Tài liệu DQoS docx

Chapter 1 Introduction Introduction Chapter 2 Overview List five benefits for implementing QoS in enterprise networks Describe how a converged network behaves without QoS Correctly describe the QoS framework Describe correctly what Call Admission Control does Describe the difference between Integrated Services and Differentiated Services Why Qos: 7 Convergence Challenges: 12 What is Qos: 5 QoS Service Types: 5 Cisco QoS Tools: 13 QoS Introduction Describe the need for IP QoS Describe the Integrated Services model Describe the Differentiated Services model Describe the building blocks of IP QoS mechanisms (classification, marking, metering, policing, shaping, dropping, forwarding, queuing) List the IP QoS mechanisms available in the Cisco IOS Describe what QoS features are supported by different IP QoS mechanisms Need for QoS: 14 IntServ Model: 11 DiffServ Model: 19 QoS Building Blocks: 12 Enterprise Case Study: 6 SP Case Study: 5 Chapter 3 Classification and Marking Explain the reason for classification and marking Explain the difference between classification and marking Explain class of service (CoS), IP Precedence, and DiffServ code points Configure QoS policy using Modular QoS CLI Explain the role of network-based application recognition (NBAR) Classify and mark traffic Classification: 1 Packet Marking: 8 (DiffServ PHB) MQC Classification (DSCP map example) Class-Based marking example MQC l2-l3 map example NBAR (inc. Protocol Discovery):8 Classification w/ Route Map:2 Classification w/ Dial Peer:2 Precedence marking w/ CAR:1 Classification and Marking Mechanisms Describe Policy-based routing and how it can be used to classify and mark IP packets Describe QoS Policy Propagation through BGP and how it can be used to classify and mark IP packets List other mechanisms that also support classification and marking capabilities (Committed Access Rate, Class-based Marking). Policy Based Routing - configuring and case study: 17 QPPB (inc/ CEF review): 20 CAR, Class-based marking: 4 Chapter 4 Congestion Management Identify and differentiate between the different IOS queuing techniques Correctly apply each queuing technique to the appropriate application Describe the difference between IP RTP Priority and low latency queuing (LLQ) Configure WFQ, CBWFQ, and LLQ Queuing Overview: FIFO: 1 PQ: 1 CQ:1 WRR: 1 WFQ: 4 CBWFQ: 11 IP RTP Priority: 8 LLQ: 9 Queueing Mechanisms Describe and configure FIFO Queuing (FQ). Describe and configure Priority Queuing (PQ). Describe and configure Custom Queuing (CQ). Describe and configure basic Weighted Fair Queuing (WFQ), distributed WFQ, ToS-based distributed WFQ and QoS-group-based distributed WFQ. Describe and configure Modified Weighted Round Robin (MDRR) queuing. Describe and configure IP RTP Prioritization. Explain,Cfg, Monitor and Troubleshoot All: FIFO:6 Priority Q:14 Custom Q:18 WFQ:29 dWFQ:31 MDRR:15 IP RTP:8 Chapter 5 Congestion Avoidance Explain how TCP responds to congestion Understand tail drop and global synchronization Identify and differentiate between the following IOS congestion avoidance tools: RED, WRED, and flow-based WRED Configure IOS congestion avoidance features TCP Behavior: 6 Avoidance Techniques: RED: 3 Configuring: WRED: 9 FRED: 2 (no explanation of FRED) Traffic Shaping and Policing Describe and configure Generic Traffic Shaping (GTS). Describe and configure Frame Relay Traffic Shaping (FRTS). Describe and configure Committed Access Rate (CAR). Name other mechanisms that support traffic shaping and policing (Class-based Policing and Class-based Shaping). Shaping and Policing: 9 GTS: 25 FRTS: 20 CAR: 32 DQoS QoS Chapter 6 Link Efficiency Understand the need for link efficiency tools Understand available LFI techniques, including MLP interleaving and Frame Relay fragmentation using FRF.11 Annex C or FRF.12 Understand Compressed Real-Time Protocol (CRTP) header as a tool for improving link efficiency Configure and monitor various LFI methods and CRTP LFI: 3 MLP Interleaving: 9 FR Fragmentation: FRF.11/.12: 15 cRTP: 12 Congestion Avoidance Describe Random Early Detection (RED). Describe and configure Weighted Random Early Detection (WRED). Describe and configure Flow-based WRED. RED / TCP Behavior: 11 WRED: 22 FRED: 11 Chapter 7 Policing and Shaping Describe the difference between policing and shaping and how each one relates to QoS Describe various mechanisms for policing, when to apply each, and how to configure them Identify the various types of traffic shaping, their differences, and how to apply each Configure the different types of traffic shaping Shaping and Policing: 3 Token Bucket: 3 CAR Policing: 19 CB Policing: 7 Shaping: 5 CB Shaping: 6 GTS: 14 DTS: 3 FRTS: 27 Link Efficiency Mechanisms Describe and configure Stacker payload compression Describe and configure Predictor payload compression Describe and configure TCP header compression Describe and configure RTP header compression Describe and configure Link Fragmentation and Interleaving Describe and configure Frame Relay Fragmentation Payload Compression: 20 Predictor Stacker MPPC Header Compression: 19 TCP RTP LFI: 21 MLP FRF.11 / .12 Chapter 8 Call Admission Control Correctly list five local CAC methods and their primary functions Correctly list two measurement-based CAC methods and their primary functions Correctly describe IntServ/RSVP and its main function Given an enterprise network scenario, correctly determine which method(s) of achieving call admission control best meets the customer requirements CAC: 5 Local CAC: 16 Meas. Based CAC: 11 Resource Basec CAC: 10 RSVP: 12 CAC Features: 5 QoS Signalling Describe Resource Reservation Protocol (RSVP). Configure RSVP. Describe and configure RSVP on shared media using Subnet Bandwidth Management (SBM). Monitor and troubleshoot RSVP. RSVP:20 SBM:8 Chapter 9 Management Tools Utilize QoS Device Manager to monitor performance, establish baselines and configure QoS policies Utilize QoS Policy Manager to configure advanced QoS policies, scale policy deployment, upload/verify/rollback policies, and deploy QoS policies by external time-based/event-based scripts Configure Cisco Service Assurance Agent to measure key SLA metrics and monitor network performance between local and remote devices Monitor and troubleshoot network performance with IPM and SMS Overfview: 6 QDM: 8 QPM: 17 SAA: 9 IPM: 4 SMS: 11 Modular QoS CLI Classification Describe the classification part of the Modular QoS CLI Describe and configure all currently supported classification options within the MQC Understand Network-based Application Recognition (NBAR) Monitor and troubleshoot class maps Chapter 10 QoS Design Design a converged multiservice network to provide proper QoS for voice, video, and data traffic Design 1(Policy): 5 Design 2(characterize):4 Design 3(implement):6 Design 4(monitor):3 Voice Design: 13 Video Design: 8 VVD: 4 Campus QoS: 8 SNA & QoS:5 Tunnels: 3 Modular QoS CLI Service Policy Describe the policy part of the Modular QoS CLI Configure packet marking with modular CLI Configure policing and shaping with modular CLI Configure class-based WFQ with modular CLI Configure congestion avoidance mechanisms (WRED) with modular CLI Configure low-latency queuing Monitor and troubleshoot policy maps. Chapter 11 Wrap-Up IP over ATM QoS List the requirements of IP QoS in combination with ATM QoS Describe the hardware and software requirements for advanced IP QoS mechanisms on ATM interfaces Describe per-VC queuing Describe and configure per-VC WRED Describe and configure VC bundling Describe and configure per-VC CB-WFQ Describe RSVP to SVC mapping Monitor and troubleshoot IP QoS on ATM interfaces Chapter 12 IP over MPLS QoS Explain the need for integration of QoS into MPLS Describe the QoS mechanisms available in Frame- mode MPLS Describe the QoS mechanisms in Cell-mode MPLS Configure and troubleshoot QoS in Frame-mode MPLS Basic MPLS: 14 Frame-mode MPLS QoS: 12 Cell-mode MPLS: 8 . and Class-based Shaping). Shaping and Policing: 9 GTS: 25 FRTS: 20 CAR: 32 DQoS QoS Chapter 6 Link Efficiency Understand the need for link efficiency tools