DHCP中继
实验拓扑图为
二层交换机sw1的配置为：
<Huawei
>system-view
[Huawei
]sysname sw1
[sw1
]v b 10 20
[sw1
]int e0/0/1
[sw1-Ethernet0/0/1
]p l a
[sw1-Ethernet0/0/1
]p d
v 10
[sw1-Ethernet0/0/1
]un sh
[sw1-Ethernet0/0/1
]int e0/0/2
[sw1-Ethernet0/0/2
]p l a
[sw1-Ethernet0/0/2
]p d
v 20
[sw1-Ethernet0/0/2
]un sh
[sw1-Ethernet0/0/2
]int e0/0/3
[sw1-Ethernet0/0/3
]p l a
[sw1-Ethernet0/0/3
]p d
v 10
[sw1-Ethernet0/0/3
]un sh
[sw1-Ethernet0/0/3
]int e0/0/4
[sw1-Ethernet0/0/4
]p l a
[sw1-Ethernet0/0/4
]p d
v 20
[sw1-Ethernet0/0/4
]un sh
[sw1-Ethernet0/0/4
]int g0/0/1
[sw1-GigabitEthernet0/0/1
]p l t
[sw1-GigabitEthernet0/0/1
]p t a
v a
[sw1-GigabitEthernet0/0/1
]un sh
路由器R1的配置
<Huawei
>system-view
[Huawei
]sysname R1
[R1
]dhcp
enable
[R1
]int g0/0/0
[R1-GigabitEthernet0/0/0
]ip add 14.0.0.2 24
[R1-GigabitEthernet0/0/0
]dhcp
select global
[R1-GigabitEthernet0/0/0
]un sh
[R1-GigabitEthernet0/0/0
]q
[R1
]ip route-static 0.0.0.0 0.0.0.0 14.0.0.1
[R1
]ip pool dhcp15
[R1-ip-pool-dhcp15
]network 15.0.0.1 mask 24
[R1-ip-pool-dhcp15
]gateway-list 15.0.0.1
[R1-ip-pool-dhcp15
]dns-list 8.8.8.8 2.2.2.2
[R1-ip-pool-dhcp15
]q
[R1
]ip pool dhcpvlan10
[R1-ip-pool-dhcpvlan10
]network 192.168.10.0 mask 24
[R1-ip-pool-dhcpvlan10
]gateway-list 192.168.10.1
[R1-ip-pool-dhcpvlan10
]dns-list 8.8.8.8 2.2.2.2
[R1-ip-pool-dhcpvlan10
]q
[R1
]ip pool dhcpvlan20
[R1-ip-pool-dhcpvlan20
]network 192.168.20.0 mask 24
[R1-ip-pool-dhcpvlan20
]gateway-list 192.168.20.1
[R1-ip-pool-dhcpvlan20
]dns-list 8.8.8.8 2.2.2.2
[R1-ip-pool-dhcpvlan20
]q
路由器R2的配置
<Huawei
>system-view
[Huawei
]sysname R2
[R2
]dhcp
enable
[R2
]int g0/0/1.10
[R2-GigabitEthernet0/0/1.10
]d t
v 10
[R2-GigabitEthernet0/0/1.10
]ip add 192.168.10.1 24
[R2-GigabitEthernet0/0/1.10
]a b en
[R2-GigabitEthernet0/0/1.10
]dhcp
select relay
[R2-GigabitEthernet0/0/1.10
]dhcp relay server-ip 14.0.0.2
[R2-GigabitEthernet0/0/1.10
]q
[R2
]int g0/0/1.20
[R2-GigabitEthernet0/0/1.20
]d t
v 20
[R2-GigabitEthernet0/0/1.20
]ip add 192.168.20.1 24
[R2-GigabitEthernet0/0/1.20
]a b en
[R2-GigabitEthernet0/0/1.20
]dhcp
select relay
[R2-GigabitEthernet0/0/1.20
]dhcp relay server-ip 14.0.0.2
[R2-GigabitEthernet0/0/1.20
]q
[R2
]int g0/0/2
[R2-GigabitEthernet0/0/2
]ip add 14.0.0.1 24
[R2-GigabitEthernet0/0/2
]un sh
[R2-GigabitEthernet0/0/2
]int g0/0/0
[R2-GigabitEthernet0/0/0
]ip add 12.0.0.1 24
[R2-GigabitEthernet0/0/0
]un sh
[R2-GigabitEthernet0/0/0
]q
[R2
]ip route-static 15.0.0.0 24 12.0.0.2
R3路由器的配置
<Huawei
>system-view
[Huawei
]sysname R3
[R3
]int g0/0/0
[R3-GigabitEthernet0/0/0
]ip add 12.0.0.2 24
[R3-GigabitEthernet0/0/0
]un sh
[R3-GigabitEthernet0/0/0
]q
[R3
]dhcp
enable
[R3
]int g0/0/1
[R3-GigabitEthernet0/0/1
]ip add 15.0.0.1 24
[R3-GigabitEthernet0/0/1
]dhcp
select relay
[R3-GigabitEthernet0/0/1
]dhcp relay server-ip 14.0.0.2
[R3-GigabitEthernet0/0/1
]q
[R3
]ip route-static 0.0.0.0 0.0.0.0 12.0.0.1
在R3上进行全网互通测试
[R3]ping 12.0.0.1
PING 12.0.0.1: 56 data bytes, press CTRL_C to break
Reply from 12.0.0.1: bytes=56 Sequence=1 ttl=255 time=80 ms
Reply from 12.0.0.1: bytes=56 Sequence=2 ttl=255 time=50 ms
Reply from 12.0.0.1: bytes=56 Sequence=3 ttl=255 time=50 ms
Reply from 12.0.0.1: bytes=56 Sequence=4 ttl=255 time=40 ms
Reply from 12.0.0.1: bytes=56 Sequence=5 ttl=255 time=30 ms
--- 12.0.0.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/50/80 ms
[R3]ping 14.0.0.1
PING 14.0.0.1: 56 data bytes, press CTRL_C to break
Reply from 14.0.0.1: bytes=56 Sequence=1 ttl=255 time=40 ms
Reply from 14.0.0.1: bytes=56 Sequence=2 ttl=255 time=1 ms
Reply from 14.0.0.1: bytes=56 Sequence=3 ttl=255 time=20 ms
Reply from 14.0.0.1: bytes=56 Sequence=4 ttl=255 time=40 ms
Reply from 14.0.0.1: bytes=56 Sequence=5 ttl=255 time=50 ms
--- 14.0.0.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 1/30/50 ms
[R3]ping 14.0.0.2
PING 14.0.0.2: 56 data bytes, press CTRL_C to break
Reply from 14.0.0.2: bytes=56 Sequence=1 ttl=254 time=90 ms
Reply from 14.0.0.2: bytes=56 Sequence=2 ttl=254 time=40 ms
Reply from 14.0.0.2: bytes=56 Sequence=3 ttl=254 time=60 ms
Reply from 14.0.0.2: bytes=56 Sequence=4 ttl=254 time=60 ms
Reply from 14.0.0.2: bytes=56 Sequence=5 ttl=254 time=60 ms
--- 14.0.0.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 40/62/90 ms
