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Optical Internetworking Forum. Steve Joiner, Technical Committee Chair John McDonough, Member OIF Board of Directors. What is the OIF?. Why the OIF? Organization of Working Groups Possible Interaction OIF / ITU-T Summary. What is OIF?. Launched in April of 1998

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Optical Internetworking Forum

Steve Joiner, Technical Committee Chair John McDonough, Member OIF Board of Directors

what is the oif
What is the OIF?
  • Why the OIF?
  • Organization of Working Groups
  • Possible Interaction OIF / ITU-T
  • Summary
what is oif
What is OIF?
  • Launched in April of 1998
  • Open forum: 340+ members including many of the world’s leading carriers and vendors
  • The only industry group bringing together professionals from the packet and circuit worlds
  • Addresses key issues in a timely fashion that are not being addressed elsewhere
  • Mission: To foster the development and deployment of interoperable products and services for data switching and routing using optical networking technologies
output from oif
Output from OIF
  • Develop implementation agreements among its members
    • Standalone documents representing broad agreement among members
  • OIF implementation agreements assure customers of consistent functionality and interoperability
  • Provides input into existing standards bodies and influences the development of standards
technical committee six working groups
Technical CommitteeSix Working Groups
  • Architecture
    • Services, network requirements and architectures
  • Carrier
    • Requirements and applications
  • Signaling
    • Protocols for automatic setup of lightpaths
  • OAM&P (Operations, Administration, Maintenance and Provisioning)
    • Network management
  • Interoperability
    • Interoperability testing
  • Physical and Link Layer
    • Equipment and subsystem moduleand optical interfaces
areas for standardization
Areas for Standardization
  • Network Architectures
    • Including Optical/DWDM technologies
    • Design for Data services
  • Physical layer transmission technologies
    • Higher line rates
    • Low Cost Short Reach Interfaces
    • More flexible framing structures
  • Layer 2 and 3 Transport and Encapsulation
    • New data centric protocols to transport
    • Collapsed protocol stacks
  • Network Management and Control
    • Simplify and automate management
    • Fast, flexible & efficient provisioning
oif and standards bodies
OIF and Standards Bodies
  • OIF submissions perform two functions:
    • Request standardization of specific OIF recommendations
    • Provide informational documents to the target standards group
  • Established Liaisons With:
    • ANSI T1
    • IETF
    • ATM Forum
    • IEEE 802.3ae 10 Gigabit Ethernet
    • Network Processor Forum
    • ITU-T SG 15
oif optical internetworking forum
OIF - Optical Internetworking Forum
  • UNI 1.0 - Optical User to Network Interface
    • Based upon GMPLS Signaling Protocols
  • Intra-carrier NNI work underway
  • Very Short Reach Optics (VSR) 10G and 40G
    • 12 fiber parallel, 4 fiber parallel,
    • 850nm serial, 1310nm serial
  • Internal System and Chip Interfaces
    • SPI - System Packet Interface
    • SFI - SERDES Framer Interface
pll working group
PLL Working Group
  • Adopted Packet OverSONET/SDH link layer
  • Interfaces internal to network elements
    • Benefits to system vendors andtechnology vendors
    • Interface definitions lead to physicalmodule standardization, thus lower costs
    • Serializer/Deserializer-FramerInterfaces (SFIs)
    • System Physical Interfaces (SPIs)
    • 10G and 40 G
  • Interfaces between network elements
    • Very Short Reach Interfaces (VSR)
    • Parallel optics solutionsfor low cost10 G interfaces

Rest of the System

Link Layer

(Packet and Cell based Protocols)


PHY Layer




E/O Transceiver

Transmission Media

pll agreements
PLL Agreements
  • 10Gb/s VSR Agreements
    • VSR-1, 12 fiber x 1.25Gb/s 850nm (<300m)
    • VSR-2, Serial 1310nm (<600m)
    • VSR-3, 4 fiber x 2.5Gb/s 850nm (<300m)
    • VSR-4, Serial 850nm (<300m)
  • Electrical Interface Agreements
    • SPI-3 OC48 System Packet Interface
    • SFI-4 OC192 Serdes-Framer Interface
    • SPI-4 phase 1 OC192 System Packet Interface
    • SPI-4 phase 2 OC192 System Packet Interface

PLL = Physical Link Layer

pll work in progress
PLL Work In Progress
  • VSR 40Gb/s Very Short Reach Optics
  • SPI-5 40Gb/s System Packet Interface
  • SFI-5 40Gb/s Serdes-Framer Interface
  • TFI-5 Framer to Fabric Interface
  • SFI-4 Phase 2 - OC192 Serdes-Framer Interface with narrower data paths.
  • Tunable laser – non-optical interface IA
signaling working group
Signaling Working Group
  • Define Signaling protocols used between optical network elements
    • Enables clients to establish optical connections
    • Re-uses work from other standards bodies
  • UNI 1.0 complete
    • Now in public domain as implementation agreement.
  • Future Project
    • UNI 2.0 started November 2001
    • Intra-carrier NNI started November 2001
uni 1 0 functions
UNI 1.0 Functions
  • SONET/SDH Connection Signaling
    • Establishment
    • Deletion
    • Status exchange
  • Automatic topology discovery
  • Automatic service discovery
  • SONET/SDH Transport
uni 1 0 protocol components
UNI 1.0 Protocol Components
  • Connection Signaling
    • RSVP or CR-LDP with GMPLS extensions
    • Additional UNI Objects/TLV’s
  • Service Discovery & Neighbor Discovery
    • Link Management Protocol (LMP)
    • Additional UNI TLV’s
  • UNI Transport
    • Out of band - via IP transport (eg Ethernet)may use separate wavelength
    • In Band - via SONET/SDH DCC
uni 1 0 and gmpls relationship
UNI 1.0 and GMPLS Relationship
  • Generalized Multi-Protocol Label Switching (GMPLS)
    • MPLS was designed to support forwarding of data based on packet or cell boundaries
    • Extensions to MPLS to include Time Division (SONET/SDH Add/Drop Multiplexers), wavelength (optical lambdas), and spatial switching
    • Gives MPLS a way to identify time slots or wavelengths
    • UNI 1.0 uses GMPLS formats
uni interoperability trials
UNI Interoperability Trials
  • UNI Interoperability trials - 25 vendors demonstrated UNI interoperability at SUPERCOMM - Atlanta, GA; June, 2001
  • 25 Vendors
  • Agilent
  • Avici
  • Alcatel
  • Ciena
  • Cinta
  • Cisco
  • Coriolis
  • Corvis
  • Geyser
  • Huawei
  • Metro-Optix
  • Lucent
  • Nortel
  • ONI
  • Optisphere
  • Optivera
  • Redback
  • Spirent
  • Sycamore
  • Tellium
  • Tenor
  • Turin
  • Village
  • Zaffire
objective of oif itu t interaction
Objective of OIF / ITU-T interaction
  • The OIF does not want to duplicate other work.
  • Our membership is substantially different in makeup to the ITU membership
  • The OIF will debate in its forum the pros/cons of different approaches.
  • Frequent and close communication will insure that the diversity of objectives and solutions will be heard and lead to the best solutions.
oif summary
OIF Summary
  • Brings together professionals from the data and circuit worlds
  • Addressing key issues important to carriers and vendors
  • Nine technical documents ratified as Implementation Agreements
  • Optical module interface standards will allow industry to gain needed economies of scale
  • Future work: (NNI) Network to Network Interface; richer functionality UNI 2.0; billing for UNI.