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Chapter 15 Bandwidth Management
P-660HWP-Dx User’s Guide
43
PHB consists of two types of services: EF (Expedited Forwarding) and AF (Assured
Forwarding). EF has higher priority. EF guarantees services with minimal loss and delay. AF
has four sub-classes, each with three levels of importance (drop precedence). A high drop
precedence means low importance.
15.10.2 Rule Configuration
Click the Edit icon or select User Defined from the Service drop-down list in the Rule Setup
screen to configure a bandwidth management rule. Use bandwidth rules to allocate specific
amounts of bandwidth capacity (bandwidth budgets) to specific applications and/or subnets.
Figure 133 Bandwidth Management Rule Configuration
Table 93 Sub-Classes of AF Services
DIFFSERV PRIORITY
LOW DROP
PRECEDENCE
MEDIUM DROP
PRECEDENCE
HIGH DROP
PRECEDENCE
SUB-CLASS4 AF41 AF42 AF43
SUB-CLASS3 AF31 AF32 AF33
SUB-CLASS2 AF21 AF22 AF23
SUB-CLASS1 AF11 AF12 AF13