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Link scheduler configuration task list

SmartWare Software Configuration Guide 

Defining random early detection
The command 

 is used to request random early detection (RED). When a queue carries lots of 

TCP transfers that last longer than simple web requests, there is a risk that TCP flow-control might be ineffi-
cient. A burst-tolerance index between 1 and 10 may optionally be specified (exponential filter weight). The 

 

form of this command reverts the queue to default “tail-drop” behavior.

Mode: Source

Discarding Excess Load
The command 

 controls traffic arriving in a queue for class name. The value of the first argument aver-

age-kilobits defines the average permitted rate in kbps, the value of the second argument kilobits-ahead defines 
the tolerated burst size in kbps ahead of schedule. Excess packets are dropped.

This procedure describes defining discard excess load

Mode: Source

SmartWare supports including routed RTP packets in the QoS process. This is possible for plain streams as 
well as for encrypted streams in up- and downlink direction. The identification of the packets that have to be 
included in the QoS process base upon their size. In the service-policy profile exists a command that allows 
mapping of a specific packet size or a range to a traffic class. 

There are two predefined ranges the user can choose. One of them is ‘routed-voice’ that specifies a packet size 
range from 50 Byte to 280 Byte the other one is ‘routed-voice-encrypted’ that specifies a packet size range from 
92 Byte to 324 Byte. By selecting this predefined ranges all voice packets from G.729/10ms to G.711/30ms 
will be assigned to the configured traffic-class. 

Be aware that also other packets matching the configured size or range will be assigned to the specified traffic-
class. All values to be configured are in Byte and are IP Packet sizes (IP Header plus Payload). 

Defines random early detection (RED) for 
queues of for the selected traffic-class or policy 
name. The range for the optional value burst-
tolerance is from 1 to 10.

Defines how traffic arriving in a queue for the selected 
class or policy name has to be controlled. The value aver-
age-kilobits for average rate permitted is in the range 
from 0 to 10000 kbps. The value kilobits-ahead for burst 
size tolerated ahead of schedule is in the range from 0 to 
10000.