码迷,mamicode.com
首页 > 其他好文 > 详细

进阶!中型网络架构DHCP详解、实验步骤

时间:2018-05-11 20:09:38      阅读:179      评论:0      收藏:0      [点我收藏+]

标签:中小型网络构建 DHCP

进阶!中型网络架构DHCP详解、实验步骤

DHCP :
dynamic host configuration protocol
动态 主机 配置 协议

-动态的为主机配置IP地址等相关信息;

DHCP 定义:动态主机配置协议;

DHCP 作用:
对大量的终端主机,实现IP地址自动配置以及集中管理;
节省了工作量,降低了人为配置错误;

DHCP工作过程:
-设备角色

  1. DHCP服务器
  2. DHCP客户端

    -工作原理:
    1.DHCP客户端发送 discover 报文;广播方式;
    2.DHCP服务器接收以后,返回一个 offer 报文;广播方式;
    3.DHCP客户端发送 request 报文;广播方式;
    4.DHCP服务器接收以后,返回一个 ack 报文;广播方式;

DHCP的配置思路:
1.配置 DHCP 客户端
2.配置 DHCP 服务器
#开启 DHCP 功能

       [R2] dhcp enable 

     #创建 DHCP 地址池 
      *全局的地址池
       [R2] ip pool ABC
       [R2-ip-pool-ABC] network 192.168.1.0 mask 255.255.255.0
       [R2-ip-pool-ABC] gateway-list 192.168.1.254
       [R2-ip-pool-ABC] dns-list 8.8.8.8

技术分享图片

#确定 DHCP 选择模式
-需要在接收 DHCP 客户端发送来的报文的端口上配置;
-命令:
[R2]interface gi0/0/0
[R2-gi0/0/0] dhcp select global ->从这个接口上
收到的 DHCP 请求,都直接在本地设备的
地址池( ip pool ) 中拿地址用;


DHCP服务器配置:接口地址池
#开启 DHCP 功能
[R2] dhcp enable
#创建 DHCP 地址池 :
接口的地址池
-使用接收 DHCP 报文的那个端口的IP地址
所在的网段,当做 DHCP 客户端所要的IP
地址空间;
-配置命令:
interface gi0/0/0
dhcp server dns-list 8.8.8.8
#确定 DHCP 选择模式
当我们在 DHCP 服务器上配置的地址池是
属于“接口类型”的时候,我们在“接收DHCP
报文”的端口上的 DHCP 选择模式,应该按
照如下命令配置:
interface gi0/0/0
dhcp select interface

========================================================

DHCP中继:
当DHCP客户端 与 DHCP 服务器不在同一个网段的时候,
我们需要配置 DHCP 中继;

并且一般情况下,是在一个 VLAN 的网关接口下配置的;

配置命令:
-启用 DHCP 功能;
dhcp enable

-配置 DHCP 中继 (网关接口下)
  interface vlanif 10
     ip address 192.168.1.254 255.255.255.0
     dhcp select relay 
     dhcp relay server-ip  192.168.12.2

技术分享图片

  1. 创建交换机VLAN,同时将端口加入到相应的VLAN中
    [H1]vlan batch 20 30 40 88
    [H1]port-group group-member Gi 0/0/1 to gi 0/0/4
    [H1-port-group]port link-type access
    [H1-GigabitEthernet0/0/1]port default vlan 88
    [H1-GigabitEthernet0/0/2]port default vlan 20
    [H1-GigabitEthernet0/0/3]port default vlan 30
    [H1-GigabitEthernet0/0/4]port default vlan 40
    Dhcp服务器开启dhcp,创建三个 地址池
    [R1]dhcp enable
    [R1]ip pool 20
    [R1-ip-pool-20]network 192.168.20.0 mask 255.255.255.0
    [R1-ip-pool-20]gateway-list 192.168.20.254
    [R1-ip-pool-20]dns-list 8.8.8.8
    [R1]ip pool 30
    [R1-ip-pool-30]network 192.168.30.0 mask 255.255.255.0
    [R1-ip-pool-30]gateway-list 192.168.30.254
    [R1-ip-pool-30]dns-list 8.8.8.8
    [R1]ip pool 40
    [R1-ip-pool-40]network 19创建交换机VLAN,同时将端口加入到相应的VLAN中
    [H1]vlan batch 20 30 40 88
    [H1]port-group group-member Gi 0/0/1 to gi 0/0/4
    [H1-port-group]port link-type access
    [H1-GigabitEthernet0/0/1]port default vlan 88
    [H1-GigabitEthernet0/0/2]port default vlan 20
    [H1-GigabitEthernet0/0/3]port default vlan 30
    [H1-GigabitEthernet0/0/4]port default vlan 40
    Dhcp服务器开启dhcp,创建三个 地址池
    [R1]dhcp enable
    [R1]ip pool 20
    [R1-ip-pool-20]network 192.168.20.0 mask 255.255.255.0
    [R1-ip-pool-20]gateway-list 192.168.20.254
    [R1-ip-pool-20]dns-list 8.8.8.8
    [R1]ip pool 30
    [R1-ip-pool-30]network 192.168.30.0 mask 255.255.255.0
    [R1-ip-pool-30]gateway-list 192.168.30.254
    [R1-ip-pool-30]dns-list 8.8.8.8
    [R1]ip pool 40
    [R1-ip-pool-40]network 192.168.40.0 mask 255.255.255.0
    [R1-ip-pool-40]gateway-list 192.168.40.254
    [R1-ip-pool-40]dns-list 8.8.8.8
    [R1-GigabitEthernet0/0/0]ip add 192.168.88.1 24
    [R1-GigabitEthernet0/0/0]dhcp select global
    把VLAN加IP,设置DHCP中继模式
    [H1]int vlan 20
    [H1-Vlanif20]ip add 192.168.20.254 24
    [H1-Vlanif20]dhcp select relay
    [H1-Vlanif20]dhcp relay server-ip 192.168.88.1
    [H1-Vlanif30] ip add 192.168.30.254 24
    [H1-Vlanif30]dhcp select relay
    [H1-Vlanif30]dhcp relay server-ip 192.168.88.1
    [H1-Vlanif40]ip address 192.168.40.254 24
    [H1-Vlanif40]dhcp select relay
    [H1-Vlanif40]dhcp relay server-ip 192.168.88.1
    [H1-Vlanif88]ip add 192.168.88.254 242.168.40.0 mask 255.255.255.0
    [R1-ip-pool-40]gateway-list 192.168.40.254
    [R1-ip-pool-40]dns-list 8.8.8.8
    [R1-GigabitEthernet0/0/0]ip add 192.168.88.1 24
    [R1-GigabitEthernet0/0/0]dhcp select global
    把VLAN加IP,设置DHCP中继模式
    [H1]int vlan 20
    [H1-Vlanif20]ip add 192.168.20.254 24
    [H1-Vlanif20]dhcp select relay
    [H1-Vlanif20]dhcp relay server-ip 192.168.88.1
    [H1-Vlanif30] ip add 192.168.30.254 24
    [H1-Vlanif30]dhcp select relay
    [H1-Vlanif30]dhcp relay server-ip 192.168.88.1
    [H1-Vlanif40]ip address 192.168.40.254 24
    [H1-Vlanif40]dhcp select relay
    [H1-Vlanif40]dhcp relay server-ip 192.168.88.1
    [H1-Vlanif88]ip add 192.168.88.254 24
    最后用主机分配获取ip验证实验

进阶!中型网络架构DHCP详解、实验步骤

标签:中小型网络构建 DHCP

原文地址:http://blog.51cto.com/13698450/2115372

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!