Moxa V2403-C3-W-T [18/90] Static ip address

V2403 Series Linux Software Managing Communications

3-3

Static IP Address

As shown in the following example, the default static IP addresses can be modified.

# The loopback network interface

auto lo

iface lo inet loopback

# The primary network interface

auto eth0

iface eth0 inet static

address 192.168.3.127

netmask 255.255.255.0

broadcast 192.168.3.255

auto eth1

iface eth1 inet static

address 192.168.4.127

netmask 255.255.255.0

broadcast 192.168.4.255

Dynamic IP Address using DHCP

To configure one or both LAN ports to request an IP address dynamically, replace static with dhcp and then

delete the rest of the lines.

# The primary network interface

auto eth0

iface eth0 inet dhcp

After modifying the boot settings of the LAN interface, issue the following command to activate the LAN settings

immediately.

# /etc/init.d/networking restart

moxa@MOXA:~# /etc/init.d/networking restart

Adjusting IP Addresses with “ifconfig”

IP settings can be adjusted during run-time, but the new settings will not be saved to the flash ROM without

modifying the file /etc/network/interfaces. For example, type the command # ifconfig eth0

192.168.1.1 to change the IP address of LAN1 to 192.168.1.1.

moxa@MOXA:~# ifconfig eth0 192.168.1.1

moxa@MOXA:~#