User Manual Part 1

Predefined QoS Classes
Chapter 9: Using Traffic Shaper 255
Table 41: Predefined QoS Classes
Class Weight Delay Sensitivity Useful for
Default 10 Medium
(Normal Traffic)
Normal traffic.
All traffic is assigned to this class by default.
Urgent 15 High
(Interactive Traffic)
Traffic that is highly sensitive to delay. For
example, IP telephony, videoconferencing,
and interactive protocols that require quick
user response, such as telnet.
Note that the weight (amount of bandwidth)
allocated to this class is less than the weight
allocated to the “Important” class. The
"Urgent" class is ideal for delay-sensitive
traffic that does not demand a high amount of
bandwidth.
Important 20 Medium
(Normal Traffic)
Important traffic that requires a high allocation
of bandwidth, but which is not exceptionally
sensitive to delays. For example, you can
prioritize the HTTP traffic of a company's
executive officers over other types of traffic,
by assigning it to the “Important” class.
Low Priority 5 Low
(Bulk Traffic)
Traffic that is not sensitive to long delays, and
which does not require a high guaranteed
bandwidth. For example, SMTP traffic
(outgoing email).
Note: In Simplified Traffic Shaper, these classes cannot be changed.