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Applications and Gaming > QoS >
Queue Management
26
DRAFT - 6/25/2010
QoS (Quality of Service)
Application-based QoS manages information as it is transmitted and received.
QoS
To use QoS, select Enabled. Otherwise, keep the default, Disabled.
Default Queue Index
Select the default queue (and priority) for applications not specified below:
1-8. (A lower value has higher priority.)
Queue Management
A new window appears.
Queue Management
•
Queue Index
There are eight queues for each interface. You can configure the
parameters but cannot add or delete queues.
Higher index queues generally represent higher-priority queues. Queues 1-3 are Strict
Priority (WP) queues, and Queues 4-8 are priority-based Weighted Fair Queues (WFQ).
•
Precedence
Enter the Precedence value of this queue relative to the others. A lower
value indicates higher precedence.
•
Scheduler
Select the scheduling algorithm: SP, WFQ, or WRR (Weighted Round
Robin). The default is SP.
•
Dropper
Select the dropping algorithm used if there is congestion: RED (Random
Early Detection), DT (Drop Tail), or WRED (Weighted RED). The default is WRED.
•
Weight
When WFQ or WRR is used, this option is available and used only for queues
of equal precedence. Queues 4-6 have equal precedence, and Queues 7-8 have equal
precedence. Queues 1-3 have higher precedence than Queues 4-6, while Queues 4-6
have higher precedence than Queues 7-8.
•
Shaping
If the Shaping rate is greater than or equal to 100, then it is the percentage
of physical bandwidth. If the Shaping rate is less than 100, then it is the rate in bits per
second. A value of -1 indicates no shaping. The default is -1.
•
Burst Size
Enter the Burst Size in bytes (1 to 10485760). For both leaky bucket (constant
rate shaping) and token bucket (variable rate shaping) algorithms, the Burst Size value
is the bucket size and the maximum burst size. If you set this value to zero, then the
Router will use the system default Burst Size, which is the current Shaping rate divided
by eight. The default is 0.
Click Save Settings to apply your changes, or click Back to QoS to cancel your changes
and return to the QoS screen.
Summary
The QoS rules are displayed with the following information: Port, Filters/Target, Queue
Index, Marks and On (status).
To move, edit, or delete a rule, select the entry (its color will change).
Move Up
To move a QoS rule up in precedence, click this option.
Move Top
To move a QoS rule to highest in precedence, click this option.
Move Down
To move a QoS rule down in precedence, click this option.
Move Bottom
To move a QoS rule lowest in precedence, click this option.
Delete
To delete a QoS rule, click this option.
Edit Rule
To change a QoS rule, click this option.
New Rule
To create a new QoS rule, click this option.
If you click Edit Rule or New Rule, a different screen appears.
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