Core Network Transport Technologies

5 Day Course
Code PWL087

Book Now - 3 Delivery Methods Available:

Classroom Virtual Classroom Private Group - Virtual Self-Paced Online


Next generation networks will be deployed with high speed, high quality broadband DSL access capable of using flexible coding techniques. Multi-Service Access Nodes will carry services to Intelligent Nodes closer to the core where services will be located and then on to the network core using MPLS. The access is likely eventually to evolve into an all Ethernet service and the range of services carriers must deliver, will need to be carried over existing SDH services.

This course aims to provide an understanding of how these new services can be carried over SDH and how SDH is being enhanced to provide new capabilities to deliver the services in a flexible efficient manner. It will provide a detailed understanding for implementers, designers, managers and infrastructure engineers that need to plan, implement and use the new generation of networks and services.

The next generation of telecommunications networks will deliver broadband data and multimedia services to users. The Ethernet interface is becoming the interface of preference for user computers, IP Phones, Digital IP Television and network servers within the network itself. The network infrastructure will deliver these high performance IP services over Switched infrastructures deployed using Multi-Protocol Label Switching (MPLS).

MPLS is a radically new approach to delivering IP services and must be built on an IP routed infrastructure. 

However by deploying switching hardware it becomes possible to deliver quality of service by bypassing queues in routing functions and switching essentially in OSI layer 2. Once constructed MPLS networks can be used to deliver emulation services to provide customers with more traditional circuits provisioned over interfaces such as E1, Frame Relay, ATM and STM1 which in reality are provided emulated over MPLS running over Gigabit Ethernet infrastructures.


When you have completed this course you will be able to:

  • Describe how access services are evolving
  • Compare existing SDH transports with new evolving Next Generation SDH
  • MAP Access services to SDH with GFP
  • Employ Virtual Containers in the Transport
  • Utilize for efficient service deployment
  • Enhance switching technologies to interface to GMPLS core services
  • Deploy mechanisms to deliver End to End QoS for applications
  • Describe the basic function of MPLS
  • Select the appropriate options and mechanisms for Label Distribution
  • Compare the efficiency of routed and MPLS switched options for QoS networks
  • Build infrastructures using MPLS over different physical infrastructures
  • Provide reliability by deploying the re-routing options in the event of failures
  • Deliver high bandwidth MPLS services for OSPF and BGP4 routed networks
  • Engineer Traffic on MPLS services
  • Provide Emulated services over MPLS infrastructures


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Next generation Architecture (16 topics)

  • Why do we need Next Generation Networks?
  • Next Generation Service Demands
  • Access Speed Growth
  • Digital Subscriber Loop Services
  • Distance Speed Tradeoff
  • Multi Service Access
  • Metro Node Services
  • Core Services
  • Service Profiles
  • Management Control
  • Next Generation Access Services
  • User Service Interfaces
  • DSL Options
  • ADSL, ADSL-2+ and VDSL
  • DSL protocol Stacks
  • Ethernet Access Services

SDH Structure and Architecture (18 topics)

  • Evolution of Synchronous Optical Network (SONET)
  • STS, OC and STM Hierarchy
  • SDH Frames and Architectures
  • Header Overhead
  • Payload Envelopes
  • Virtual Containers
  • Multiplexing Structure
  • TUGs and VCs
  • Example carriage of E1 over VC12
  • Pointer Regeneration
  • Clock Transparency
  • Monitoring and Performance
  • Next Generation Service Mapping
  • Contiguous Concatenation
  • Virtual Concatenation
  • Bandwidth management
  • Virtual Container Transport
  • Mapping in Frames

Mapping Access Services to SDH Using Generic Framing Procedure (GFP) (15 topics)

  • G.7041/Y.1303
  • Purpose of GFP
  • Frame Mapped GFP (GFP-F)
  • Transparent GFP (GFP-T)
  • Relationship between Client and Transport Signals
  • Framing for User Frames
  • Payload Header
  • Type Field
  • GFP Control Frames
  • Frame Delineation
  • Example PPP Encapsulation
  • Error Handling
  • Transport Mapping for Low Latency Signals
  • Gigabit Ethernet Payloads
  • Other Payload Types

Virtual Concatenation (VCAS) for Using Bandwidth Efficiently (7 topics)

  • Virtual Concatenation (VCAT) G.707
  • VC Types
  • Contiguous Concatenation Types
  • Contiguous and Virtual Concatenation efficiency
  • virtual concatenation using VC-3-6v
  • H4 and K4 codification of Multiframes
  • H4 codification for VCAT Multiframes

Link Capacity Adjustment Scheme G.7042 (11 topics)

  • Purpose of LCAS
  • Bandwidth Allocation
  • Diversification Strategies
  • Asymmetric Configurations
  • LCAS Protocol
  • H4 and K4 byte contents
  • LCAS States
  • Example LCAS exchange
  • Using LCAS for connecting GbE between Sites
  • Sink and Source Messages
  • Interaction between VCAT and LCAS

Generalized Multi-Protocol Label Switching (GMPLS) (24 topics)

  • RFC 3471 and 4328
  • G.709
  • Functions of MPLS
  • Label Distribution Protocol
  • Forward Equivalence Classes
  • Generalized Label Request
  • Generalized PID (G-PID)
  • Bandwidth Encoding
  • Generalized Label
  • Label Set Information
  • Label Contention Resolution
  • Explicit Label Control
  • Fault Handling
  • Signaling extensions for G.709
  • Traffic Parameters
  • Label Distribution Rules
  • Optical Channel Label Space
  • RSVP-TE Signaling Protocol Extensions
  • CR-LDP Extensions RFC 3472
  • Format of Generalized Label
  • Label Set for CR-LDP
  • Interface Ids
  • Routing Extensions in support of GMPLS RFC 4202

End to End Quality of Service (17 topics)

  • Comparision between QoS approaches as Layers 2 and 3
  • Using DiffServ for End to End QoS
  • IP TOS Byte
  • IntServ, Its Strengths and Shortcomings
  • The Differentiated Services Architecture
  • Packet Marking
  • Per Hop Behaviors
  • The Default PHB (Defined in RFC-2474)
  • Class-Selector PHBs
  • Expedited Forwarding PHB (Defined in RFC-2598)
  • Assured Forwarding PHB (Defined in RFC-2597)
  • Delivering E2E QoS over Next Generation Networks
  • Mapping traffic at the access
  • Hierarchical QOS Management
  • Ingress and Egress Considerations
  • Maintaining QoS in the event of failure in the core
  • Fast Reroute

Services over Ethernet Optical Networks (12 topics)

  • Carrier Ethernet
  • Triple Play over Metro Ethernet
  • Ethernet Private Line
  • Carrier Level Specifications
  • Architecture framework
  • Ethernet Layer Specifications
  • Service Definition
  • Service Attributes
  • UNI
  • Transport Multiplex Function
  • Circuit Emulation Service over Ethernet (CESoE)
  • Ethernet Virtual Circuits

Next Generation Application Services (7 topics)

  • Revenue Sectors
  • Home Entertainment
  • Internet Broadcasting
  • Security, Control and Telemetry
  • Streaming Services
  • Local TV
  • Domestic Internet Conferencing

Evolution of Multi-Service Telecommunications Networks (7 topics)

  • Business environment for 21st Century Networks
  • Projecting the near future demands for services
  • Delivering Multimedia Services for Voice, Video and Television
  • Identifying the Quality of Service (QoS) needs
  • Analysing the problems with traditional IP routed Services
  • Adapting Internet Access to 21st Century needs
  • Solving the Quality of Service Delivery problems for Multi-service Delivery

MPLS Basics (9 topics)

  • What exactly is MPLS?
  • Identifying the characteristics of simple ¿½Plain Vanilla¿½ MPLS Services
  • Label Switched Routers
  • Ingress and Egress Label Edge Routers
  • Forward Equivalent Classes
  • Label Switched Paths
  • Selecting the Label headers appropriate to the technology
  • Distributing Labels with Label Distribution Protocol (LDP)
  • Comparing traffic patterns in routed and MPLS switched networks

Stacking Labels for Service Discrimination (5 topics)

  • Multi-Service Provisioning
  • Mechanisms used in ATM networks and their problems
  • Deploying Label Stacking for identification of Services
  • Tunnelling VPN services
  • Delivering Transit Networks Services

Pseudo Wire Services (7 topics)

  • What are Pseudo Wires?
  • Pseudo Wire Emulation (PWE) Architecture in RFC3916
  • Suitable Applications for PWE Services Encapsulation and frame ordering
  • Set-up and Tear-Down of PWE Services
  • Performance Monitoring
  • Fault Notification and Management
  • Quality of Service Needs

Quality of Service Options in MPLS Networks (7 topics)

  • Defining the objectives of QoS
  • QoS Options
  • Selecting Between Multiple QoS Paths
  • Deploying QoS using Class of Service and Experimental bits
  • Explicitly Routed LSP
  • RSVP for QoS
  • Constraint Based Label Switched Paths

Deploying QoS and Differentiated Services (8 topics)

  • Delivering QoS using Differentiated Services Code Points within IP
  • Forwarding Models for Diff-Serv Label Switched Routers
  • o Tunnelling model
  • o Pipe Model
  • o Uniform Model
  • Preconfigured Explicit Label Switched Paths
  • RSVP Extensions for Diff-Serv support
  • Intserv Service types

Delivering Reliability (7 topics)

  • Fault Tolerance objectives for MPLS
  • Establishing a Fault Tolerant Session with LDP
  • Recovering Failed LDP Sessions
  • Check-pointing and graceful termination
  • Fast rerouting Alternatives
  • Security Considerations
  • Implementation Issues

Delivering Quality In Practice (8 topics)

  • Conditions affecting QoS in Practice
  • Sporadicity
  • Queue Management Issues
  • Input and Output queues
  • Flow Based Queues
  • Class based Queues
  • Weighted Fair Queuing
  • Random Early Determination

Evolution to Optical Carrier Ethernet (14 topics)

  • Transition from SONET/SDH to Ethernet based systems
  • Carrier Ethernet-Based Converged Services Infrastructure
  • Ethernet in the First Mile and the Backhaul
  • IEEE 802.3 options
  • Optical Ethernet Options
  • Ethernet in the first mile
  • 1000BASE-LX, 1000BASE-SX
  • IEEE 802.1Q VLANs
  • Q-in-Q and MAC-in-MAC
  • Aggregation and Protection Options
  • Aggregation Options
  • Building Aggregated Backhaul


Delegates should have a solid understanding of IP and WAN technologies, plus a general understanding of telecommunications.

Additional Learning

The courses below may help you meet the knowledge level required to take this course.

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Different pricing structures are available including special offers. These include early bird, late availability, multi-place, corporate volume and self-funding rates. Please arrange a discussion with a training advisor to discover your most cost effective option.

Code Location Duration Price May Jun Jul Aug Sep Oct

and Virtual Classroom
5 Days $3,595
and Virtual Classroom
5 Days $3,595

and Virtual Classroom
5 Days $3,595

and Virtual Classroom
5 Days $3,595

and Virtual Classroom
5 Days $3,595

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

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