Queue Profiles parameters
Digi TransPort User Guide
486
Queue Profiles parameters
The
Configuration > Network > Queue Profiles
page contains parameters to manage the
queue profiles. The queue profile determines how QoS queues with that profile assigned to them
will behave. Up to 12 queue profiles can be defined using this page. These profiles can then be
assigned to QoS queues as needed.
Queue
The queue number that relates to the queues defined in the DCSP mappings page.
Minimum kbps
The minimum data transfer rate in kilobits/second that the router will try to attain for the
queue.
Maximum kbps
The maximum data transfer rate in kilobits/second that the router tries to attain for this
queue. This means that if the router determines that bandwidth is available to send more
packets from a queue that has reached its
Minimum kbps
setting, it sends more packets from
that queue until the
Maximum kbps
setting is reached.
If the bandwidth on a queue should be restricted, setting the
Maximum kbps
value to the
same as, or lower than the
Minimum kbps
value ensures that only the
Minimum kbps
setting is achieved.
Maximum Packet Queue Length
The maximum length of a queue in terms of the number of packets in the queue. Any packets
received by the router that would cause the maximum length to be exceeded, are dropped.
WRED Minimum Threshold
The minimum queue length threshold for using the WRED algorithm to drop packets. Once the
queue length exceeds this value, the WRED algorithm may cause packets to be dropped.
WRED Maximum Threshold
The maximum queue length threshold for using the WRED algorithm to drop packets. Once
the queue length exceeds this value, the WRED algorithm causes all packets to be dropped.
WRED Maximum Drop Probability (%)
The maximum percentage probability used by the WRED algorithm to determine whether or
not a packet should be dropped when the queue length is approaching the WRED maximum
threshold value.
Note
If the length of a queue is less than the
WRED Minimum Threshold
value, there is a zero-
percent chance that a packet will be dropped. When the queue length is between the
WRED minimum and maximum values, the percent probability of a packet being dropped
increases linearly up to the WRED maximum drop probability.
