ZyXEL p-660hwp Guia Do Utilizador

P-660HWP-Dx User’s Guide

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

Bandwidth management allows you to control the amount of bandwidth going out through the 
P-660HWP-Dx’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.

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

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 Protocol enables fast transfer of files, including large files that may 

not be possible by e-mail. FTP uses 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.