3Com 5500G-EI Command Reference Guide - Page 118

118 CHAPTER 5: USING NETWORK PROTOCOL COMMANDS undo ip address dhcp-alloc View VLAN Interface View Parameter None Description Use the ip address dhcp-alloc command to configure VLAN interface to obtain IP address using DHCP. Use the undo ip address dhcp-alloc command to remove the configuration. By default, the VLAN interface does not obtain an IP address using DHCP. Example To configure VLAN interface to obtain IP address using DHCP, enter the following: system-view System View: return to User View with Ctrl+Z. [SW5500]interface vlan-interface 1 [SW5500-Vlan-interface1]ip address dhcp-alloc DHCP Relay Configuration Commands This section describes the commands you can use to configure and manage the Dynamic Host Configuration Protocol (DHCP) operations on your Switch 5500G-EI. address-check Syntax address-check enable address-check disable View VLAN Interface View Parameter None Description Use the address-check enable command to enable DHCP relay security to check address validity. Use the address-check disable command to disable DHCP relay security. Example To enable DHCP security on VLAN interface 1 enter the following: