Ether I/O 24 Users Manual V1.3
Elexol Pty Ltd Version 1.3
Page 37
http://www.elexol.com
E L E
X O L
E L E C T R O N I C
S O L U T I O N S
All of these settings can be programmed using the Ether I/O 24 Test Programming Utility available for
download from the Elexol website.
Glossary
BOOTP
Boot Protocol if the protocol used by DHCP for the module to get a Dynamic IP
address.
IP
Internet Protocol is the protocol used for all Internet messages and it allows a
Packet to travel from its Source to its Destination via a Router or even hundreds
of Routers distributed around the world.
UDP
User Datagram Protocol is a standard protocol allowing for the Connectionless
exchange of data between 2 points on a IP network.
ICMP
Internet Control Message Packet is a protocol used to send messages to control
the network and also used to send a Ping request and reply.
Ping
The common name given to a program that sends an ICMP Echo message to
another network device and times how long the reply takes to return.
DHCP
Dynamic Host Control Protocol, A standard way to assign an IP address to a
device, most small routers have an DHCP Server that will assign the next
available address to any device on the network that requests one. This saves the
user from having to keep track of the Address of each network device and
manually assign it an address.
Port Number
Each device on an IP network has an IP Address, this would allow for only 1
link to be formed with another device without the use of a sub addressing
scheme, this scheme is referred to as the port number. The numbers from 1 to
1024 are reserved for special functions and protocols such as DHCP or ICMP.
The Ether I/O 24 uses port 2424 as it is easy to remember.
IP Address
An address like a post box number assigned to every network device in order for
massages, called packets, to be sent from one device to another. The IP address
usually takes the form of 4 numbers between 0 and 255 separated by dots. (e.g.
192.168.1.1)
MAC
Media Access Control which is the actual message format sent over an Ethernet
cable. This format is used to contain an IP packet and allow simple hardware
devices called switches to route packets around a local area network based on
the physical address of the hardware and not a logically assigned IP address.
MAC Address
The physical address of a network device that is assigned at manufacture time
and allows the IP address to be assigned dynamically by allowing devices to
differentiate each other at the hardware level.
IEEE
Institute of Electrical and Electronic Engineers, The organization responsible for
defining standards that will allow different devices to talk to each other,
regardless of their specific manufacturer or country of origin.
