255.0 
[AR1-ip-pool-vlan20]
[AR1-ip-pool-vlan20] dns-list 114.114.114.114 
[AR1-ip-pool-vlan20]
[AR1-ip-pool-vlan20]dis thi
[V200R003C00]
#
ip pool vlan20
 gateway-list 192.168.20.254 
 network 192.168.20.0 mask 255.255.255.0 
 dns-list 114.114.114.114 
#
return
[AR1-ip-pool-vlan20]

#进入接口，开启全局DHCP服务功能
[AR1]interface GigabitEthernet 0/0/0
[AR1-GigabitEthernet0/0/0]dhcp select global 

#查询DHCP地址池
[AR1]display ip pool 
  -----------------------------------------------------------------------
  Pool-name      : vlan10
  Pool-No        : 0
  Position       : Local           Status           : Unlocked
  Gateway-0      : 192.168.10.254  
  Mask           : 255.255.255.0
  VPN instance   : --

  -----------------------------------------------------------------------
  Pool-name      : vlan20
  Pool-No        : 1
  Position       : Local           Status           : Unlocked
  Gateway-0      : 192.168.20.254  
  Mask           : 255.255.255.0
  VPN instance   : --


  IP address Statistic
    Total       :506   
    Used        :0          Idle        :506   
    Expired     :0          Conflict    :0          Disable   :0     
[AR1]

#DHCP中继
[SW1]dhcp enable 
Info: The operation may take a few seconds. Please wait for a moment.done.
[SW1]
[SW1]dhcp server group office
Info:It's successful to create a DHCP server group.
[SW1-dhcp-server-group-office]dhcp-server 192.168.12.1

[SW1]interface Vlanif 10
[SW1-Vlanif10]dhcp select relay 
[SW1-Vlanif10]dhcp relay server-select office
[SW1-Vlanif10]dis thi
#
interface Vlanif10
 ip address 192.168.10.254 255.255.255.0
 dhcp select relay
 dhcp relay server-select office
#
return
[SW1-Vlanif10]

[SW1]interface Vlanif20
[SW1-Vlanif20] ip address 192.168.20.254 255.255.255.0
Error: The address already exists.
[SW1-Vlanif20] dhcp select relay
[SW1-Vlanif20] dhcp relay server-select office
[SW1-Vlanif20]dis thi
#
interface Vlanif20
 ip address 192.168.20.254 255.255.255.0
 dhcp select relay
 dhcp relay server-select office
#
return
[SW1-Vlanif20]

#主机自动获取DHCP IP地址
#vlan 10 PC1
PC>ipconfig /renew

IP Configuration


Link local IPv6 address...........: fe80::5689:98ff:fe35:5abc
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.10.253
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.10.254
Physical address..................: 54-89-98-35-5A-BC
DNS server........................: 114.114.114.114

#vlan20 PC2
PC>ipconfig

Link local IPv6 address...........: fe80::5689:98ff:fe98:45b7
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.20.253
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.20.254
Physical address..................: 54-89-98-98-45-B7
DNS server........................: 114.114.114.114


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