The next procedure uses as its example the topology in Figure 27–4.
The next procedure assumes that you have already configured the IPQoS systems on your network by performing the previous tasks in this chapter.
Review the configuration files for all IPQoS-enabled systems on your network.
Identify each codepoint that is used in the QoS various policies.
List the codepoints, and the systems and classes, to which the codepoints apply. The next table can illustrate areas where you might have used the same codepoint. This practice is acceptable. However, you should provide other criteria in the IPQoS configuration file, such as a precedence selector, to determine the precedence of identically marked classes.
For example, for the sample network that is used in the procedures throughout this chapter, you might construct the following codepoint table.
System |
Class |
PHB |
DS Codepoint |
---|---|---|---|
Goldweb |
video |
EF |
46 (101110) |
Goldweb |
goldweb |
AF11 |
10 (001010) |
Userweb |
webout |
AF12 |
12 ( 001100) |
BigAPPS |
smtp |
AF13 |
14 ( 001110) |
BigAPPS |
news |
AF18 |
18 ( 010010) |
BigAPPS |
ftp conformant traffic |
AF22 |
20 ( 010100) |
BigAPPS |
ftp nonconformant traffic |
AF31 |
26 ( 011010) |
Add the codepoints from your network's IPQoS configuration files to the appropriate files on the Diffserv router.
The codepoints that you supply should help to configure the router's Diffserv scheduling mechanism. Refer to the router manufacturer's documentation and web sites for instructions.