Service Emulation Over MPLS and IP Networks

2 Day Course
Code PDN073

This course has been retired. Please view currently available MPLS Training Courses.


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Background to Service Emulation (6 topics)

  • Functional convergence in service networks
  • The expanding role of ISPs
  • Previous experience of service emulation with ATM, CES, FRF.5, PPPoA etc.
  • Service Emulation vs Network Interworking
  • The place for Service Interworking
  • The emergence of service emulation from MPLS

IETF Pseudo-wire Emulation, PWE3 (9 topics)

  • Pseudo-wires and PSN tunnels
  • Encapsulating the emulated service
  • Pseudo-wire demultiplexing
  • Timing, sequencing and the control word
  • Native service processing
  • Attachment circuits and forwarders
  • Control Plane Architecture
  • Pseudo-wires over and MPLS backbone
  • Pseudo-wires over an IP backbone

The MPLS Approach to PWE3 (7 topics)

  • Establishing Label Switched Path Tunnels
  • Using LDP for signalling pseudo-wires
  • LDP Extensions for pseudo-wires
  • PW identifiers and attachment identifiers
  • Interface parameters
  • Status signalling
  • Auto-discovery for point to point meshes

The IP Approach to PWE3 (5 topics)

  • Routeing PSN Tunnels
  • L2TPv3 signalling and control channels
  • L2TP sessions and pseudo-wires
  • Status and keep-alive
  • Session identifiers and attachment circuits

Managing and maintaining service (5 topics)

  • The difference in IETF and ITU-T approaches to maintenance
  • Alarm propagation in MPLS and IP networks
  • Current maintenance techniques, LSP-Ping, ICMP and VCCV
  • Layering pseudowires over MPLS and IP
  • Avoiding confusion with IPv4 and IPv6

Delivering QoS to an Emulated Service (6 topics)

  • QoS provisioning for PSN tunnels
  • Signalling QoS for pseudo-wires
  • Mapping emulated service QoS to pseudo-wire QoS
  • Delay and delay variation issues
  • Using control word service features
  • Fragmentation

Emulating ATM Services (6 topics)

  • One-to-one and port modes
  • Single cell, multiple cells and AAL5 mode encapsulations
  • Control word usage
  • Support of ATM signalling
  • ATM path and channel connections
  • Handling OAM cells

Emulating Frame Relay and HDLC Services (5 topics)

  • PVC support in one-to-one and port modes
  • Frame Relay encapsulation and use of the control word
  • PVC status monitoring and LMI
  • Differences between IETF PWE3 and ITU X.84 specifications
  • Emulation of PPP and other HDLC services

Emulating Ethernet (5 topics)

  • LAN extension services
  • Ethernet encapsulation
  • Use of the control word and sequencing
  • Tagged mode and raw mode
  • Relationship with VPLS multipoint Ethernet services

TDM Emulation Over Packet Switched Networks (8 topics)

  • Features of structured TDM services
  • Frequency justification and structure pointers
  • Equipped bit masks
  • Use of RTP for timing and sequencing
  • UDP L2TPv3 and MPLS demultiplexing
  • Packet synchronization and transport timing
  • SDH/SONET maintenance signals and performance monitoring
  • Unstructured PDH services, SAToP

Service Interworking (3 topics)

  • Any to any packet interworking
  • Enabling Ethernet access
  • Realizing a converged service network


Delegates should possess a good understanding of data networking and voice communications principles.

Additional Learning

The courses below may help you meet the knowledge level required to take this course. If you are unsure please ask a training advisor .

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.”

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Excellent course, informative and well-paced.”

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

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Transport Designer, Orange

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