SC328 New Developments in Optical Transport Networking (OTN)

Sunday, March 21, 2010
1:00 p.m.–4:00 p.m.
Stephen Trowbridge; Alcatel-Lucent, USA
Level: Beginner (no background or minimal training is necessary to understand course material)


Course Description

This course provides an introduction to revised ITU-T Recommendation G.709/Y.1331, Interfaces for the Optical Transport Network (OTN), focusing on new interfaces and capabilities for OTN in the first major revision of the standard since 2003. As DWDM networks have evolved, they have provided a common convergence layer for SONET/SDH, IP and Ethernet traffic. The latest version of the standard helps move from a combination of point-to-point DWDM line systems and metro ROADM networks to a full, end-to-end managed network. The OTN hierarchy has been extended "at both ends", adding a new lower tier (ODU0) optimized for the transport of 1000GBASE-X (Gigabit Ethernet), and a new upper tier (ODU4) optimized for the transport of the new 100GBASE-R (100 Gigabit Ethernet) currently being specified by the IEEE P802.3ba project. New mappings have been specified, including that for the new 40GBASE-R (40 Gigabit Ethernet) signal into existing 40G transport using the currently deployed ODU3. Additional capabilities have been provided to enable graceful integration of new data and circuit clients, via generic mapping procedure (GMP) and flexible ODU containers (ODUflex). OTN is being deployed by many operators for their next generation network builds. This course will cover the basic concepts of G.709, with specific emphasis on the recently added interfaces and capabilities. You will learn how IP, Ethernet and SONET/SDH traffic can be carried by an international standard based digital wrapper solution. You will develop an appreciation for the flexibility provided in the latest OTN standards to transport a wide variety of client signals and to efficiently manage bandwidth.


Benefits and Learning Objectives

This course should enable you to:

  • Understand the concepts that form the basis for an OTN based on G.709.
  • Learn about the new interfaces provided in the latest revision of the standard.
  • Apply the capabilities of the OTN standards to manage client signals and wavelengths.
  • Understand the mapping mechanisms used by OTN to transport major client signals.
  • Utilize the new flexibility of the latest standard for efficient bandwidth management.
  • Know where to look to find more information about G.709.

Intended Audience

This course is intended for anyone who designs, operates or supports metro and/or long haul optical networks and who needs to understand the new interfaces and capabilities in ITU-T Recommendation G.709 and how they can be used. Attendees of the 2009 course “An Introduction to OTN Networking and its Role in the Convergence of IP and SONET/SDH Networks” are encouraged to attend to learn about the new capabilities that have been recently standardized.


Biography

Dr. Stephen J. Trowbridge is a consulting member of technical staff (CMTS) at Alcatel-Lucent. He received his BS (electrical engineering and computer science), M.S. (computer science), and PhD (computer science) from the University of Colorado at Boulder. He joined Bell Laboratories-AT&T (now Alcatel-Lucent) in September 1977. He has been active in optical networking standardization since 1995. He is vice-chair of ITU-T TSAG, chairman of ITU-T Working Party 3/15 (responsible for OTN standards including G.709), chairman of the ATIS OPTXS-OHI working group, and a member of the IEEE P802.3ba editorial team.