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Resource Management by Tom Bialaski, Enrique Vargas, Evert Hoogendoorn, Adrian Cockcroft, Richard Mc Dougall

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How Bandwidth Allocation Works

Bandwidth is allocated to a class of network traffic. The class of a packet is defined by some or all of the following factors:

  • IP source address

  • IP destination address

  • IP protocol (TCP, UDP, or other)

  • Source ports for TCP and UDP

  • Destination ports for TCP and UDP

  • Type of Service (ToS) value in the IP header

  • URL or URL group

Class definitions are hierarchical and every class has a parent. For example, if you define a class for FTP traffic and a class for FTP traffic to a host called pear, the classes are connected in a hierarchy as shown in FIGURE 9-1.

Figure 9-1. Hierarchical Class Definitions

In this example, the ftp ...

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