Quality Of Service (QOS) - Udemy

What you'll learn
What is QOS and how to do Classification & Marking
The ability to apply QOS where it is appropriate
Learn how Delay affects the network and how Dealy works
Congestion in a network and how to manage it
QOS on VPN: how to apply it
Requirements
Folks have basic understanding about Networking, CCNA, CCNP.
Description
Quality of Service End to end L3 QoS using MQCQuality of Service (QoS) is a mechanism or technology that handles network traffic and allocates capacity to ensure the performance of critical applications. All QoS mechanisms are designed to resolve or reduce bandwidth overutilization, delay, flapping, and packet loss in a network. DiffServ CoS and DSCP Mapping Classification & Marking . QoS classification refers to the process of classifying the type of IP packets or traffic. Traffic types can be data, video, or voice traffic.Convert marking to default Network Based Application Recognition (NBAR)NBAR is a deep packet inspection tool used to classify and recognize a wide range of protocols and applications utilizing data from Layer 3 to Layer 7, including applications that dynamically assign TCP and UDP port numbers. Marking using IP Precedence, DSCP, CoSSoftware Queue, PQ, CQ, WFQ, CBWFQ, and LLQ Tail dropTypes of Delay Processing delay – time it takes a router to process the packet headerQueuing delay – time the packet spends in routing queuesTransmission delay – time it takes to push the packet's bits onto the linkPropagation delay – time for a signal to propagate through the media Policing, shapingTraffic shaping is a QoS tool that allows higher-priority traffic to flow at optimal levels even when the bandwidth is highly utilized (prioritize traffic).Congestion management and avoidanceCongestion, in the context of networks, refers to a network state where a node or link carries so much data that it may deteriorate network service quality, resulting in queuing delay, frame or data packet loss and the blocking of new connections. In a congested network, response time slows with reduced network throughput.QOS over VPN
Overview
Section 1: Introduction
Lecture 1 Introduction Of Quality of service (QoS)
Section 2: Classification and Marking
Lecture 2 IP DSCP, TOS, COS
Lecture 3 IP DSCP to TOS & Vice-Versa, Classification, Marking & NBAR
Section 3: Traffic shaping & Policy
Lecture 4 Traffic Policy
Lecture 5 Traffic shaping
Section 4: Queue On router. Priority ,Custom, WFQ, CBWFQ, LLQ Queue
Lecture 6 Queue, Priority Queue (PQ), Custom Queue (CQ), Types of Delay
Lecture 7 Lab of PQ, CQ, WFQ, CBWFQ, and LLQ
Section 5: Congestion Avoidance
Lecture 8 QOS RED & WRED
Lecture 9 ECN & QOS pre-classify over DMVPN
Folks who is Preparing for CCIE Enterprise, Service Provider etc, and who wants to deep dive into QOS.


Homepage

https://www.udemy.com/course/quality-of-service-qos-congestion-management/