ATM: Networking and Internetworking

3 Day Course
Code PDN083

This course has been retired. Please view currently available data networking courses.


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Basic Concepts (6 topics)

  • What does an ATM network look like?
  • How ATM is different from other packet switching technologies
  • The basic principles of cell switching
  • Connection identifiers and how they are used
  • The advantages of the ATM approach in delivering quality of service
  • Comparison of ATM with other QoS technologies

ATM Connections (3 topics)

  • ATM connection characteristics
  • The significance between permanent and on-demand connections
  • Virtual channels and virtual paths

The ATM cell (3 topics)

  • why they are there and when they are used
  • The principle of point to multipoint connections
  • What are Soft/smart PVCs and where are they used

Above and Below (2 topics)

  • What we mean by the UNI and NNI interfaces.
  • The ATM Cell header format

Implementation Scenarios (4 topics)

  • at the UNI and NNI
  • The need for ATM Idle/unassigned and management cell
  • ATM layer Operation And Maintenance (OAM) cells
  • When are where these functions used?

ATM Standards (7 topics)

  • What is ATM adaptation and why do we need it
  • The layered approach to adaptation
  • The old and new ATM protocol architecture
  • Common layer ATM adaptation protocols (AAL1/AAL2/AAL5)
  • Adaptation convergence sublayer and SAR sublayers
  • The main physical layers used by ATM
  • ATM over SDH and PDH networks

Traffic Management and Quality of Service (5 topics)

  • How is a public ATM network presented to the customer
  • Different ATM service network architectures
  • What ATM features are available in today's ATM services?
  • How will ATM be provided as a service option in the future
  • Inhibitors to ATM deployment

Addressing (5 topics)

  • Who is in charge of ATM standardization?
  • Who are the main players?
  • The evolution of ATM standards
  • What is the role of the ATM Forum?
  • What standards are available now and what's coming along soon

Signalling (16 topics)

  • What is Quality of Service (QoS) and why is it ATM's biggest advantage
  • ATM service categories revisited (CBR/VBR/UBR/ABR)
  • ATM traffic contracts
  • Sizing considerations for ATM networks
  • The essential principles of traffic management
  • The differences between traffic policing and traffic shaping
  • Blocking and non-blocking switches
  • Traffic Control Functions
  • Early Packet Discard and Partial Packet Discard
  • The Generic Cell Rate Algorithm (Leaky Bucket Algorithm)
  • What is meant by Dual Leaky Buckets
  • ABR flow control procedures
  • Where will ABR be used
  • What QoS is available now?
  • Differences between the QoS available on PVCs and SVCs
  • Quality of service features in products

ATM Network Management (8 topics)

  • The difference between private and public ATM networks
  • Private and public ATM address structure
  • How to obtain registered ATM addresses
  • How do I assign addresses to my ATM network
  • How ATM addresses will be used in the future
  • Group addresses Anycast and scope
  • ATM address registration via ILMI
  • The ATM name service

LAN Emulation (9 topics)

  • The various components of ATM signalling
  • The UNI signalling protocol and its modular structure
  • A walk through of connection set-up
  • Setting up point to multipoint connections
  • The evolution of signalling capabilities from 3.x to 4.0
  • The future of ATM signalling - Leaf Initiated Join
  • Prefix based call routeing
  • Overview of Private Network Network Interface (PNNI) call routeing
  • Comparison with public routeing protocols

Other ATM Services (1 topic)

  • SS7 and BISUP


This course assumes that delegates have had previous exposure to data networks and understand the basic principles of data communications. Delegates should ideally have some Hands On experience in a support environment, although this is not strictly required.

What Our Customers Say

The training was delivered with a high level of expertise and excellence. Instructor was highly knowledgeable.”

Technical Trainer, Aviat Networks

Overall the course was really good, the trainer really understood the material and was very approachable.”

Customer Training Manager, Aviat Networks

Excellent course, informative and well-paced.”

CSE, Cisco

Course was very well outlined. Topics were great and bridged many gaps.”

System Engineer, Cable & Wireless

An excellent intro to video encoding & MPEG transport streams - I would definitely recommend it.”

Broadcast Engineer, Cisco

Definitely an excellent intro. Left me interested in learning more.”

Broadcast Engineer, Eircom

Excellent training course with real examples and practical classroom demonstrations.”

Transport Designer, Orange

Instructor knowledge and experience was excellent.”

Solutions Engineer, Akamai

Excellent course, very clear and well organised. Course content delivery was very good.”

Assistant Engineer, Dhiraagu

Very informative and appropriate.”

Network Support Technician, BT

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