© 2013 ethernet alliance1 moderator greg mcsorley, amphenol panelists brad booth, dell chris cole,...
TRANSCRIPT
© 2013 Ethernet Alliance 1
Moderator Greg McSorley, AmphenolPanelists
Brad Booth, Dell Chris Cole, Finisar
Matt Traverso, Cisco
Trends in Interconnects & Integration
2© 2013 Ethernet Alliance© 2012 Ethernet Alliance
Gb Ethernet interconnects today
Passive Copper Cable Active Copper Cables Optical
10/100/1000M Category 5/6Coax
SC/LC MM OM1/2SC/LC SM
10Gb Category 6/7SFP+ DAC
SFP+ DAC LC MM OM1/2/3/4LC SM
40Gb QSFP+ DAC 40GBASE-CR4QSFP+ DAC
LC MM OM3/4LC SM
100Gb 10 x 10 CXP Direct Attach Twin AxCFP2 Direct Attach Twin Ax
•CFP2 LC MM OM3/4LC SM
100Gb 4 x 25 QSFP+ Direct •QSFP+ DAC•CFP4 DAC
LC MM OM3/4LC SM
DAC = Direct Attach Twin Ax Cable
3© 2013 Ethernet Alliance
Panelists Brad Booth
Director, Network ArchitectureOffice of the CTO | Enterprise Solutions Group
Chris ColeDirector, Transceiver EngineeringFinisar Corporation
Matt TraversoEngineering ManagerTransceiver Module Group, CiscoMember Ethernet Alliance Board of Directors
4© 2013 Ethernet Alliance
Optical vs. Copper Cost Comparison at 100GBrad BoothDirector, Network ArchitectureOffice of the CTO | Enterprise Solutions Group
5© 2013 Ethernet Alliance
Focus of Cost Comparison
Area of Focus(Intra-rack)
Leaf or SpineSwitch
Top of Rack
Switch
6© 2013 Ethernet Alliance
Assumptions
Intra-rack connections Maximum reach is 3 meters All PHYs or modules use a four lane, 25 Gb/s
interface All links support 100 Gigabit Ethernet
Cable Copper-based technologies cannot re-use existing
cables Optics would be able to use OM3/4 MMF or SMF
Extrapolation of costs Existing technologies used as basis
Not considered Board area Power
7© 2013 Ethernet Alliance
Relative Cost Graph
8© 2013 Ethernet Alliance
Multi-Link ModulesExtending DensityChris ColeDirector, Transceiver EngineeringFinisar Corporation
9© 2013 Ethernet Alliance
I/O Lane Densities
Does 10G Lane density stops at 10G? Does 40G Lane density stop at 40G?
I/O Lane Rate 0.625G 2.5G 10G 25G 50G
Year 1997 - 2000
2001 - 2004
2005 - 2008
2009 - 2012
2013 - 2016
2017 - 2020
10GbE 16x 4x (3G) 1x
40GbE 16x 4x 1x (40G)
100GbE 10x 4x 2x
400GbE 16x 8x
10© 2013 Ethernet Alliance
Port Densities
Double Density SFP+: 48x 10GbE Smaller SFP+ (mSFP+) was not successful Is 48 the port limit for pluggable modules?
NO Multi-link I/O
OIF MLG or IEEE PMA w/ Virtual Lanes
Multi-channel pluggable modules OIF MLG MPO connector
11© 2013 Ethernet Alliance
I/O Lanes Extended
I/O Lane Rate 0.625G 2.5G 10G 25G 50G
Year 1997 - 2000
2001 - 2004
2005 - 2008
2009 - 2012
2013 - 2016
2017 - 2020
10GbE 16x 4x (3G) 1x 0.4x (MLG)
0.2x (MLG)
40GbE 16x 4x 1.6x (MLG) 1x (40G)
100GbE 10x 4x 2x
400GbE 16x 8x
12© 2013 Ethernet Alliance
Port Densities ExtendedFormFactor
Electrical I/O Rows 10GE
Ports40GEPorts
100GEPorts
SFP+ 1x10G Double 48 N.A. N.A.
QSFP+ 4x10G Double 176 44 N.A.
QSFP28 4x10G 4x25G Single 88 22 22
(MMF only)
CFP2 10x10G 4x25G Single 100 20 10
CFP4 MLG 4x25G Single 180 36 18
CFP4 MLG 4x25G Double 360 72 36
CFP2 MLG 8x50G Single 320 10040
(10x 400GE)
CFP4 MLG 4x50G Double 576 144 72
13© 2013 Ethernet Alliance
CFP2 Port Density Example
Ex. 400GbE-LR4 CFP2 8x50G I/O duplex LC WDM HOM 10 ports 4Tb/s line cardMulti-channel MLG CFP2s 8x50G I/O (same slot) MPO 4x 100GbE (40 ports) 10x 40GbE (100 ports) 32x 10GbE (320 ports)
14© 2013 Ethernet Alliance
Pluggables vs. SocketMatt TraversoEngineering ManagerTransceiver Module Group, CiscoMember Ethernet Alliance Board of Directors
15© 2013 Ethernet Alliance
Pluggable Universe
Optics designed Different optics/port types (reaches)
Point APoint B
16© 2013 Ethernet Alliance
Point APoint B
Opt.Conn
.
OpticalEngine
Opt.Conn
.
Socket
Socket
OpticalEngine
Socketed Universe Optics/port built onto card Fixed optics/port types (reaches)
Example:Avago Minipod
17© 2013 Ethernet Alliance
Generic Picture Trading off the costs for
Cable vs. PMD Trading off the costs for
Reach Flexibility vs. Optimized Reach Trading off Handling
Cables w/ “dongles” vs. connectorized cables
PMD Cable PMDMAC MAC
Logical / Protocol Interfaces
Physical Interfaces
18© 2013 Ethernet Alliance
Socket vs. Pluggable
Why Socket
Socketed design optimized for single reach & media
Fixed Port type
Why Pluggable
1)Pluggable design supports variety of reaches & media
2)Pluggable design enables field serviceability
3)Enables a pay as you grow model
19© 2013 Ethernet Alliance
Disclaimer
The views we are expressing in this
presentation are our own personal views and should
not be considered the views or positions of the
Ethernet Alliance.