Digisol DG-BR4000N Router Manual PDF (Setup & Configuration Guide)

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DG-BR4000NG User Manual

141

4-3 Glossary

Default Gateway (Router):

gateway IP address. Wh

v

efault gateway, which

the destin

DHCP:

Dynamic Host Con

s

every computer on your hom

Domain Name System, which allows

Internet servers to hav

er.com) and

one or more IP addr

Internet servers and th

domain name is reques

browser), the user is sen

by the computers on

has assigned to you.

tands f

your

ransm

Ethernet:

A standard for co

second (Mbps).

Idle Timeout

:

Idle Timeo

for a pre-configured

disconnected.

(S

n IP

dress consists of a series of four numbers separated by periods, which identifies a

ngle, unique Internet computer host in an IP network. Example: 192.168.2.1. It

nsists of 2 portions: the IP network address, and the host identifier.

Every non-router IP device needs to configure a default

en the device sends out an IP packet, if the destination is not

on the same network, the de

will then send it to

ice has to send the packet to its d

ation.

figuration Protocol. This protocol automatically give

e network an IP address.

DNS Server IP Address:

DNS stands for

e a domain name (such as www.Broadbandrout

esses (such as 192.34.45.8). A DNS server keeps a database of

eir respective domain names and IP addresses, so that when a

ted (as in typing "Broadbandrouter.com" into your Internet

t to the proper IP address. The DNS server IP address used

your home network is the location of the DNS server your ISP

DSL Modem:

DSL s

existing phone lines to t

or Digital Subscriber Line. A DSL modem uses

it data at high speeds.

mputer networks. Ethernet networks are connected by

special cables and hubs, and move data around at up to 10/100 million bits per

ut is designed so that after there is no traffic on the Internet

amount of time, the connection will automatically get

IP Address and Network

ubnet) Mask:

IP stands for Internet Protocol. A

ad

si

co

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142

32-bit binary pattern, which can be represented as four cascaded

ecimal numbers separated by “.”: aaa.aaa.aaa.aaa, where each “aaa” can be

0’s, such as

11111111.11111111.11111111.00000000. Therefore sometimes a network mask can

ary forms, all bits in the IP

address that correspond to 1’s in the network mask become part of the IP network

0000000.00000111. This is a convenient and efficient method

ISP Gateway Address is an IP

iduals and other businesses or organizations.

AN.

que for each

anufacturer), plus 3 bytes that are often used as the product’s serial number.

The IP address is a

d

anything from 000 to 255, or as four cascaded binary numbers separated by “.”:

bbbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb, where each “b” can be either 0 or 1.

A network mask is also a 32-bit binary pattern, and consists of consecutive leading

1’s followed by consecutive trailing

also be described simply as “x” number of leading 1’s.

When both are represented side by side in their bin

address, and the remaining bits correspond to the host ID.

For example, if the IP address for a device is, in its binary form,

11011001.10110000.10010000.00000111, and if its network mask is,

11111111.11111111.11110000.00000000

It means the device’s network address is

11011001.10110000.10010000.00000000, and its host ID is,

00000000.00000000.0

for routers to route IP packets to their destination.

ISP Gateway Address:

(see ISP for definition). The

address for the Internet router located at the ISP's office.

ISP:

Internet Service Provider. An ISP is a business that provides connectivity to the

Internet for indiv

LAN:

Local Area Network. A LAN is a group of computers and devices connected

together in a relatively small area (such as home or office). Your home network is

considered a L

MAC Address:

MAC stands for Media Access Control. A MAC address is the

hardware address of a device connected to a network. MAC address is a unique

identifier for a device with an Ethernet interface. It is comprised of two parts: 3

bytes of data that correspond to the Manufacturer ID (uni

m

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DG-BR4000NG User Manual

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mbers to distinguish one network

NAT:

Network Address Translation. This process allows all the computers on your

home network to use one IP address. Using the broadband router’s NAT capability,

you can access Internet from any computer on your home network without having to

purchase more IP addresses from your ISP.

Port:

Network Clients (LAN PC) uses port nu

application/protocol over another. Below is a list of common applications and

protocol/port numbers:

Application

Protocol

Port

Number

Telnet

TCP

23

FTP

TCP

21

SMTP

TCP

25

POP3

TCP

110

H.323

TCP

1720

SNMP

UDP

161

SNMP Trap

UDP

162

HTTP

TCP

80

PPTP

TCP

1723

PC Anywhere

TCP

5631

PC Anywhere

UDP

5632

ctions; PPPoE is for

Ethernet connections. PPPoE relies on two widely accepted standards, Ethernet and

Protocol:

A protocol is a set of rules for interaction agreed upon between multiple

PPPoE

: (Point-to-Point Protocol over Ethernet.) Point-to-Point Protocol is a secure

data transmission method originally created for dial-up conne

the Point-to-Point Protocol. It is a communications protocol for transmitting

information over Ethernet between different manufacturers.

parties so that when they interface with each other based on such a protocol, the

interpretation of their behavior is well defined and can be made objectively, without

confusion or misunderstanding.

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144

be a part of the TCP/IP information

provided by your ISP, is a set of four numbers (e.g. 255.255.255.0) configured like

rNIC).

P:

Control Protocol/Internet Protocol (TCP/IP) and

Unreliable Datagram P

UDP). TCP/IP is the standard protocol for data

ission over the I

net. Both TCP and UDP are transport layer protocols.

s proper error detection and error recovery, and thus is reliable. UDP on

er hand

t re

. They both run on top of the IP (Internet Protocol), a

k layer p

ol.

e

A network that connects computers located in

phically

ate

s (e.g. different buildings, cities, countries). The Internet

de area n

k.

a

ent

hical User Interface (GUI):

Many devices support a

raphical user interface that is based on the web browser. This means the user can

se the familiar Netscape or Microsoft Internet Explorer to Control/configure or

Router:

A router is an intelligent network device that forwards packets between

different networks based on network layer address information such as IP addresses.

Subnet Mask:

A subnet mask, which may

an IP address. It is used to create IP address numbers used only within a particular

network (as opposed to valid IP address numbers recognized by the Internet, which

must be assigned by Inte

TCP/IP, UD

Transmission

rotocol (

transm

nter

TCP perform

the oth

is no

liable

networ

rotoc

WAN:

Wid

Area Network.

geogra

separ

area

is a wi

etwor

Web-based m nagem

Grap

g

u

monitor the device being managed.

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