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Chapter 15 Bandwidth Management
NBG334S User’s Guide
145
15.6 Predefined 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.
Mid Typically used for “excellent effort” or better than best effort and would include
important business traffic that can tolerate some delay.
Low This is typically used for non-critical “background” traffic such as bulk
transfers that are allowed but that should not affect other applications and
users.
Table 57 Bandwidth Management Priorities
PRIORITY LEVELS: TRAFFIC WITH A HIGHER PRIORITY GETS THROUGH FASTER WHILE
TRAFFIC WITH A LOWER PRIORITY IS DROPPED IF THE NETWORK IS CONGESTED.
Table 58 Media Bandwidth Management Setup: Services
SERVICE DESCRIPTION
Xbox Live This is Microsoft’s online gaming service that lets you play multiplayer Xbox
games on the Internet via broadband technology. Xbox Live uses port 3074.
VoIP (SIP) Sending voice signals over the Internet is called Voice over IP or VoIP. Session
Initiated Protocol (SIP) is an internationally recognized standard for implementing
VoIP. SIP is an application-layer control (signaling) protocol that handles the
setting up, altering and tearing down of voice and multimedia sessions over the
Internet.
SIP is transported primarily over UDP but can also be transported over TCP,
using the default port number 5060.
FTP File Transfer Program 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
BitTorrent BitTorrent is a free P2P (peer-to-peer) sharing tool allowing you to distribute large
software and media files using ports 6881 to 6889. BitTorrent requires you to
search for a file with a searching engine yourself. It distributes files by corporation
and trading, that is, the client downloads the file in small pieces and share the
pieces with other peers to get other half of the file.
MSN Webcam MSN messenger allows you to chat online and send instant messages. If you use
MSN messenger and also have a webcam, you can send your image/photo in
real-time along with messages
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.
145


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