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Interfaces
About Local Area Networks (LANs)
A Local Area Network (LAN) connects network devices together, such as Ethernet or Wi-Fi, in a logical
Layer-2 network.
The following diagram shows a LAN connected to the ETH2 Ethernet device and the Digi AP (Wi-Fi1)
access point. Once the LAN is configured and enabled, the devices connected to the network
interfaces can communicate with each other, as demonstrated by the ping commands.
Configure a Local Area Network (LAN)
Configuring a Local Area Network (LAN) involves configuring the following items:
Required configuration items
n
A name for the interface.
Note
If the interface name is more than eight characters, the name will be truncated in the
underlying network interface to the first six characters followed by three digits, incrementing
from 000. This affects any custom scripts or firewall rules that may be trying to adjust the
interface or routing table entries.
The interface type: either Ethernet, IP Passthrough, or PPPoE.
n
The firewall zone: Internal.
n
The network device or bridge that is used by the LAN.
n
The IPv4 address and subnet mask for the LAN. While it is not strictly necessary for a LAN to
n
have an IP address, if you want to send traffic from other networks to the LAN, you must
configure an IP address.
Note
By default, LAN is set to an IP address of 192.168.2.1 and uses the IP subnet of
192.168.2.0/24. If the WAN/ETH1 Ethernet device is being used by a WAN with the same IP
subnet, you should change the default IP address and subnet of LAN1.
Additional configuration items
Additional IPv4 configuration:
n
The type being the way to control how the modem in the Digi device obtains an IP address
l
from the cellular network.
The metric for IPv4 routes associated with the LAN.
l
The relative weight for IPv4 routes associated with the LAN.
l
The IPv4 management priority of the LAN. The active interface with the highest
l
management priority will have its address reported as the preferred contact address for
central management and direct device access.
TX40 User Guide
Local Area Networks (LANs)
167
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