Digi TX40 User Manual page 209

Interfaces
6. Set the value for the DHCP option:
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)> value_str value
(network interface my_lan ipv4 dhcp_server advanced custom_option 0)>
7. (Optional) Set a label for this custom option:
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)> name label
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)>
8. (Optional) To force the DHCP option to always be sent to the client, even if the client does not
ask for it:
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)> force true
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)>
9. (Optional) Set the data type that the option uses.
If the incorrect data type is selected, the device will send the value as a string.
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)> datatype value
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)>
where value is one of:
1byte
n
2byte
n
4byte
n
hex
n
ipv4
n
str
n
The default is str.
10. Save the configuration and apply the change
(config network interface my_lan ipv4 dhcp_server advanced custom_option
0)> save
Configuration saved.
>
11. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
Configure DHCP relay
DHCP relay allows a router to forward DHCP requests from one LAN to a separate DHCP server,
typically connected to a different LAN.
TX40 User Guide
Local Area Networks (LANs)
209