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Configuring IP addresses
Digi ConnectPort LTS User Guide
21
Configuring IP addresses
The IP address mode determines how IP addresses are assigned. There are two modes for assigning
IP addresses:
n
Dynamic:
Allows IP addresses to be automatically assigned using the Dynamic Host
Configuration Protocol (DHCP) and/or Auto Private IP Addressing (APIP or AUTO IP).
n
Static:
Requires you to assign a static IP address using any available configuration interface.
By default, ConnectPort LTS devices are configured to dynamically assign addresses using DHCP.
Even if a DHCP server is available for dynamically assigning IP addresses, static addresses may work
better for your network configuration. Once set, static IP addresses do not change and other network
devices can always find the device by its IP address. With dynamic settings, the DHCP server can
change the IP address frequently or infrequently depending on how your network administrator has
configured the network.
When the IP address changes, network devices configured to talk to the ConnectPort LTS device can
no longer access the device. In this case, you must locate the Digi device using the Digi Device
Discovery utility and reconfigure the other network devices that need to communicate with the
ConnectPort LTS device.
The following table summarizes methods for assigning an IP address.
Method
Description
Digi Device
Discovery
Utility
Use the Digi Device Discovery utility to search for and display Digi device, as well as
change configuration settings. See
Use Digi Device Discovery utility to sign in to the
LCD panel
Use the LCD panel on ConnectPort LTS products to perform basic configuration
tasks, including setting the IP address, as well as monitoring and diagnostics tasks.
See
Dynamic
Host
Configuration
Protocol
(DHCP)
Use DHCP from the web interface to automatically assign IP addresses, to deliver IP
stack configuration parameters such as the subnet mask and default router, and to
provide other configuration information. All ConnectPort LTS devices have a DHCP
client enabled by default. Contact your network administrator to find out if a DHCP
server is available. See
Assign an IP address using DHCP
.
Auto Private
IP Addressing
(APIPA)
also known
as Auto-IP
Use APIPA to automatically assign an IP address to the Digi device from a reserved
pool of standard Auto-IP addresses on a DHCP server. If the DHCP server is
unavailable or there is no DHCP server, Auto-IP assigns the device an IP address. If
DHCP is enabled or responds after ADDP is used, both override the Auto-IP address
previously assigned. See
Assign an IP address using Auto-IP
Static IP
Manually assign a specific IP address to a device through the Digi Device Discovery
Utility, the web interface, LCD, or the command-line interface. Once set, these
settings do not change. The IP address and subnet mask are mandatory. Additional
settings may be needed for some functions. Contact your network administrator for
the required values.
