Zyxel-communications 802.11g Wireless ADSL2+ 4-port VoIP IAD P-2602HWNL Uživatelský manuál stáhnout pdf (Strana 81)

P-2602HWNLI User’s Guide

Chapter 5 Bandwidth Management Wizard 81

CHAPTER 5

Bandwidth Management Wizard

This chapter shows you how to configure basic bandwidth management using the wizard

screens.

5.1 Introduction

Bandwidth management allows you to control the amount of bandwidth going out through the

ZyXEL Device’s interfaces and prioritize the distribution of the bandwidth according to

service bandwidth requirements. This helps keep one service from using all of the available

bandwidth and shutting out other users.

5.2 Predefined Media Bandwidth Management Services

The following is a description of the services that you can select and to which you can apply

media bandwidth management using the wizard screens.

Table 17 Media Bandwidth Management Setup: Services

SERVICE DESCRIPTION

WWW The World Wide Web (WWW) is an Internet system to distribute graphical, hyper-

linked information, based on Hyper Text Transfer Protocol (HTTP) - a client/server

protocol for the World Wide Web. The Web is not synonymous with the Internet;

rather, it is just one service on the Internet. Other services on the Internet include

Internet Relay Chat and Newsgroups. The Web is accessed through use of a

browser.

FTP File Transfer Program enables fast transfer of files, including large files that may

not be possible by e-mail. FTP uses TCP (Transmission Control Protocol) port

number 21.

E-Mail Electronic mail consists of messages sent through a computer network to specific

groups or individuals. Here are some default ports for e-mail:

POP3 - port 110

IMAP - port 143

SMTP - port 25

HTTP - port 80

Telnet Telnet is the login and terminal emulation protocol common on the Internet and in

UNIX environments. It operates over TCP/IP networks. Its primary function is to

allow users to log into remote host systems. Telnet uses TCP port 23.

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