Chapter 14 Bandwidth Management
Table 53 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.
Mid | Typically used for “excellent effort” or better than best effort and would include |
| important business traffic that can tolerate some delay. |
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Low | This is typically used for |
| transfers that are allowed but that should not affect other applications and |
| users. |
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14.6 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.
Table 54 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. |
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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 |
| 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. |
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FTP | File Transfer Program enables fast transfer of files, including large files that may |
| not be possible by |
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Electronic mail consists of messages sent through a computer network to specific | |
| groups or individuals. Here are some default ports for |
| POP3 - port 110 |
| IMAP - port 143 |
| SMTP - port 25 |
| HTTP - port 80 |
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BitTorrent | BitTorrent is a free P2P |
| 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. |
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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 |
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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. |
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ZyXEL | |
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