实验拓扑图
实验环境
R4作为DHCP服务器，R1，R2上做中继服务，实现不同网段的pc获取地址
1，配置sw交换机
<Huawei>sys ##进入系统视图模式
[Huawei]sysname SW1 ##修改名字
[SW1]vlan bat 10 20 ##创建vlan10 20
Info: This operation may take a few seconds. Please wait for a moment...done.
[SW1]int e0/0/1 ##进接口
[SW1-Ethernet0/0/1]port link-type access ##配置为access口
[SW1-Ethernet0/0/1]port default vlan 10 ##将接口放到vlan10中
[SW1-Ethernet0/0/1]un sh ##开启
[SW1-Ethernet0/0/1]int e0/0/2 ##e0/0/2接口
[SW1-Ethernet0/0/2]port link-type access
[SW1-Ethernet0/0/2]port default vlan 20 ##放到vlan20中
[SW1-Ethernet0/0/2]un sh
[SW1-Ethernet0/0/2]int e0/0/3
[SW1-Ethernet0/0/3]port link-type access
[SW1-Ethernet0/0/3]port default vlan 10
[SW1-Ethernet0/0/3]un sh
[SW1-Ethernet0/0/3]int e0/0/4
[SW1-Ethernet0/0/4]port link-type access
[SW1-Ethernet0/0/4]port default vlan 20
[SW1-Ethernet0/0/4]un sh
[SW1-Ethernet0/0/4]dis vlan ##查看vlan信息
The total number of vlans is : 3
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U: Up; D: Down; TG: Tagged; UT: Untagged;
MP: Vlan-mapping; ST: Vlan-stacking;
#: ProtocolTransparent-vlan; *: Management-vlan;
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VID Type Ports
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1 common UT:Eth0/0/5(D) Eth0/0/6(D) Eth0/0/7(D) Eth0/0/8(D)
Eth0/0/9(D) Eth0/0/10(D) Eth0/0/11(D) Eth0/0/12(D)
Eth0/0/13(D) Eth0/0/14(D) Eth0/0/15(D) Eth0/0/16(D)
Eth0/0/17(D) Eth0/0/18(D) Eth0/0/19(D) Eth0/0/20(D)
Eth0/0/21(D) Eth0/0/22(D) GE0/0/1(U) GE0/0/2(D)
10 common UT:Eth0/0/1(U) Eth0/0/3(U)
20 common UT:Eth0/0/2(U) Eth0/0/4(U)
VID Status Property MAC-LRN Statistics Description
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1 enable default enable disable VLAN 0001
10 enable default enable disable VLAN 0010
20 enable default enable disable VLAN 0020
[SW1-Ethernet0/0/4]int g0/0/1 ##进入接口
[SW1-GigabitEthernet0/0/1] port link-type trunk ##设置为trunk口
[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all ##允许所有vlan通过
[SW1-GigabitEthernet0/0/1]un sh ##开启
2，配置R1路由
[R1]dhcp enable ##开启dhcp
[R1]int g0/0/1.10 ##进入逻辑子接口
[R1-GigabitEthernet0/0/1.10]dot1q termination vid 10 ##封装协议，该接口对应vlan10
[R1-GigabitEthernet0/0/1.10]ip add 192.168.10.1 24 ##配置网关地址
[R1-GigabitEthernet0/0/1.10]arp broadcast enable ##开启广播
[R1-GigabitEthernet0/0/1.10]dhcp select relay ##开启DHCP中继服务
[R1-GigabitEthernet0/0/1.10]dhcp relay server-ip 14.0.0.2 ##指向R1服务器地址
[R1-GigabitEthernet0/0/1.10]int g0/0/1.20 ##进入逻辑子接口
[R1-GigabitEthernet0/0/1.20]dot1q termination vid 20 ##vlan20
[R1-GigabitEthernet0/0/1.20]ip add 192.168.20.1 24
[R1-GigabitEthernet0/0/1.20]arp broadcast enable
[R1-GigabitEthernet0/0/1.20]dhcp select relay
[R1-GigabitEthernet0/0/1.20]dhcp relay server-ip 14.0.0.2
[R1-GigabitEthernet0/0/1.20]q
[R1]int g0/0/2 ##配置接口的ip地址
[R1-GigabitEthernet0/0/2]ip add 14.0.0.1 24
[R1-GigabitEthernet0/0/2]un sh
[R1-GigabitEthernet0/0/2]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 12.0.0.1 24
[R1-GigabitEthernet0/0/0]un sh
[R1-GigabitEthernet0/0/0]dis ip int b ##查看接口ip信息
*down: administratively down
!down: FIB overload down
^down: standby
(l): loopback
(s): spoofing
(d): Dampening Suppressed
The number of interface that is UP in Physical is 6
The number of interface that is DOWN in Physical is 7
The number of interface that is UP in Protocol is 5
The number of interface that is DOWN in Protocol is 8
Interface IP Address/Mask Physical Protocol
Ethernet0/0/0 unassigned down down
Ethernet0/0/1 unassigned down down
GigabitEthernet0/0/0 12.0.0.1/24 up up
GigabitEthernet0/0/1 unassigned up down
GigabitEthernet0/0/1.10 192.168.10.1/24 up up
GigabitEthernet0/0/1.20 192.168.20.1/24 up up
GigabitEthernet0/0/2 14.0.0.1/24 up up
GigabitEthernet0/0/3 unassigned down down
NULL0 unassigned up up(s)
[R1]ip route-static 15.0.0.0 24 12.0.0.2 ##设置静态路由
3，配置R2路由
<Huawei>sys
[Huawei]sysname R2
[R2]int g0/0/0 ##配置接口IP地址
[R2-GigabitEthernet0/0/0]ip add 12.0.0.2 24
[R2-GigabitEthernet0/0/0]un sh
[R2-GigabitEthernet0/0/0]q
[R2]dhcp enable ##开启dhcp
[R2]int g0/0/1 ##进接口
[R2-GigabitEthernet0/0/1]ip add 15.0.0.1 24 ##配置接口ip
[R2-GigabitEthernet0/0/1]dhcp select relay ##开启中继
[R2-GigabitEthernet0/0/1]dhcp relay server-ip 14.0.0.2 ##指向服务器地址
[R2-GigabitEthernet0/0/1]un sh
[R2-GigabitEthernet0/0/1]q
[R2]ip route-static 0.0.0.0 0.0.0.0 12.0.0.1 ##设置默认路由
[R2]dis ip int b ##查看接口ip信息
*down: administratively down
!down: FIB overload down
^down: standby
(l): loopback
(s): spoofing
(d): Dampening Suppressed
The number of interface that is UP in Physical is 3
The number of interface that is DOWN in Physical is 8
The number of interface that is UP in Protocol is 3
The number of interface that is DOWN in Protocol is 8
Interface IP Address/Mask Physical Protocol
Ethernet0/0/0 unassigned down down
Ethernet0/0/1 unassigned down down
GigabitEthernet0/0/0 12.0.0.2/24 up up
GigabitEthernet0/0/1 15.0.0.1/24 up up
GigabitEthernet0/0/2 unassigned down down
GigabitEthernet0/0/3 unassigned down down
NULL0 unassigned up up(s)
4，配置R4路由
[R4]dhcp enable ##开启dhcp
[R4]int g0/0/0 ##进入接口
[R4-GigabitEthernet0/0/0]ip add 14.0.0.2 24 ##配置ip地址
[R4-GigabitEthernet0/0/0]dhcp select global ##设置全局
[R4-GigabitEthernet0/0/0]un sh
[R4-GigabitEthernet0/0/0]q
[R4]ip route-static 0.0.0.0 0.0.0.0 14.0.0.1 ##设置默认路由
[R4]ip pool dhcp15 ##创建15网段的地址池
[R4-ip-pool-dhcp15]network 15.0.0.0 mask 24 ##设置ip地址段和子网掩码
[R4-ip-pool-dhcp15]gateway-list 15.0.0.1 ##设置网关
[R4-ip-pool-dhcp15]dns-list 8.8.8.8 2.2.2.2 ##设置dns地址
[R4-ip-pool-dhcp15]q
[R4]ip pool dhcpvlan10 ##创建vlan10的地址池
[R4-ip-pool-dhcpvlan10]network 192.168.10.0 mask 24
[R4-ip-pool-dhcpvlan10]gateway-list 192.168.10.1
[R4-ip-pool-dhcpvlan10]dns-list 8.8.8.8 2.2.2.2
[R4-ip-pool-dhcpvlan10]excluded-ip-address 192.168.10.100 192.168.10.254 ##排除的地址
[R4-ip-pool-dhcpvlan10]static-bind ip-address 192.168.10.88 mac-address 5489-9820-62fb ##设置固定ip
[R4-ip-pool-dhcpvlan10]q
[R4]ip pool dhcpvlan20 ##创建vlan20地址池
[R4-ip-pool-dhcpvlan20]network 192.168.20.0 mask 24
[R4-ip-pool-dhcpvlan20]gateway-list 192.168.20.1
[R4-ip-pool-dhcpvlan20]dns-list 8.8.8.8 2.2.2.2
[R4-ip-pool-dhcpvlan20]q
5，查看pc机能否获取ip地址
谢谢阅读！