LAIA TP-100 Administrator's Manual page 69

Table of Contents

Terminology

Description

IPv4

Internet Protocol version 4: The fourth edition of the Internet Protocol. The

current version of the Internet Protocol (IP). IPv4 uses 32 bytes as the host

address, and each address belongs to one of the five categories A, B, C, D, and

E. The address is a 32-bit code, usually expressed in 4 dotted decimal numbers.

Each address consists of a network code, (optional) subnet code, and host code.

The network code and (optional) subnet code are used for routing, and the host

code is used to address a specific host within the network or subnet.

ITU-T

International Telecommunication Union-Telecommunication

standardization sector

LAN

Local Area Network: A network consisting of personal computers and

workstations connected within the same building or within a few kilometers of a

circle has the characteristics of high speed and low error rate. Ethernet, FDDI

and Token Ring are the three main implementation technologies of LAN. Today's

LANs are typically built on switched Ethernet or Wi-Fi technology, running at

1000 Mb/s (ie 1Gb/s).

NAT

Network Address Translation: A standard for the Internet Engineering Task

Force. It allows an organization with an IP address far less than its internal

network node to enter the Internet. Network address translation technology

converts a private IP address of a router, firewall, or personal computer on an

internal private network (such as an address in the range of 192.168.0.0) into

one or more Internet public IP addresses. It converts the headers to new

addresses and monitors them through their internal platform. When the packet

is fed back from the Internet, the network address translation uses these

platforms to reverse-convert the IP address of the user host.

NTP

Network Time Protocol

QoS

Quality of Service: One of the common performance indicators of a

communication system or channel. Different systems and services have different

definitions, which may include jitter, delay, packet loss rate, bit error rate, and

signal-to-noise ratio. It is used to measure the transmission quality and service

effectiveness of a transmission system and to assess the ability of service

providers to meet customer needs.

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