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End-to-end QoS deployment techniques for Cisco Catalyst series switches

• Examine various QoS components, including congestion management, congestion avoidance, shaping, policing/admission control, signaling, link efficiency mechanisms, and classification and marking

• Map specified class of service (CoS) values to various queues and maintain CoS values through the use of 802.1q tagging on the Cisco Catalyst 2900XL, 3500XL and Catalyst 4000 and 2948G/2980G CatOS Family of Switches
• Learn about classification and rewrite capabilities and queue scheduling on the Cisco Catalyst 5000
• Implement ACLs, ACPs, ACEs, and low-latency queuing on the Cisco Catalyst 2950 and 3550 Family of Switches
• Understand classification, policying, and scheduling capabilities of the Catalyst 4000 and 4500 IOS Family of Switches
• Configure QoS in both Hybrid and Native mode on the Catalyst 6500 Family of Switches
• Utilize Layer 3 QoS to classify varying levels of service with the Catalyst 6500 MSFC and Flexwan
• Understand how to apply QoS in campus network designs by examining end-to-end case studies

Quality of service (QoS) is the set of techniques designed to manage network resources. QoS refers to the capability of a network to provide better service to selected network traffic over various LAN and WAN technologies. The primary goal of QoS is to provide flow priority, including dedicated bandwidth, controlled jitter and latency (required by some interactive and delay-sensitive traffic), and improved loss characteristics.