Course Name
ATM Fundamentals
Course Number
LS 122 106
Course Duration
2 days
Course Description
This course provides you with a deep overview to understand
Asynchronous Transfer Mode (ATM) in both practice and potential.
This class lays the foundation for ATM by explaining all the basics
from formats and headers to virtual circuits and connections. We
also explore the evolution to an ATM network from a non-ATM
network. You will gain a business perspective on how ATM
compares with alternative technologies, review the many
interfaces, and examine the protocol. In addition to an ATM
overview, specific topics featured in this course include: congestion
control, the adaptation layer, carrier services, ATM backbones, IP
over ATM, voice and video over ATM, Private Network-to-Network
Interface (PNNI), MPLS and ATM standard interfaces.
Course Objectives
This course covers the principles and developing specifications of
the ATM form: LAN Emulation, P-NNI, DXI, MPOA, Classical IP over
APM, B-ICI, Congestion Management, Network Management, local
ATM, and 51/25.6/100/155 Mbps physical protocols. Also included
are migration strategies and implementation problems. Topics
include:
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Overview of Physical layer, ATM layer and AAL layers
ATM Signaling
Key standards envisioned by the ATM Forum and their
implications
Major issues facing ATM signaling, traffic management,
network management and ATM deployment
Major obstacles ATM manufacturers and service providers
must overcome to convince customers to build ATM networks
today
The key standards envisioned by the ATM Forum and ITU-T
and their implications
Overview of ATM Signaling Protocol: PNNI
ATM and MPLS
Target Audience
This course is useful for network engineers and managers who
have responsibility in the following functional areas: network
design, network management, network operations, network
engineering and information systems. Internet providers and
managers
in
enterprise
organizations
who
have
telecommunications or network responsibility can benefit.
Prerequisites
None
Course Modules
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Executive Summary
What is ATM?
ATM key Benefits
ATM Core Concepts
ATM Cell Structure and Architecture
The Basics and Benefits of ATM
ATM Functionality
Bit-stream Transport
Frames vs. Cells
A Three-step Process
ATM Virtual Circuits
ATM Cell Header
ATM Network Interfaces
Congestion Control
Operations, Administration and Maintenance (OA&M) Cells
Header Functions
ATM Adaptation Types
ATM Signaling
ATM Layers
ATM Cell
Payload Type Identifier (PTI)
Preassigned VPI/VCI Values
ATM Adaptation Layer (AAL)
Physical Layer
ATM Adaptation Layers (AALs)
Service Classes: CBR, VBR-rt, VBR-nrt, ABR, UBR, GFR
Convergence Sublayer (CS)
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Segmentation and Reassembly Sublayer (SAR)
AAL 1: Adaptation for Constant Bit Rate Services
AAL2: Adaptation for Variable Bit Rate Services
AAL3/4: Adaptation for Data Services
AAL5: Adaptation for Data Services
ATM Service Classes
Class A Uses AAL1
Class B Uses AAL2
Class C Uses AAL3/4
Class D Uses AAL5
Types of AAL Protocols
AAL1, AAL2, AAL3/4, AAL5
Pros and Cons
ATM Layer/Cell Switching
UNI/NNI Cell Header
Generic Flow Control (GFC)
Virtual Path Identifier (VPI)
Virtual Channel Identifier (VCI)
Interim Local Management Interface (ILMI)
Payload Type Indicator (PTI)
Cell Loss Priority (CLP)
Header Error Control (HEC)
VPI Switching
VCI Switching
UNI and NNI
Cell Header
GFC, CLP, PTI, HEC, VPI/VCI
ATM Switching
Virtual Paths and Channels
VPI/VCI Switching
Broadcast and Multicast
UNI Signaling
Q.2931 and Metasignaling
Q.2931 and AAL 5
ATM Forum UNI 3.1/4.0 Signaling
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ATM ARCHITECTURE
ATM Physical Layer
HEC Checking
Cell Delineation
Scrambling
Cell Rate Decoupling
Transmission Frame Generation and Recovery
Cell Mapping
Cell Mapping via PDH and SDH
ATM UNI Interfaces
The DXI Interface
ATM Network Management and OAM
ATM Management Protocol
Different M Interfaces
Customer Network Management (CNM) for ATM Public
Network Service
ATM Management Model
ATM OSI and SNMP MIBs
Layer Management through Operations, Administration and
Maintenance (OAM) Flows
Permanent Virtual Circuits (PVCs)
Connection Admission Control (CAC) Procedures
Multiple Priority Levels for Traffic
Customer Access to Public Network Management Information
Web-Based Network Management Applications for ATM
ATM Traffic Management
COS
Quality of Service (QOS) Classes
Cell Transfer Delay
Cell Delay Variation
Cell Loss Ratio
Traffic Parameters
Service Categories
Flow Control with EFCI
Rate-based Flow Control and RM Cells
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Traffic Control and Policing
Traffic Descriptors and Service Classes
ATM Flow Control
Open Loop Control
Closed Loop Control
Available Bit Rate
Rate-based Proposal Offer
Early Packet Discard (EPD) and Random Early Discard (RED)
ATM Quality of Service (QoS)
Constant Bit Rate (CBR)
Variable Bit Rate (VBR) - Real Time, Non-real Time
Available Bit Rate (ABR)
Unspecified Bit Rate (UBR)
QoS Parameters (PCR, SCR, MBS, CDV, MCD)
Cell Loss Priority (CLP) Tagging
ATM Cell Transmission
How Cells Move
Virtual Channels
Virtual Paths
Virtual Channel Connection
ATM Header Identifiers
ATM Usage and Performance Parameters (Performance
Management)
ATM Usage Parameters
Peak Cell Rate (PCR)
Maximum Burst Size (MBS)
Sustainable Cell Rate (SCR)
ATM Performance Parameters
Cell Transfer Delay (CTD)
Cell Delay Variation (CDV)
Cell Loss Ratio (CLR)
Cell Error Ratio
Cell Misinsertion Ratio
Severely Errored Cell Block Ratio
Quality of Service (QOS) Standards
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ATM Transmission
PVC/SVC Creation Elements
Transportation Media
Twisted-pair Local Area Network (LAN)
Digital Signal Level 1 (DS1) and Digital Signal Level 3 (DS3)
Synchronous Optical Network (SONET)
Voice and Data Bit Rates
Signaling AAL
ATM Switch Architecture
Switch Functions
VPI/VCI Look Table
Design Criteria
Switch Performance Requirements
ATM Switch
OAM&P Interfaces
ATM Standards and Resources
ATM Forum
Bellcore/Telcordia
American National Standards Institute (ANSI)
ITU-T (formerly CCITT)
International Standards Organization (ISO)
IETF RFCs
Others
ATM MIGRATION AND INTEGRATION
Integration of SONET/ATM in Emerging Network Elements
Hybrid SONET/ATM Network
ATM Virtual Path (VP) Ring
Hybrid SONET/ATM DCS
ATM in Service Access Multiplexers
Hybrid SONET/ATM Network Issues
Broadband Survivability in SONET/ATM Networks
Integrated SONET/ATM Survivability
Survivability Mechanisms
Survivability Requirements
SONET/ATM Architecture Planning
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Evaluating Network Architecture Alternatives
Network, Operations and Economic Considerations
Role of SONET Planning Tool and ATM Planning Tool
Migrating to ATM
Possible Sequence for ATM Evolution
ATM LAN Switches in Buildings
ATM Backbone Evolution
Tiered Network Approach
Complex ATM Networks
ATM in the LAN
ATM in the LAN Backbone
ATM Native LAN
LAN Emulation
ATM WAN Implementation Issues
MPOA
VoATM
Migration Strategies
Implementation Problems
IP/ATM Networks
Logical Internet Protocol (IP) Subnets
Classical IP
IP over ATM-GFR
ATM Signaling
PNNI (Private Network Node Interface) Routing Protocol
Unicast Routing Protocols (RIP, OSFP, and BGP)
Multicasting Routing Protocol (DVMPR, MOSPF, PIM, and CBT)
Classical IP over ATM Model (RFC 1577)
Next Hop Resolution Protocol (NHRP)
Multiprotocol over ATM (MPOA)
Multilayer Switching (IP Switching, ARIS Switch)
Reservation Protocol (RSVP)
MPLS
LAN Emulation (LANE)
RFC 2225
ATM Edge Devices
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LANE Overview
Emulated LAN (ELAN)
LAN Emulation Client (LEC)
LANE Server
LAN Emulation Configuration Server (LECS)
LAN Emulation Server (LES)
Broadcast and Unknown Server (BUS)
Connections
LANE UNI (LUNI)
Direct
Data Direct VCC
Distribute
LAN Connection Establishment Procedure
LEC to LEC Connection Establishment Procedure
LANE Limitations
Multiprotocol Over ATM (MPOA)
MPOA Edge Devices
MPOA Servers
Connection Procedures
Next Hop Routing Protocol (NHRP)
Shortcut Establishment
IETF ATM Request for Comments and other Materials
RFC 1483 "Web optimized" version
Other IP over ATM materials
Network-to-Network Interface (NNI) Signaling
IISP
Routing Information
Call setup support
Private Network-to-Network Interface (PNNI)
Hierarchical format
Call setup processing
Peer groups
Peer group leaders
Hello protocol
Routing information exchanges
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Wireless ATM
Why Wireless ATM ?
Wireless ATM
Key Issues
Architecture
Cell Size
Virtual Circuit Management and Packet Routing
Physical Layer
Media Access Control (MAC)
Data Link Layer
Network Location and Connection Establishment
The Reality
Demonstration Labs
Lab 1: AAL5
Lab 2: SVC
Lab 3: PVC
Lab 4: Integrated LMI
Lab 5: CLIP/LANE
Lab 6: Ethereal Analyzer
Lab 7; ATM and MPLS