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14 ECLYPSE APEX
CHAPTER 3
IPv4 Communication Fundamentals
This chapter describes IPv4 Communication operating principles.
DHCP Versus Manual Network Settings
The following methods can be used to set the network settings:
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Manually set network settings allow precise control over the network’s configuration. This option
may require an in-depth understanding of arcane networking details – much of which is covered in
this guide. See
Networking Basics .
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Use the router’s DHCP setting to automatically connect devices to the network by negotiating the
appropriate settings with the device. This option may not be applicable to all networks; for exam-
ple, the network administrator does not want to use DHCP and has supplied information to manu-
ally configure the device’s IP interface.
No matter which option is chosen, it will be necessary to coordinate with Information Technology (IT)
department personnel the use of shared network resources.
Dynamic Host Configuration Protocol (DHCP)
The Dynamic Host Configuration Protocol (DHCP) is a router feature that dynamically allocates config-
uration parameters to connected devices such as IP, DNS, and default gateway addresses. Enabling
DHCP on a router normally eliminates the need to manually configure network settings on connected
devices. The implementation of DHCP on most routers allows a device to be assigned a fixed IP ad-
dress by associating a specific IP address to a device’s MAC address.
Devices that use ECLYPSE’s internal router with the DHCP option (Hotspot/AP mode) cannot be assigned
fixed IP addresses according to the device’s MAC address.
Figure 1: Typical Router Configuration to Assign a Device’s MAC Address to a Fixed IP Address
If your router supports DHCP and you have access to the router’s configuration interface, this is the
most straight-forward way to configure your network. Ensure that all devices that require a fixed IP ad-
dress use a manually assigned IP address.
IPv4 Communication Fundamentals