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P-2302R Series User’s Guide

203 Chapter 19 Bandwidth Management

19.9.1 Bandwidth Borrowing Example

Here is an example of bandwidth management with classes configured for bandwidth

borrowing. The classes are set up based on departments and individuals within certain

departments.

• The Sales class cannot borrow unused bandwidth from the Root class because the Sales

class has bandwidth borrowing disabled.

19.9.2 Maximize Bandwidth Usage With Bandwidth Borrowing

If you configure both maximize bandwidth usage (on the interface) and bandwidth borrowing

(on individual sub-classes), the Prestige functions as follows.

1 The Prestige sends traffic according to each bandwidth class’s bandwidth budget.

2 The Prestige assigns a parent class’s unused bandwidth to its sub-classes that have more

traffic than their budgets and have bandwidth borrowing enabled. The Prestige gives

priority to sub-classes of higher priority and treats classes of the same priority equally.

3 The Prestige assigns any remaining unused or unbudgeted bandwidth on the interface to

any class that requires it. The Prestige gives priority to classes of higher priority and

treats classes of the same level equally.

4 If the bandwidth requirements of all of the traffic classes are met and there is still some

unbudgeted bandwidth, the Prestige assigns it to traffic that does not match any of the

classes.

19.10 Configuring Summary

Click BW MGMT to open the Summary screen.

Use this screen to enable bandwidth management on an interface and set the maximum

allowed bandwidth and scheduler for the interface. You can also enable or disable maximize

bandwidth usage.

Table 80 Bandwidth Borrowing Example

BANDWIDTH CLASSES AND BANDWIDTH BORROWING SETTINGS

Root Class: Administration: Borrowing Enabled

Sales: Borrowing Disabled

Marketing: Borrowing Enabled

Research: Borrowing Enabled

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ZyXEL P-2302R Manuel d'utilisateur Page 204