e interface: 3750#debug auto qos 3750# conf t Enter configuration commands, one per line. End with CNTL/Z. 3750(config)# int g1/0/20 (50(config-if)# auto qos voip cisco-phone (config-if)# 3d04h: mls qos map cos-dscp 0 8 16 26 32 46 48 56 3d04h: mls qos 3d04h: no mls qos srr-queue input cos-map 3d04h: no mls qos srr-queue output cos-map 3d04h: mls qos srr-queue input cos-map queue 1 threshold 3 3d04h: mls qos srr-queue input cos-map queue 1 threshold 2 1 3d04h: mls qos srr-queue input cos-map queue 2 threshold 1 2 3d04h: mls qos srr-queue input cos-map queue 2 threshold 2 4 6 3d04h: mls qos srr-queue input cos-map queue 2 threshold 3 3 5 3d04h: mls qos srr-queue output cos-map queue 1 threshold 3 5 3d04h: mls qos srr-queue output cos-map queue 2 threshold 3 367 3d04h: mls qos srr-queue output cos-map queue 3 threshold 3 4 3d04h: mls qos srr-queue output cos-map queue 4 threshold 2 1 3d04h: mls qos srr-queue output cos-map queue 4 threshold 3 0 [-Lots of text removed- Chapter 19: Catalyst 3750 Features The interface's configuration will look as follows: interface GigabitEthernet1/0/20 srr-queue bandwidth share 10 10 60 20 srr-queue bandwidth shape 10 0 queue-set 2 auto qos voip cisco-phone The changes to the switch's global configuration are a bit more extensive. Thankfully, AutoQoS does all the work for you: mls qos map cos-dscp 0 8 16 26 32 46 48 56 mls qos srr-queue input bandwidth 90 10 mls qos srr-queue input threshold 1 8 16 mls qos srr-queue input threshold 2 34 66 mls qos srr-queue input buffers 67 33 mls qos srr-queue input cos-map queue 1 threshold 2 1 mls qos srr-queue input cos-map queue 1 threshold 3 0 mls qos srr-queue input cos-map queue 2 threshold 1 2 mls qos srr-queue input cos-map queue 2 threshold 2 4 mls qos srr-queue input cos-map queue 2 threshold 3 mls qos srr-queue input dscp-map queue 1 threshold 2 9 10 11 12 13 mls qos srr-queue input dscp-map queue 1 threshold 3 0123456 mls qos srr-queue input dscp-map queue 1 threshold 3 mls qos srr-queue input dscp-map queue 2 threshold mls qos srr-que