Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 918

rate, it is considered to be green-colored or coded. When the transmitted traffic falls below the committed rate, the bandwidth, which is not used by any traffic that is traversing the network, is aggregated to form the committed burst size. Traffic is considered to be green-colored up to the point at which the unused bandwidth does not exceed the committed burst size. Allocating Bandwidth to Queue The switch schedules packets for egress based on Deficit Round Robin (DRR). This strategy offers a guaranteed data rate. Allocate bandwidth to queues only in terms of percentage in 4-queue and 8-queue systems. The following table shows the default bandwidth percentage for each queue. Table 72. Default Bandwidth Weights Queue Default Bandwidth Percentage for 4-Queue System 0 6.67% 1 13.33% 2 26.67% 3 53.33% 4 - 5 - 6 - 7 - Default Bandwidth Percentage for 8-Queue System 1% 2% 3% 4% 5% 10% 25% 50% When you assign a percentage to one queue, note that this change also affects the amount of bandwidth that is allocated to other queues. Therefore, whenever you are allocating bandwidth to one queue, Dell Networking recommends evaluating your bandwidth requirements for all other queues as well. • Allocate bandwidth to queues. bandwidth-percentage Assign each queue a bandwidth percentage ranging from 1 to 100%, in increments of 1%. Specifying WRED Drop Precedence You can configure the WRED drop precedence in an output QoS policy. • Specify a WRED profile to yellow and/or green traffic. QOS-POLICY-OUT mode wred For more information, refer to Applying a WRED Profile to Traffic. Quality of Service (QoS) 918