Total QoS for engineers

Description

Total QoS training course description

An advanced technical hands on course focusing on Quality of Service issues in IP networks.

What will you learn

• Explain the difference between Integrated services and differentiated services.
• Explain how DiffServ works.
• Explain how RSVP works.
• Design networks supporting QoS.

Total QoS training course details

Total QoS training course contents

• What is QoS

QoS and CoS, throwing bandwidth at the problem, Best effort services, Differentiated services, Integrated services, guarantees, the need for QoS, IETF working groups.

• Application issues

Video, Voice, other applications, Jitter, delay, packet loss. Flows, per flow and per aggregate QoS, Stateful vs. stateless QoS, applications vs. network QoS.

• 'Traditional' IP QoS

The TOS field and precedence, the obsolete OSPF use of the TOS field, TCP congestion avoidance.

• Queuing

Where to use queuing, FIFO, Priority queuing, Custom queuing, Weighted Fair Queuing, CBWFQ, PQWFQ, LLQ, RED and WRED.

• DiffServ

Architecture, DSCP, CU, packet classification and marking, meters and conditioners, Bandwidth brokers and COPS, Per Hop Behaviours, best effort PHB, Assured Forwarding PHB, Expedited forwarding PHB, Network Based Application Recognition (NBAR).

• Layer 2 issues

Fragmentation and interleaving, compression (codecs, MPEG formats, header compression…), 802.1p, Subnet bandwidth management, Bandwidth allocators and requestor modules, the use of MPLS, traffic engineering, traffic shaping.

• RSVP

What is RSVP? architectures, paths, path messages, reservations, traffic specifications, tear downs, guaranteed and controlled load, token buckets, Call Admission Control in voice networks, gatekeepers.

• Other issues

Policy based routing, the Resource Allocation Protocol, QoS management tools, baselining networks, design issues, QoS in IPv6, QoS and multicasts.