Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 778

threshold Applying a WRED Profile to Traffic After you create a WRED profile, you must specify on which traffic the system applies the profile. The system assigns a color-coded drop precedence - red, yellow, or green - to each packet based on the fourth bit of the 6bit DSCP field in the packet header before queuing it. • If the fourth DSCP bit is 0, packet is marked as green. • If the fourth DSCP bit is 1, the packet is marked as yellow (except for DSCP 63, which is marked as red). • If you do not configure honor DSCP values on ingress packets (trust diffservcommand), all traffic defaults to green drop precedence. See Honoring DSCP Values on Ingress Packets for more information. • Assign a WRED profile to either yellow or green traffic. QOS-POLICY-OUT mode wred Displaying Default and Configured WRED Profiles To display the default and configured WRED profiles, use the following command. • Display default and configured WRED profiles and their threshold values. EXEC mode show qos wred-profile Example of the show qos wred-profile Command Dell#show qos wred-profile Wred-profile-name wred_drop wred_teng_y wred_teng_g wred_fortyg_y wred_fortyg_g wred_oneg_y_pe wred_oneg_g_pe wred_teng_y_pe wred_teng_g_pe min-threshold 0 594 594 594 594 154 154 154 154 max-threshold 0 5941 5941 5941 5941 1538 1538 1538 1538 max-drop-rate 100 100 50 50 25 100 50 50 25 Displaying WRED Drop Statistics To display WRED drop statistics, use the following command. • Display the number of packets that the WRED profile drops. EXEC Privilege mode show qos statistics Examples of the show qos statistics Commands The following shows the show qos statistics output. Dell# show qos statitstics wred-profile WInterface Te 0/49 Drop-statistic Dropped Pkts Green 51624 Quality of Service (QoS) 778