DHCP實驗一、
要求:R5模擬三層交換機,R2、R3、R4模擬PC
三層交換機建立3個dhcp地址池分別分配給3個vlan
地址池名稱 範圍 對應vlan
vlan10 192.168.10.0/24 vlan 10
vlan20 192.168.20.0/24 vlan 20
vlan30 192.168.30.0/24 vlan 30
R5: 模擬DHCP
R5(config)#int f0/3
R5(config-if)#no switchport 默認爲二層接口
R5(config-if)#ip add 192.168.11.254 255.255.255.0
R5(config-if)#no shutdown
R5(config-if)#end
R5(vlan)#vlan 10
R5(vlan)#vlan 20
R5(vlan)#vlan 30
R5(vlan)#exit
R5(config)#ip dhcp pool vlan10
R5(dhcp-config)#network 192.168.10.0 255.255.255.0
R5(dhcp-config)#default-router 192.168.10.254
R5(dhcp-config)#dns-server 8.8.8.8 114.114.114.114
R5(dhcp-config)#exit
R5(config)#ip dh po vlan20
R5(dhcp-config)#netw 192.168.20.0 255.255.255.0
R5(dhcp-config)#default-router 192.168.20.254
R5(dhcp-config)#exit
R5(config)#ip dh po vlan30
R5(dhcp-config)#netw 192.168.30.0 255.255.255.0
R5(dhcp-config)#default-router 192.168.30.254
R5(config-if)#ip add 192.168.10.254 255.255.255.0
R5(config-if)#exit
R5(config)#int vlan 20
R5(config-if)#ip add 192.168.20.254 255.255.255.0
R5(config-if)#exit
R5(config)#int vlan 30
R5(config-if)#ip add 192.168.30.254 255.255.255.0
R5(config-if)#exit
R5(config-if)#switchport access vlan 10
R5(config-if)#exit
R5(config)#int f0/1
R5(config-if)#sw ac vlan 20
R5(config-if)#exit
R5(config)#int f0/2
R5(config-if)#sw ac vlan 30
R5(config-if)#exit
R5(config)#ip dhcp excluded-address 192.168.30.1 192.168.30.10
R4: 模擬PC 其他兩臺一樣配置方法
R4#conf te
R4(config)#no ip routing
R4(config)#int f0/0
R4(config-if)#ip add dhcp
R4(config-if)#no shutdown
*Mar 1 00:06:24.091: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Mar 1 00:06:25.091: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
*Mar 1 00:07:12.823: %DHCP-6-ADDRESS_ASSIGN: Interface FastEthernet0/0 assigned DHCP address 192.168.30.11, mask 255.255.255.0, hostname R4
R4(config-if)#end
R4#ping 192.168.30.254
Sending 5, 100-byte ICMP Echos to 192.168.30.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/253/1032 ms
實驗二、 跨路由DHCP
要求:pc可以進過route獲取到DHCP分配的地址
基礎配置就不重複了,包括:
1、pc配置成自動獲取IP
2、路由器兩個端口設置IP
3、DHCP地址和地址池分配
Route(config)#int f0/0
Route(config-if)#ip helper-address 192.168.2.2
還需要在dhcp設備上配置一條靜態路由,否則dhcp設備找不到迴應的路徑
DHCP(config)#ip route 192.168.1.0 255.255.255.0 192.168.2.1
綁定IP和mac地址:
DHCP(config)#ip dhcp pool static
DHCP(dhcp-config)#host 192.168.1.100
DHCP(dhcp-config)#client-identifier 01cc01.099c.0000 此處01爲固定添加字符
DHCP(dhcp-config)#default-router 192.168.1.254
DHCP(dhcp-config)#dns-server 8.8.8.8
PC:
PC(config-if)#ip add dhcp client-id f0/0 表示以f0/0接口獲取IP
*Mar 1 00:35:21.375: %DHCP-6-ADDRESS_ASSIGN: Interface FastEthernet0/0 assigned DHCP address 192.168.1.100, mask 255.255.255.0, hostname PC