ZyXEL Communications Prestige 662HW Series, Руководство пользователя

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Prestige 662HW Series User’s Guide
20-8 Media Bandwidth Management
Table 20-2 Media Bandwidth Management: Summary
LABEL DESCRIPTION
Speed
(kbps) Enter the amount of bandwidth for this interface that you want to allocate using bandwidth
management.
This appears as the bandwidth budget of the interface’s root class (see section 20.9 ). The
recommendation is to set this speed to match what the interface’s connection can handle. For
example, set the WAN interface speed to 1000 kbps if the ADSL connection has an upstream
speed of 1000 kbps.
Scheduler Select either Priority-Based or Fairness-Based from the drop-down menu to control the
traffic flow.
Select
Priority-Based to give preference to bandwidth classes with higher priorities.
Select Fairness-Based to treat all bandwidth classes equally. See section 20.5 .
Maximize
Bandwidth
Usage Select this check box to have the Prestige divide up all of the interface’s unallocated and/or
unused bandwidth among the bandwidth classes that require bandwidth. Do not select this if
you want to reserve bandwidth for traffic that does not match a bandwidth class (see
section
20.6.1 ) or you want to limit the speed of this interface (see the Speed field description).
Back Click Back to go to the main Media Bandwidth Management screen.
Apply Click Apply to save your settings back to the Prestige.
Cancel Click Cancel to begin configuring this screen afresh.
20.9 Configuring Class Setup
The class setup screen displays the configured bandwidth classes by individual interface. Select an
interface and click the buttons to perform the actions described next. Click “+” to expand the class tree
or click “-“ to collapse the class tree. Each interface has a permanent root class. The bandwidth budget
of the root class is equal to the speed you configured on the interface (see
section 20.8 to configure the
speed of the interface). Configure child-class layers for the root class.
To add or delete child classes on an interface, click Media Bandwidth Management , then Class
Setup . The screen appears as shown (with example classes).
The example reserves 10 Mbps of unbudgeted bandwidth for traffic that is not defined in the
bandwidth filters (see
section 20.6.1 ). The Administration and Sales USA bandwidth classes each have
bigger bandwidth budgets than the total of the budgets of their child-classes. The child-classes can
borrow the extra bandwidth as long as they have bandwidth borrowing enabled (see
section 20.7 ).
Figure 20-8 Media Bandwidth Management: Class Setup