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Steve Joiner, Technical Committee ChairSteve Joiner, Technical Committee ChairJohn McDonough, Member OIF Board of DirectorsJohn McDonough, Member OIF Board of Directors
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Optical Internetworking Forum
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What is the OIF?
Why the OIF? Organization of Working Groups Possible Interaction OIF / ITU-T Summary
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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
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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
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Technical Committee Six 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
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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
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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
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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
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PLL Working Group
Adopted Packet OverSONET/SDH link layer
Interfaces internal to network elements• Benefits to system vendors and
technology vendors• Interface definitions lead to physical
module standardization, thus lower costs• Serializer/Deserializer-Framer
Interfaces (SFIs)• System Physical Interfaces (SPIs)• 10G and 40 G
Interfaces between network elements• Very Short Reach Interfaces (VSR)• Parallel optics solutions
for low cost10 G interfaces
Link Layer(Packet and Cell based Protocols)
Rest of the System
SONET/SDH Framer
PHY Layer
SERDES
E/O Transceiver
Transmission Media
SPI
SFI
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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
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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
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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
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UNI 1.0 Functions
SONET/SDH Connection Signaling• Establishment• Deletion• Status exchange
Automatic topology discovery Automatic service discovery SONET/SDH Transport
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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
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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
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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
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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.
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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.
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