Manual XBC-U

Chapter 1 Introduction
System
1.2.3 Ethernet term
This chapter describes about the general terminology of FEnet I/F module. For more detail, refer to professional book on the
Ethernet
(1) IEEE 802.3
IEEE 802.3 specifies standards for CSMA/CD based Ethernet. Exactly it is a LAN based on CSMA/CD (Carrier
Sense Multiple Access with Collision Detection) Ethernet designed by IEEE 802.3 group, which is classified into
detailed projects as specified below;
A) IEEE P802.3 - 10G Base T study Group
B) IEEE P802.3ah - Ethernet in the First Mile Task Force
C) IEEE P802.3ak - 10G Base-CX4 Task Force
※ Ethernet and IEEE 802.3 are standardized at RFC894 and RFC1042 so each should process another frame.
(2) ARP (Address Resolution Protocol)
Protocol to search for MAC address by means of correspondent IP address on the Ethernet LAN
(3) Bridge
A device used to connect two networks so to be operated as one network. Bridge is used not only to connect two
different types of networks but also to divide one big network into two small networks in order to increase the
performance
(4) Client
A user of the network service, or a computer or program (mainly the one requesting services) using other
computer’s resource.
(5) CSMA/CD(Carrier Sense Multiple Access with Collision Detection)
Each client checks if there is any sign prior to transmission of data to the network (Carrier Sense) and then sends
its data when the network is empty. At this time, all the clients have the equal right to send (Multiple Access). If two
or more clients send data, collision may occur. The client who detects the collision tries to send again in a specific
time.
(6) DNS (Domain Name System)
A method used to convert alphabetic Domain Name on the Internet to its identical Internet number (namely, IP
address)
(7) Dot Address
Shows IP address of ‘100.100.100.100’, where each figure is displayed in decimal with 1 byte occupied
respectively for 4 bytes in total.
1-13