Alfred Flores, RCDD Preterminated Assemblies Product Manager 40/100 GbE over Multimode Fiber Optical Infrastructure Essentials
Alfred Flores, RCDD Preterminated Assemblies
Product Manager
40/100 GbE over Multimode Fiber Optical Infrastructure Essentials
The Standard IEEE 802.3ba Objectives 40GBASE-xxx
• Provide Physical Layer
specifications which support 40 Gb/s operation over: – At least 100m on OM3 MMF – At least 7m over a copper cable
assembly – At least 1m over a backplane – At least 10 km over single-mode
Multimode Fiber
• OMx multi-mode fiber is: – Drawn from ISO/IEC 11801 Standard, Generic Cabling,
Customer Premises
Color has meaning • OM3 (2003) multi-mode fiber is:
– 50/125 µm
– 2000 MHz•km EMB*, minimum, at 850 nm
• OM4 (2009) multi-mode fiber is:
– 50/125 µm
– 4700 MHz•km EMB*, minimum, at 850 nm
• ANSI/TIA-598-C Optical Fiber Cable Color Code – Indoor cable with AQUA jacket must be compliant to TIA-492AAAC
– OM3 is TIA-492AAAC
• Loss Budget for 40/100 GbE – OM3, 1.9 dB
– OM4, 1.5 dB
* Effective Modal Bandwidth
Parallel Optics, MMF, 40 Gb/s
• MTP™*/MPO (Multi-fiber Push On) Connectors
• 8 or 12 Fiber Loose Tube or Ribbon cable
• Loss budget mandates pre-terminated solution *MTP is a registered trademark of USCONEC
40GBASE-SR4
Lanes 1 2 3 4
Lanes 4
10 11 12
Tx
Rx
* MTP is a registered trademark for USCONEC
Parallel Optics, MMF, 100 Gb/s
• 10 Fibers at 10 GbE each way with 12F MTP
• 40 GbE links re-used, need additional MTP/MTP trunk to complete channel, fibers 1 and 12 go dark
*MTP is a registered trademark of USCONEC
100GBASE-SR10 Tx
* MTP is a registered trademark for USCONEC
Lanes x 2 3 4 5 6 7 8 9 10 11 x
Parallel Optics, 100 Gb/s
• 24F MTP’s available today and approved in standard
• 24-Fiber MTP connections can significantly reduce pre-terminated densities
• Top Row Rx, Bottom Row Tx
SMF, 40/100 GbE, CWDM
• SM option will use CWDM
• 40GBASE-LR4 – 4 lasers (10-Gig) in
each fiber, LC ends – 1 fiber Tx, 1 fiber Rx
• 100GBASE-LR4 – 4 lasers (25-Gig) in
each fiber, LC ends – 1 fiber Tx, 1 fiber Rx
Transceiver Costs
• Actual MSRP • 10GBASE-SR • 10GBASE-LR • 40GBASE-SR4 • 40GBASE-LR4 • 100GBASE-LR4
•Estimated MSRP
• 100GBASE-SR10
Pricing sourced from sanspot.com on 01/31/2012
388x
$220 $445 $500 $3,674 $5,060
$38,475
10GBASE-SR (multimode)
10GBASE-LR (single-mode)
40GBASE-SR4 (multimode)
40GBASE-LR4 (single-mode)
100GBASE-SR10 (multimode)
100GBASE-LR4 (single-mode)
Optical Transceiver Costs
1x 2x 2x 16x 23x
175x
Channel Cost Ratios on OM3
• Traditional rule of thumb, 3x cost increase for 10x performance increase – Latest pricing shows 2x increase for 40GBASE-SR4 over
10GBASE-SR • Sample channel cost for 40GBASE-SR4
– 2x transceiver cost of $500 = $1000 – Trunk cable, 12F, OM3, MTP-MTP, 100m = $1200 – Channel cost = $2200
Channel Cost Estimate OS2
• Traditional rule of thumb, 3x cost increase for 10x performance increase – 16x increase for 40GBASE-LR4 over 10GBASE-SR
• Sample channel cost for 40GBASE-LR4 – 2x transceiver cost of $3700 = $7400 – Trunk cable, 12F, OS2, LC-LC, 100m = $600 – Channel cost = $8000 (almost 4x MMF)
– However, 40GBASE-LR4 can reach up to 10km
Applications Update: Single Mode versus Multimode Fiber
Fiber Type SMF LOMMF EB (OM3)
LOMMF FB/XB (OM4/OM4+)
Cable Cost Low High Higher
Transceiver Type CWDM Parallel Optics Parallel Optics
Transceiver Cost High Low Low
Optical Reach @ 10G 10 km 300 m 550 m/600 m Expected Reach @
40/100G 10 km 100 m 150 m
Availability of 40/100G
Yes Yes Yes
Comparison for 40/100 GbE Implementations
Optical Fiber Lifetime
• 10 years to 20 years
40/100 Gb Ethernet
10 year transition for 1G Ethernet 5 years for 10GBE 5 years for 40GBE
0
2
4
6
8
10
12
14
16 20
00
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
100M 1G 10G 40G 100G
Mill
ion
serv
er u
nits
Based on IDC (2009) Server Forecast and hays_01_0407 ratios of Ethernet port speed
Actual 40/100 GbE Performance
Data Rate
Channel Length 200m 600m 800m
RATE
100 Gigabit/s
RATE
40 Gigabit/s
400m
GIGAlite 10-FB OM4
40GBASE- SR4
GIGAlite -10 OM3 202m
100m
800m, 10 connections
40GBASE- SR4 150m
GIGAlite 10-FB OM4
GIGAlite -10 OM3
352m 4 conn.
252m 3 conn.
100GBASE- SR10 100m
100GBASE- SR10 150m
OM3
OM4
OM3
OM4
Traditional Data Centers Optical
• Typified by – 62.5 µm, 50/125 µm, FDDI Grade or singlemode
– Backbone cabling terminated to SC, ST, a few LC connectors
– Usually field terminated
– Masses of jumpers and backbone cabling
– Usually tight buffered cabling
Current Data Centers
• Typified by – 50/125 µm, OM3 (or OM2+)
Grade or singlemode
– Backbone cabling terminated to MTP*/MPO
– Cassettes with SC or LC connectors
– High port density actives driving the use of harnesses
*MTP is a registered trademark of USCONEC
Future Data Centers
• Typified by – 50/125 µm, OM3/OM4 (+) Grade or singlemode – Backbone cabling terminated to MTP*/MPO – MTP/MPO patch cords – Retrofit of SC/LC adapter panels to MPO adapter
panels (reutilization of MPO backbone cables) – Preterminated assemblies mandated
• 10GBASE, 2.6 dB loss budget (cable/connector) • 40/100GBASE, 1.9 dB (OM3) loss budget
(cable/connector)
Migration from 10 to 40/100
1 and 10G Networks
High-Density 10G Network Configurations
High-Density 10G Network Configurations
Easily Move to 40G Ethernet
Receive Transmit
Easily Move to 40G Ethernet 100G Ethernet for Leading Edge Networks
Receive
Transmit
Connectivity Options for 100G Ethernet Equipment
Receive Transmit
100G Ethernet for Leading Edge Networks
Latest Developments
MMF 100 GbE with Less Fibers
• 100GBASE-SR4 – Uses 4 fibers to transmit and 4 fibers to receive
– 25 GbE per fiber
– Same 12F trunk you install today reused again
– Target reach of 100m on OM4
– Target price of 100GBASE-SR10
– 4x 25 GbE transceiver not really there yet
Short Reach Single-mode
• 100GBASE-MR – Proposed solution for SMF reach to 1km (maybe 2km)
• Target cost near 100GBASE-SR4
• MTP (MPO) Connectors to QSFP+ port (just like MMF)
• If implemented, creates interesting questions on maintaining polarity (making sure Tx goes into Rx)
Transceiver Costs
Pricing sourced from sanspot.com on 01/31/2012
388x
$220 $445 $500 $3,674 $5,060
$38,475
10GBASE-SR (multimode)
10GBASE-LR (single-mode)
40GBASE-SR4 (multimode)
40GBASE-LR4 (single-mode)
100GBASE-SR10 (multimode)
100GBASE-LR4 (single-mode)
Optical Transceiver Costs
1x 2x 2x 16x 23x
175x
• 100GBASE-SR4 • 4x 25 GbE, 4F • OM4 • 100 m
•100GBASE-MR
• 4x 25 GbE, 4F • SMF, 12F needed • MTP, not LC • 1km (not 40km) • 17x less cost but 40x less reach
Recommendations
• OM3 or OM4 – Early results show OM4 superior in reach and
connection pairs
• Use MTP Trunks with Cassettes – Will cover 1 GbE and 10 GbE today
– Ready for seamless migration to 40/100 GbE
• Lowest price tag and GREEN too!
Alfred Flores Berk-Tek, a Nexans Company