Trends in Interconnects & Integration: Chasing
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Transcript Trends in Interconnects & Integration: Chasing
Trends in Interconnects &
Integration
Moderator Greg McSorley, Amphenol
Panelists
Brad Booth, Dell
Chris Cole, Finisar
Matt Traverso, Cisco
© 2013 Ethernet Alliance
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Gb Ethernet interconnects today
Passive Copper Cable
10/100/1000M
10Gb
Optical
Category 5/6
SC/LC MM
Coax
SC/LC SM
Category 6/7
SFP+
40Gb
Active Copper Cables
SFP+
DAC
DAC
QSFP+
40GBASE-CR4
DAC
QSFP+
DAC
LC
MM OM1/2/3/4
LC SM
LC
MM OM3/4
LC SM
100Gb 10 x 10
CXP
Direct Attach Twin Ax
CFP2 Direct Attach Twin Ax
•CFP2
LC
100Gb 4 x 25
QSFP+
•QSFP+
LC
Direct
DAC
•CFP4 DAC
OM1/2
MM OM3/4
LC SM
MM OM3/4
LC SM
DAC = Direct Attach Twin Ax Cable
© 2013 Ethernet Alliance
© 2012 Ethernet Alliance
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Panelists
Brad Booth
Director, Network Architecture
Office of the CTO | Enterprise Solutions Group
Chris Cole
Director, Transceiver Engineering
Finisar Corporation
Matt Traverso
Engineering Manager
Transceiver Module Group, Cisco
Member Ethernet Alliance Board of Directors
© 2013 Ethernet Alliance
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Optical vs. Copper Cost
Comparison at 100G
Brad Booth
Director, Network Architecture
Office of the CTO | Enterprise Solutions Group
© 2013 Ethernet Alliance
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Focus of Cost
Comparison
Leaf or Spine
Switch
Top of
Rack
Switch
Area of
Focus
(Intrarack)
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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
© 2013 Ethernet Alliance
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Relative Cost Graph
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Multi-Link Modules
Extending Density
Chris Cole
Director, Transceiver Engineering
Finisar Corporation
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I/O Lane Densities
I/O Lane
Rate
0.625G
2.5G
Year
1997 2000
2001 2004
2005 2008
10GbE
16x
4x (3G)
1x
40GbE
10G
16x
10x
400GbE
50G
2013 2016
2017 2020
4x
100GbE
2009 2012
25G
1x (40G)
4x
2x
16x
8x
Does 10G Lane density stops at 10G?
Does 40G Lane density stop at 40G?
© 2013 Ethernet Alliance
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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
© 2013 Ethernet Alliance
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I/O Lanes Extended
I/O Lane
Rate
0.625G
2.5G
Year
1997 2000
2001 2004
2005 2008
10GbE
16x
4x (3G)
1x
40GbE
10G
16x
2009 2012
4x
100GbE
10x
400GbE
© 2013 Ethernet Alliance
25G
50G
2013 2016
2017 2020
0.4x
(MLG)
1.6x
(MLG)
0.2x
(MLG)
1x (40G)
4x
2x
16x
8x
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Port Densities Extended
Form
Factor
Electrical
I/O
Rows
10GE
Ports
40GE
Ports
100GE
Ports
SFP+
1x10G
Double
48
N.A.
N.A.
QSFP+
4x10G
Double
176
44
N.A.
Single
88
22
22
(MMF only)
Single
100
20
10
QSFP28
CFP2
4x10G
4x25G
10x10G
4x25G
CFP4 MLG
4x25G
Single
180
36
18
CFP4 MLG
4x25G
Double
360
72
36
CFP2 MLG
8x50G
Single
320
100
40
(10x 400GE)
CFP4 MLG
4x50G
Double
576
144
72
© 2013 Ethernet Alliance
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CFP2 Port Density Example
Ex. 400GbE-LR4 CFP2
8x50G I/O
duplex LC
WDM HOM
10 ports
4Tb/s line card
Multi-channel MLG CFP2s
8x50G I/O (same slot)
MPO
4x 100GbE
(40 ports)
10x 40GbE
(100 ports)
32x 10GbE
(320 ports)
© 2013 Ethernet Alliance
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Pluggables vs. Socket
Matt Traverso
Engineering Manager
Transceiver Module Group, Cisco
Member Ethernet Alliance Board of Directors
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Pluggable Universe
Optics designed
Different optics/port types (reaches)
Point B
Point A
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Socketed Universe
Optics/port built onto card
Fixed optics/port types (reaches)
Point B
Point A
Opt.
Conn.
Optical
Engine
Socket
Optical
Engine
Socket
Opt.
Conn.
Example:
Avago Minipod
© 2013 Ethernet Alliance
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Generic Picture
Trading off the costs for
Trading off the costs for
Cable vs. PMD
Reach Flexibility vs. Optimized Reach
Trading off Handling
Cables w/ “dongles” vs. connectorized cables
Logical / Protocol Interfaces
MAC
PMD
Cable
PMD
MAC
Physical
Interfaces
© 2013 Ethernet Alliance
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Socket vs. Pluggable
Why Socket
Why Pluggable
Socketed design
optimized for single
reach & media
Fixed Port type
1) Pluggable
design
supports variety of
reaches & media
2) Pluggable
design
enables field
serviceability
3) Enables
a pay as you
grow model
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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.
© 2013 Ethernet Alliance
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