Optical Internetworking Forum

Steve Joiner, Technical Committee ChairSteve Joiner, Technical Committee ChairJohn McDonough, Member OIF Board of DirectorsJohn McDonough, Member OIF Board of Directors

www.oiforum.comwww.oiforum.com

Optical Internetworking Forum


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 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

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

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 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 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 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

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


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

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

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

SONET/SDH Connection Signaling• Establishment• Deletion• Status exchange

Automatic topology discovery Automatic service discovery SONET/SDH Transport


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

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 - 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 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 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.

Business

Optical Internetworking Forum