 qos srr-queue output dscp-map queue 2 threshold 3 mls qos srr-queue output dscp-map queue 3 threshold 3 mls qos srr-queue output dscp-map queue 3 threshold 3 mls qos srr-queue output dscp-map queue 4 threshold 1 mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue output dscp-map queue 4 threshold 3 01234567 mls qos queue-set output 1 threshold 1 138 138 92 138 mls qos queue-set output 1 threshold 2 138 138 92 400 mls qos queue-set output 1 threshold 3 36 77 100 318 Chapter 18: Catalyst 3750 Features mls qos queue-set output 1 threshold 4 20 50 67 400 mls qos queue-set output 2 threshold 1 149 149 100 149 mls qos queue-set output 2 threshold 2 118 118 100 235 mls qos queue-set output 2 threshold 3 41 68 100 272 mls qos queue-set output 2 threshold 4 42 72 100 242 mls qos queue-set output 1 buffers 10 10 26 54 mls qos queue-set output 2 buffers 16 6 17 61 mls qos If you're looking at someone else's router, and you see all this stuff, resist the urge to think he's some sort of QoS genius. Chances are he just ran AutoQoS! To see what interfaces AutoQoS is enabled on, use the show auto qos global command: 3750# show auto qos GigabitEthernet1/0/20 auto qos voip cisco-phone To disable AutoQoS on an interface, use the no auto qos voip interface command. To disable AutoQoS globally, use the no mls qos command. Beware that this disables all QoS on the switch. PART IV Telecom This section covers telecom technologies as they pertain to the data-networking world. A general glossary is presented, followed by detailed information regarding T1s, DS3s, and frame relay. This section is composed of the following chapters: Chapter 19, Telecom Nomenclature Chapter 20, T1 Chapter 21, DS3 Chapter 22, Frame Relay CHAPTER 19 Telecom Nomenclature Introduction and History The telecom world is a bit different from the data world, as endless telecom engi- neers will no doubt tell you. For example, a lot of the telecom infrastructure that exists today is the way it is because of standards that have bee