Example For Configuring Dhcp Snooping; Figure 6-10 Dhcp Snooping Networking - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

Raisecom
ISCOM2600G-HI (A) Series Configuration Guide

6.3.8 Example for configuring DHCP Snooping

Networking requirements
As shown in Figure 6-10, the Switch is used as the DHCP Snooping device. The network
requires DHCP clients to obtain the IP address from a legal DHCP server and support Option
82 to facilitate client management. You can configure padding information of about circuit ID
sub-option to raisecom on GE 1/1/3, and padding information about remote ID sub-option to
user01.

Figure 6-10 DHCP Snooping networking

Configuration steps
Step 1 Configure global DHCP Snooping.
Raisecom#config
Raisecom(config)#ip dhcp snooping
Step 2 Configure the trusted interface.
Raisecom(config)#interface gigaethernet 1/1/1
Raisecom(config-gigaethernet1/1/1)#ip dhcp snooping
Raisecom(config-gigaethernet1/1/1)#ip dhcp snooping trust
Raisecom(config-gigaethernet1/1/1)#quit
Step 3 Configure DHCP Relay to support Option 82 field and configure Option 82 field.
Raisecom(config)#ip dhcp snooping information option
Raisecom(config)#ip dhcp information option remote-id string user01
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
6 DHCP
269