H3C S7500 Series Ethernet Switches Release 3135 DHCP Configuration Examples

DHCP Configuration Examples

H3C S7500 Series Ethernet Switches Release 3135 Chapter 2 Configuration Examples

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[LAB-Vlan-interface17] ip address 172.16.2.6 30

[LAB-Vlan-interface17] dhcp select global

# Lab1 is connected to VLAN-interface15. Therefore, to assign the IP addresses in the

192.168.17.0/24 network segment to the devices in Lab1, you only need to configure

VLAN-interface15 to operate in the interface address pool mode.

[LAB-Vlan-interface17] quit

[LAB] interface vlan-interface 15

[LAB-Vlan-interface15] ip address 192.168.17.1 24

[LAB-Vlan-interface15] dhcp select interface

[LAB-Vlan-interface15] dhcp server expired day 1

[LAB-Vlan-interface15] quit

# To ensure that the lab DHCP server forwards DHCP packets normally, you need

configure a routing protocol. The following configuration uses RIP as an example. For

the configuration of other routing protocols, see the related parts in product manuals.

[LAB] rip

[LAB-rip] network 192.168.17.0

[LAB-rip] network 172.16.0.0

III. Configuring DHCP snooping

Figure 2-5 Network diagram for DHCP snooping configuration

# Enable DHCP snooping and enable Option 82 support for DHCP snooping.

<Snooping> system-view

[Snooping] dhcp-snooping

[Snooping] dhcp-snooping information enable

# Configure Ethernet 2/0/1 that connects to the DHCP server as a DHCP trusted port.

[Snooping] interface Ethernet 2/0/1

[Snooping-Ethernet2/0/1] dhcp-snooping trust