DHCP中繼

DHCP中繼（也叫做DHCP中繼代理）是一個(gè)小程序，其可以實(shí)現(xiàn)在不同子網(wǎng)和物理網(wǎng)段之間處理和轉(zhuǎn)發(fā)dhcp信息的功能。如果DHCP客戶機(jī)與DHCP服務(wù)器在同一個(gè)物理網(wǎng)段，則客戶機(jī)可以正確地獲得動態(tài)分配的ip地址。如果不在同一個(gè)物理網(wǎng)段，則需要DHCP Relay Agent(中繼代理)。

1、拓?fù)鋱D

?2、AR1 路由器設(shè)置

<Huawei>sys
[Huawei]sys R1
[R1]undo info en

# 開啟路由器 DHCP 功能
[R1]dhcp enable

# 進(jìn)入接口
[R1]int g0/0/0

# 設(shè)置IP
[R1-GigabitEthernet0/0/0]ip addr 10.0.0.1 24

# 接口開啟DHCP
[R1-GigabitEthernet0/0/0]dhcp select global

# 配置 vlan10 地址池
[R1-GigabitEthernet0/0/0]ip pool vlan10
[R1-ip-pool-vlan10]network 192.168.10.0 mask 24
[R1-ip-pool-vlan10]gateway-list 192.168.10.1
[R1-ip-pool-vlan10]dns-list 114.114.114.114
[R1-ip-pool-vlan10]excluded-ip-address 192.168.10.200 192.168.10.254

# 配置 vlan20 地址池
[R1-ip-pool-vlan10]ip pool vlan20
[R1-ip-pool-vlan20]network 192.168.20.0 mask 24
[R1-ip-pool-vlan20]gateway-list 192.168.20.1
[R1-ip-pool-vlan20]dns-list 114.114.114.114
[R1-ip-pool-vlan20]excluded-ip-address 192.168.20.200 192.168.20.254

3、AR1?路由器設(shè)置靜態(tài)路由

[R1]ip route-static 192.168.10.0 24 10.0.0.2
[R1]ip route-static 192.168.20.0 24 10.0.0.2

4、SW1?交換機(jī)設(shè)置

<Huawei>sys
[Huawei]sys SW1

# 批量創(chuàng)建 vlan
[SW1]vlan batch 10 20 100

# 接口加入 vlan
[SW1]int g0/0/1
[SW1-GigabitEthernet0/0/1]p l a
[SW1-GigabitEthernet0/0/1]p d v 10
[SW1-GigabitEthernet0/0/1]int g0/0/2
[SW1-GigabitEthernet0/0/2]p l a
[SW1-GigabitEthernet0/0/2]p d v 20
[SW1-GigabitEthernet0/0/2]int g0/0/3
[SW1-GigabitEthernet0/0/3]p l a
[SW1-GigabitEthernet0/0/3]p d v 100

# 配置 vlanif100 接口
[SW1]int vlanif 100
[SW1-Vlanif100]ip addr 10.0.0.2 24

5、交換機(jī)配置?DHCP?中繼

# 開啟交換機(jī) DHCP 功能
[SW1]dhcp enable

# 配置 vlanif10 接口
[SW1]int vlanif 10
[SW1-Vlanif10]ip addr 192.168.10.1 24

# 設(shè)置為中繼模式
[SW1-Vlanif10]dhcp select relay

# 指向 10.0.0.1 DHCP服務(wù)器地址，以請求DHCP服務(wù)
[SW1-Vlanif10]dhcp relay server-ip 10.0.0.1

# 配置 vlanif20 接口
[SW1]int vlanif 20
[SW1-Vlanif20]ip addr 192.168.20.1 24
[SW1-Vlanif20]dhcp select relay
[SW1-Vlanif20]dhcp relay server-ip 10.0.0.1

6、測試文章來源地址http://www.zghlxwxcb.cn/news/detail-521926.html

PC1>ipconfig

Link local IPv6 address...........: fe80::5689:98ff:fe2a:e09
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.10.199
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.10.1
Physical address..................: 54-89-98-2A-0E-09
DNS server........................: 114.114.114.114

PC2>ipconfig

Link local IPv6 address...........: fe80::5689:98ff:fee3:6765
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.20.199
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.20.1
Physical address..................: 54-89-98-E3-67-65
DNS server........................: 114.114.114.114

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