Digi LR54 User Manual page 187

Interfaces
(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.
For the LR54 device, DHCP relay is configured by providing the IP address of a DHCP relay server,
rather than an IP address range. If both the DHCP relay server and an IP address range are specified,
DHCP relay is used, and the specified IP address range is ignored.
Multiple DHCP relay servers can be provided for each LAN. If multiple relay servers are provided, DHCP
requests are forwarded to all servers without waiting for a response. Clients will typically use the IP
address from the first DHCP response received.
Configuring DHCP relay involves the following items:
Required configuration items
Disable the DHCP server, if it is enabled.
n
IP address of the primary DHCP relay server, to define the relay server that will respond to
n
DHCP requests.
LR54 User Guide
Local Area Networks (LANs)
187