三层交换机的DHCP实验

实验目的：

   学习DHCP原理，实现为不同的Vlan划分不同地址池.

实验思路：

   使用三层交换技术，使得不同VLAN之间的主机能够通信。

   为不同Vlan划分不同的地址池

 

 

拓扑图：

实验连线：

Switch1 F0/1 <—-> VPC P0/1 VPC1

Switch1 F0/2 <—-> VPC P0/2 VPC2

Switch1 F0/3 <—-> VPCS V0/1 VPC3

Switch1 F0/4 <—-> VPCS V0/2 VPC4

 

 

3L-SW1：

 

初始配置：

Router>enable

Router#config terminal

Enter configuration commands, one per line. 

Router(config)#no ip domain lookup

Router(config)#line console 0

Router(config-line)#exec-time 0 0

Router(config-line)#logging sync

Router(config-line)#exit

Router(config)#hostname R1       

R1(config)#hostname 3L-SW1

 

VLAN的创建 

3L-SW1(vlan)#vlan 2 name V2

   VLAN 2 added:

    Name: V2

3L-SW1(vlan)#vlan 3 name V3

  VLAN 3 added:

    Name: V3

3L-SW1(vlan)#vlan 4 name V4

   VLAN 4 added:

Name: V4

 

为Vlan设置网关

3L-SW1(config)#interface vlan 2

3L-SW1(config-if)#ip add 192.168.2.1 255.255.255.0

3L-SW1(config-if)#no sh

3L-SW1(config-if)#inter vlan 3

3L-SW1(config-if)#ip add 192.168.3.1 255.255.255.0

3L-SW1(config-if)#no sh

3L-SW1(config-if)#inter vlan 4

3L-SW1(config-if)#ip add 192.168.4.1 255.255.255.0

 

接口划入相应的VLAN

3L-SW1#show vlan-s br

VLAN Name                             Status    Ports

—- ——————– ——————————-

1    default           active     Fa0/0, Fa0/5, Fa0/6, Fa0/7

                                 Fa0/8, Fa0/9, Fa0/10, Fa0/11

                                Fa0/12, Fa0/13, Fa0/14, Fa0/15

2    V2               active    Fa0/1

3    V3               active    Fa0/2

4    V4               active    Fa0/3, Fa0/4

 

设置速端口，实现快速转发

3L-SW1(config)#inter rang fa0/1 - 15

3L-SW1(config-if-range)#switchport mode access

3L-SW1(config-if-range)#spanning-tree portfast

 

DHCP配置具体步骤：

 

3L-SW1(config)#ip dhcp pool Vlan2

3L-SW1(dhcp-config)#network 192.168.2.0 255.255.255.0

3L-SW1(dhcp-config)#dns-server 192.168.2.10

3L-SW1(dhcp-config)#default-router 192.168.2.1

3L-SW1(dhcp-config)#domain-name beyondx.cn

 

3L-SW1(config)#ip dhcp pool Vlan3

3L-SW1(dhcp-config)#network 192.168.3.0 255.255.255.0

33L-SW1(dhcp-config)#dns-server 192.168.3.10

3L-SW1(dhcp-config)#default-router 192.168.3.1

3L-SW1(dhcp-config)#lease 3       //租约时间为3天

3L-SW1(dhcp-config)#exit

 

3L-SW1(config)#ip dhcp pool vlan4

3L-SW1(dhcp-config)#network 192.168.4.0 255.255.255.0

3L-SW1(dhcp-config)#dns-server 192.168.4.10

3L-SW1(dhcp-config)#default-router 192.168.4.1

3L-SW1(dhcp-config)#import all

3L-SW1(dhcp-config)#exit

 

保留服务器地址

3L-SW1(config)#ip dhcp excluded-address 192.168.2.1 192.168.2.10

3L-SW1(config)#ip dhcp excluded-address 192.168.3.1 192.168.3.10

3L-SW1(config)#ip dhcp excluded-address 192.168.4.1 192.168.4.10

本文出自 “展望未来” 博客，请务必保留此出处http://wjane.blog.51cto.com/916805/199700