
300 Chapter 15 Bandwidth management
NN47923-500
Bandwidth classes and filters
Use bandwidth subclasses to allocate specific amounts of bandwidth capacity
(bandwidth budgets). Configure a bandwidth filter to define a bandwidth subclass
based on a specific application or subnet. Use the Class Setup tab (see
“Bandwidth Manager Class Configuration” on page 305) to set up a bandwidth
class name, bandwidth allotment, and filter specifics. Each bandwidth subclass
consists of a single filter you can define by editing the subclass.
Unallocated bandwidth, bandwidth that is not controlled by a subclass you
specify, is allocated to traffic not controlled by any subclass. View your
configured bandwidth subclasses for a given interface in the Class Setup tab (see
“Configuring class setup” on page 303 for details). The total of the configured
bandwidth budgets cannot exceed the configured bandwidth budget for the
interface, as specified in “Configuring summary” on page 302.
Proportional bandwidth allocation
With bandwidth management, you can define how much bandwidth each class
gets; however, the actual bandwidth allotted to each class decreases or increases in
proportion to actual available bandwidth.
Application based bandwidth management
You can create bandwidth classes based on individual applications (like FTP,
H.323, and SIP).
Subnet based bandwidth management
You can create bandwidth classes based on subnets. Figure 97 shows LAN
subnets. You can configure one bandwidth class for subnet A and another for
subnet B.
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