Configuration Roadmap
The configuration roadmap is as follows:
1. Configure the DHCP relay function on RouterA. RouterA can forward DHCP packets
between the hosts in Office A and hosts in other network segments.
2. Configure a global address pool 20.20.20.0/24 on RouterB. RouterB can assign IP addresses
in the global address pool to hosts in Office A on a different network segment.
Data Preparation
To complete the configuration, you need the following data:
1. Name of the DHCP server group: dhcpgroup1
2. IP address of the DHCP server: 100.10.10.1
3. VLAN that Office A belongs to: VLAN 100
4. IP address of VLANIF 100: 20.20.20.1
5. Name of the global address pool: pool1
6. Address range of pool1: 20.20.20.0/24
7. IP address of the egress gateway configured for Office A: 20.20.20.1
Procedure
l Configure the DHCP relay function on RouterA.
1. Create a DHCP server group and add a DHCP server to the group.
# Create a DHCP server group.
<Huawei> system-view
[Huawei] sysname RouterA
[RouterA] dhcp server group dhcpgroup1
# Add a DHCP server to the DHCP server group.
[RouterA-dhcp-server-group-dhcpgroup1] dhcp-server 100.10.10.1
[RouterA-dhcp-server-group-dhcpgroup1] quit
2. Enable the DHCP relay function on VLANIF 100.
# Create a VLAN and add Ethernet 2/0/0 to the VLAN.
[RouterA] vlan batch 100
[RouterA] interface ethernet 2/0/0
[RouterA-Ethernet2/0/0] port hybrid pvid vlan 100
[RouterA-Ethernet2/0/0] port hybrid untagged vlan 100
[RouterA-Ethernet2/0/0] quit
# Enable the DHCP function globally and the DHCP relay function on VLANIF 100.
[RouterA] dhcp enable
[RouterA] interface vlanif 100
[RouterA-Vlanif100] dhcp select relay
[RouterA-Vlanif100] quit
3. Bind the DHCP server group to VLANIF 100.
# Configure an IP address for VLANIF 100.
[RouterA] interface vlanif 100
[RouterA-Vlanif100] ip address 20.20.20.1 24
Huawei AR150&200 Series Enterprise Routers
Configuration Guide - IP Service 6 DHCP Configuration
Issue 02 (2012-03-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
165
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