实验 使用三层交换机配置DHCP Server服务器（基于全局地址池配置）
一、实验拓扑
二、实验要求
三层交换机S1通过DHCP的公有地址池给PC1和PC2分配IP地址，PC1属于vlan30,PC2属于vlan40,具体要求如下：
(1) 更改主机名S1
(2) 创建vlan 30 40
(3) 配置vlanif 30接口的IP地址为192.168.30.254,vlanif 40接口的IP地址为192.168.40.254
(4) 配置access接口
(5) 启用DHCP
(6) 配置全局地址池
地址池1名：dhcp_vlan30
地址网段：192.168.30.0/24
网关：192.168.30.254
DNS服务器地址：114.114.114.114和 8.8.8.8
地址池2名：dhcp_vlan40
地址网段：192.168.40.0/24
网关：192.168.40.254
DNS服务器地址：114.114.114.114和 8.8.8.8
(7) 配置vlanif 30和vlanif40虚接口下启用全局地址池
三、实验步骤
(1) 更改主机名S1
The device is running!
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]undo info-center enable
Info: Information center is disabled.
[Huawei]sysname S1
[S1]
(2) 创建vlan 30 40
[S1]vlan batch 30 40
Info: This operation may take a few seconds. Please wait for a moment...done.
[S1]
(3) 配置vlanif 30接口的IP地址为192.168.30.254,vlanif 40接口的IP地址为192.168.40.254
！！！注意配置接口IP地址与配置端口access时的先后顺序，应先创建并配置vlan以及接口IP地址，再将各个端口加入相应的vlan中，否则vlan端口启动不了！！！
[S1]interface Vlanif 30
[S1-Vlanif30]ip address 192.168.30.254 24
[S1-Vlanif30]display this
#
interface Vlanif30
ip address 192.168.30.254 255.255.255.0
#
return
[S1-Vlanif30]quit
[S1]interface Vlanif 40
[S1-Vlanif40]ip address 192.168.40.254 24
[S1-Vlanif40]display this
#
interface Vlanif40
ip address 192.168.40.254 255.255.255.0
#
return
[S1-Vlanif40]quit
[S1]display ip interface brief
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 2
The number of interface that is DOWN in Physical is 3
The number of interface that is UP in Protocol is 1
The number of interface that is DOWN in Protocol is 4
Interface IP Address/Mask Physical Protocol
MEth0/0/1 unassigned down down
NULL0 unassigned up up(s)
Vlanif1 unassigned up down
Vlanif30 192.168.30.254/24 down down
Vlanif40 192.168.40.254/24 down down
[S1]
(4) 配置access接口
[S1]interface GigabitEthernet 0/0/1
[S1-GigabitEthernet0/0/1]port link-type access
[S1-GigabitEthernet0/0/1]port default vlan 30
[S1-GigabitEthernet0/0/1]display this
#
interface GigabitEthernet0/0/1
port link-type access
port default vlan 30
#
return
[S1-GigabitEthernet0/0/1]quit
[S1]interface GigabitEthernet 0/0/3
[S1-GigabitEthernet0/0/3]port link-type access
[S1-GigabitEthernet0/0/3]port default vlan 40
[S1-GigabitEthernet0/0/3]display this
#
interface GigabitEthernet0/0/3
port link-type access
port default vlan 40
#
return
[S1-GigabitEthernet0/0/3]quit
[S1]display ip interface brief
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 3
The number of interface that is DOWN in Physical is 2
The number of interface that is UP in Protocol is 3
The number of interface that is DOWN in Protocol is 2
Interface IP Address/Mask Physical Protocol
MEth0/0/1 unassigned down down
NULL0 unassigned up up(s)
Vlanif1 unassigned down down
Vlanif30 192.168.30.254/24 up up
Vlanif40 192.168.40.254/24 up up
[S1]
(5) 启用DHCP
[S1]dhcp enable
[S1]
(6) 配置全局地址池
地址池1名：dhcp_vlan30
地址网段：192.168.30.0/24
网关：192.168.30.254
DNS服务器地址：114.114.114.114和 8.8.8.8
地址池2名：dhcp_vlan40
地址网段：192.168.40.0/24
网关：192.168.40.254
DNS服务器地址：114.114.114.114和 8.8.8.8
[S1]ip pool dhcp_vlan30
Info:It's successful to create an IP address pool.
[S1-ip-pool-dhcp_vlan30]network 192.168.30.0 mask 24
[S1-ip-pool-dhcp_vlan30]gateway-list 192.168.30.254
[S1-ip-pool-dhcp_vlan30]dns-list 114.114.114.114 8.8.8.8
[S1-ip-pool-dhcp_vlan30]display this
#
ip pool dhcp_vlan30
gateway-list 192.168.30.254
network 192.168.30.0 mask 255.255.255.0
dns-list 114.114.114.114 8.8.8.8
#
return
[S1-ip-pool-dhcp_vlan30]quit
[S1]ip pool dhcp_vlan40
Info:It's successful to create an IP address pool.
[S1-ip-pool-dhcp_vlan40]network 192.168.40.0 mask 24
[S1-ip-pool-dhcp_vlan40]gateway-list 192.168.40.254
[S1-ip-pool-dhcp_vlan40]dns-list 114.114.114.114 8.8.8.8
[S1-ip-pool-dhcp_vlan40]display this
#
ip pool dhcp_vlan40
gateway-list 192.168.40.254
network 192.168.40.0 mask 255.255.255.0
dns-list 114.114.114.114 8.8.8.8
#
return
[S1-ip-pool-dhcp_vlan40]quit
[S1]display ip pool
-----------------------------------------------------------------------
Pool-name : dhcp_vlan30
Pool-No : 0
Position : Local Status : Unlocked
Gateway-0 : 192.168.30.254
Mask : 255.255.255.0
VPN instance : --
-----------------------------------------------------------------------
Pool-name : dhcp_vlan40
Pool-No : 1
Position : Local Status : Unlocked
Gateway-0 : 192.168.40.254
Mask : 255.255.255.0
VPN instance : --
IP address Statistic
Total :506
Used :0 Idle :506
Expired :0 Conflict :0 Disable :0
[S1]
(7) 配置vlanif 30和vlanif40虚接口下启用全局地址池
[S1]interface Vlanif 30
[S1-Vlanif30]dhcp select global
[S1-Vlanif30]display this
#
interface Vlanif30
ip address 192.168.30.254 255.255.255.0
dhcp select global
#
return
[S1-Vlanif30]quit
[S1]interface Vlanif 40
[S1-Vlanif40]dhcp select global
[S1-Vlanif40]display this
#
interface Vlanif40
ip address 192.168.40.254 255.255.255.0
dhcp select global
#
return
[S1-Vlanif40]quit
[S1]display ip pool name dhcp_vlan30
Pool-name : dhcp_vlan30
Pool-No : 0
Lease : 1 Days 0 Hours 0 Minutes
Domain-name : -
DNS-server0 : 114.114.114.114
DNS-server1 : 8.8.8.8
NBNS-server0 : -
Netbios-type : -
Position : Local Status : Unlocked
Gateway-0 : 192.168.30.254
Mask : 255.255.255.0
VPN instance : --
-----------------------------------------------------------------------------
Start End Total Used Idle(Expired) Conflict Disable
-----------------------------------------------------------------------------
192.168.30.1 192.168.30.254 253 1 252(0) 0 0
-----------------------------------------------------------------------------
[S1]
[S1]display ip pool name dhcp_vlan40
Pool-name : dhcp_vlan40
Pool-No : 1
Lease : 1 Days 0 Hours 0 Minutes
Domain-name : -
DNS-server0 : 114.114.114.114
DNS-server1 : 8.8.8.8
NBNS-server0 : -
Netbios-type : -
Position : Local Status : Unlocked
Gateway-0 : 192.168.40.254
Mask : 255.255.255.0
VPN instance : --
-----------------------------------------------------------------------------
Start End Total Used Idle(Expired) Conflict Disable
-----------------------------------------------------------------------------
192.168.40.1 192.168.40.254 253 1 252(0) 0 0
-----------------------------------------------------------------------------
[S1]
(8)保存S1交换机上的配置文件
[S1]q
<S1>save
The current configuration will be written to the device.
Are you sure to continue?[Y/N]y
Now saving the current configuration to the slot 0.
Save the configuration successfully.
<S1>
四、实验测试
执行ipconfig命令
执行ipconfig /release ——释放获取到的IP地址参数
执行ipconfig /renew——获取新的IP地址参数
PC1
PC>ipconfig /release
IP Configuration
Link local IPv6 address...........: fe80::5689:98ff:fe79:248a
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 0.0.0.0
Subnet mask.......................: 0.0.0.0
Gateway...........................: 0.0.0.0
Physical address..................: 54-89-98-79-24-8A
DNS server........................:
PC>ipconfig /renew
IP Configuration
Link local IPv6 address...........: fe80::5689:98ff:fe79:248a
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.30.253
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.30.254
Physical address..................: 54-89-98-79-24-8A
DNS server........................: 114.114.114.114
8.8.8.8
PC>
PC2
PC>ipconfig /release
IP Configuration
Link local IPv6 address...........: fe80::5689:98ff:fe99:4726
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 0.0.0.0
Subnet mask.......................: 0.0.0.0
Gateway...........................: 0.0.0.0
Physical address..................: 54-89-98-99-47-26
DNS server........................:
PC>ipconfig /renew
IP Configuration
Link local IPv6 address...........: fe80::5689:98ff:fe99:4726
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.40.253
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.40.254
Physical address..................: 54-89-98-99-47-26
DNS server........................: 114.114.114.114
8.8.8.8
PC>