ZyXEL Communications NBG420N - Manual (Page 202)

Chapter 17 Bandwidth Management
NBG420N User’s Guide
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17.7 Default Bandwidth Management Classes and Priorities
If you enable bandwidth management but do not configure a rule for critical traffic like VoIP,
the voice traffic may then get delayed due to insufficient bandwidth. With the automatic traffic
classifier feature activated, the NBG420N automatically assigns a default bandwidth
management class and priority to traffic that does not match any of the user-defined rules. The
traffic is classified based on the traffic type. Real-time traffic always gets higher priority over
other traffic.
The following table shows you the priorities between the three default classes (AutoClass_H,
AutoClass_M and Default Class) and user-defined rules. 6 is the highest priority.
17.8 Bandwidth Management General Configuration
Click Management > Bandwidth MGMT to open the bandwidth management General
screen.
Figure 121 Management > Bandwidth MGMT > General
Table 74 Bandwidth Management Priority with Default Classes
CLASS TYPE PRIORITY
User-defined with high priority 6
AutoClass_H 5
User-defined with medium priority 4
AutoClass_M 3
User-defined with low priority 2
Default Class 1