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CCNP(BCMSN)实验:在三层交换机上配置DHCP

运维开发网 https://www.qedev.com 2020-11-13 10:17 出处:51CTO 作者:starshomes
在三层交换机上配置DHCP

CCNP(BCMSN)实验:在三层交换机上配置DHCP

实验过程:

第一步:基本配置

sw1(config)#int f2/1

sw1(config-if)#no sh

sw1(config-if)#spanning-tree portfast

第二步:在sw1上开启DHCP服务。

sw1(config)#service dhcp

//在全局下默认是关闭的

sw1(config)#no ip dhcp conflict logging

//关闭DHCP分配冲突,日志记录消息

sw1(config)#ip dhcp pool libo

//创建DHCP地址池,名称可是为任意字符

sw1(dhcp-config)#network 192.168.0.0 /24

//指定要通过dhcp分配的网段和掩码

sw1(dhcp-config)#default-router 192.168.0.1

//网关地址

sw1(dhcp-config)#domain-name www.cisco.com.cn

//dns域名

sw1(dhcp-config)#dns-server 218.30.19.40 61.134.1.4

//dns域名解析地址

sw1(dhcp-config)#lease infinite

//租期

sw1(dhcp-config)#exi

sw1(config)#ip dhcp excluded-address 192.168.0.1

sw1(config)#ip dhcp excluded-address 192.168.0.10

//排除地址

sw1(config)#int vlan 1

sw1(config-if)#ip add 192.168.0.1 255.255.255.0

sw1(config-if)#no sh

第四步:查看当前交换机配置文件

sw1#sh run | b ip dh

no ip dhcp conflict logging

ip dhcp excluded-address 192.168.0.1

ip dhcp excluded-address 192.168.0.10

!

ip dhcp pool libo

network 192.168.0.0 255.255.255.0

default-router 192.168.0.1

domain-name www.cisco.com.cn

dns-server 218.30.19.40 61.134.1.4

lease infinite

第五步:查看

当配置了接口的ip 为dhcp获取时

出现

R1#Interface Ethernet0/1 assigned DHCP address 192.168.0.2, mask 255.255.255.0

R1#sh ip in b

Interface IP-Address OK? Method Status Protocol

Ethernet0/0 unassigned YES unset administratively down down

Ethernet0/1 192.168.0.2 YES DHCP up up

Ethernet0/2 unassigned YES unset administratively down down

sw1#sh ip dhcp pool libo

Pool libo :

Utilization mark (high/low) : 100 / 0

Subnet size (first/next) : 0 / 0

Total addresses : 254

Leased addresses : 1

Pending event : none

1 subnet is currently in the pool :

Current index IP address range Leased addresses

192.168.0.3 192.168.0.1 - 192.168.0.254 1

sw1#sh ip dhcp binding

Bindings from all pools not associated with VRF:

IP address Client-ID/ Lease expiration Type

Hardware address/

User name

192.168.0.2 0063.6973.636f.2d63. Infinite Automatic

6366.332e.3065.6630.

2e30.3030.312d.4574.

302f.31

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