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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 WAN port 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 18 Media Bandwidth Management Setup: Services
SERVICE
WWW
FTP
E-Mail
Telnet
Chapter 5 Bandwidth Management Wizard
DESCRIPTION
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.
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.
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 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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