对于DHCP来说,它与交换机以及路由器相结合而进行一些网络调制和服务器的应用是非常常见的。这里我们就来讲解三个DHCP实验。近日,有朋友问我一些DHCP实验的一些问题。随便就再把DHCP的实验重新做了一次,与大家分离一下:
DHCP实验一:无DHCP代理
拓扑如下:
Router0配置如下:
!interface FastEthernet0/1
ip address 192.168.1.1 255.255.255.0
!
ip dhcp excluded-address 192.168.0.1
ip dhcp excluded-address 192.168.1.1
!
ip dhcp pool bapilong
network 192.168.0.0 255.255.255.0
default-router 192.168.0.1
dns-server 10.10.10.10
PC机可获取到IP地址,如图:
以上实验使用思科TP模拟器#p#
DHCP实验二:使用DHCP中继代理
拓扑图如下:
Router1配置如下:
!
ip dhcp excluded-address 10.10.10.1
ip dhcp excluded-address 20.20.20.1
!
ip dhcp pool work1
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
dns-server 100.100.100.100
!
ip dhcp pool work2
network 20.20.20.0 255.255.255.0
default-router 20.20.20.1
dns-server 100.100.100.100
!
interface Ethernet1/0
ip address 23.1.1.2 255.255.255.0
!
ip route 10.10.10.0 255.255.255.0 23.1.1.1
ip route 20.20.20.0 255.255.255.0 23.1.1.1
Router2配置如下:
interface Ethernet1/0
ip address 10.10.10.1 255.255.255.0
ip helper-address 23.1.1.2
!
interface Ethernet1/1
ip address 23.1.1.1 255.255.255.0
!
interface Ethernet1/3
ip address 20.20.20.1 255.255.255.0
ip helper-address 23.1.1.2
DHCP实验结果如下:
PC2:
R1#Interface FastEthernet0/1 assigned DHCP address 10.10.10.2, mask 255.255.255.0
R4#show ip int brInterface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset administratively down down
FastEthernet0/1 10.10.10.2 YES DHCP up upPC3:
R4#Interface FastEthernet0/1 assigned DHCP address 20.20.20.2, mask 255.255.255.0
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset administratively down down
FastEthernet0/1 20.20.20.2 YES DHCP up up
以上使用工大DY,CCNA路由版做为实验,用思科TP做这个实验时总是无法获取IP地址,故使用DY,其中的PC2为R3路由器,PC3为R4路由器,该两台路由器模拟成PC机,具体配置我就不帖出来了。#p#
DHCP实验三:使用三层交换机
网络拓扑如下:
三层交换机配置如下:
- !
- interface FastEthernet0/1
- switchport access vlan 20
- !
- interface FastEthernet0/2
- switchport access vlan 30
- !
- interface Vlan20
- ip address 20.20.20.1 255.255.255.0
- !
- interface Vlan30
- ip address 30.30.30.1 255.255.255.0
- !
- ip dhcp pool work1
- network 20.20.20.0 255.255.255.0
- default-router 20.20.20.1
- dns-server 100.100.100.100
- ip dhcp pool work2
- network 30.30.30.0 255.255.255.0
- default-router 30.30.30.1
- dns-server 100.100.100.100
DHCP实验结果如下:
PC4:
PC5配置如下:
以上使用思科TP做为实验工具。