Alcatel-Lucent AOS-W 6.5.3.x - Enabling Linux DHCP Servers

1107| DHCP with Vendor-Specific Options AOS-W 6.5.3.x| User Guide
3. After the ip dhcp option-82 <xml-file-name-in-flash> command is executed successfully, in the WLAN
interface configuration execute option-82 command to apply option-82 configuration to the DHCP
packets that need to be relayed from that interface.
For example:
(host) (config) #interface vlan 25
(host) (config-subif)#option-82
4. Execute the following command if the user wants to remove option-82 configuration:
(host) (config) #no ip dhcp option-82
This command is not successful if there is a WLAN VLAN interface configured with option-82 command. To remove
option-82 configuration, go to the respective VLAN interface and execute no option-82 command and then execute
the no ip dhcp option-82 command.
Configuring Option-82
You can configure option-82 using the WebUI or the CLI.
In the WebUI
1. Navigate to Configuration > Network > IP > IP Interfaces tab.
2. Click Edit next to the VLAN ID for which you want to configure Option-82.
3. Select the Option-82 check-box to enable option-82.
4. Click Apply.
In the CLI
Execute the following command to configure DHCPOption-82:
(host) (config) #ip dhcp option-82 finalxml.xml
Execute the following command to enableDHCPOption-82 on VLAN with helper address:
(host) (config) #interface vlan 25
(host) (config-subif) #option-82
Execute the following command to enableOption-82 on L2 VLAN:
(host) (config) #vlan 25 option-82
Execute the following command to check if Option-82 is enabled:
(host) #show vlan
VLAN CONFIGURATION
------------------
VLAN Description Ports AAA Profile Option-82
---- ----------- ----- ----------- ---------
1 Default GE0/0/0-0/1 GE0/0/2-0/5 Pc0-7 N/A Disabled
25 VLAN0025 N/A Enabled
Execute the following command to remove Option-82 configuration:
(host) (config) #no ip dhcp option-82
Execute the following command to remove DHCP option-82 configuration on L3 VLAN:
(host) (config) #interface vlan
(host) (config) #no vlan option-82
Enabling Linux DHCP Servers
The following is an example configuration for the Linux dhcpd.conf file. After you enter the configuration, you
must restart the DHCP service.