Transport of
Next-Generation Data Services over SDH
Course Duration:
3 days
Training Course Description:
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.
When you have completed this course you will be able to:
- Describe how access services are
evolving
- ompare 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
Prerequisites:
It will be assumed that attendees will already have a knowledge
of 21st Century Networks such as that obtained from courses in Multi
Service Access. The necessary skills can be gained by attending the
following courses:
- Understanding MultiService
Access and H.248 or
- Understanding MultiService
Access and SIP
Prerequisite courses:
- Understanding MultiService
Access and H.248
- Understanding MultiService
Access and SIP
Transport of Next-Generation
Data Services over SDH includes the following modules:
Next generation Architecture
- 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
- 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)
- 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
- 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
- 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)
- 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
- Signalling 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
- ISIS-TE and OSPF-TE
End to End Quality of Service
- 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
- 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
- Revenue Sectors
- Home Entertainment
- Internet Broadcasting
- Security, Control and Telemetry
- Streaming Services
- Local TV
- Domestic Internet Conferencing
|
