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© 2013 Ethernet Alliance1 Moderator Greg McSorley, Amphenol Panelists 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 CableActive Copper CablesOptical 10/100/1000M Category 5/6 Coax SC/LC MM OM1/2 SC/LC SM 10Gb Category 6/7 SFP+ DAC LC MM OM1/2/3/4 LC SM 40Gb QSFP+ DAC 40GBASE-CR4 QSFP+ DAC LC MM OM3/4 LC SM 100Gb 10 x 10 CXP Direct Attach Twin Ax CFP2 Direct Attach Twin Ax CFP2 LC MM OM3/4 LC SM 100Gb 4 x 25 QSFP+ Direct QSFP+ DAC CFP4 DAC LC MM OM3/4 LC SM DAC = Direct Attach Twin Ax Cable
3© 2013 Ethernet Alliance 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
4© 2013 Ethernet Alliance Optical vs. Copper Cost Comparison at 100G Brad Booth Director, Network Architecture Office of the CTO | Enterprise Solutions Group
5© 2013 Ethernet Alliance Focus of Cost Comparison Area of Focus (Intra- rack) Leaf or Spine Switch 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 Modules Extending Density Chris Cole Director, Transceiver Engineering Finisar 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 0.625G2.5G10G25G50G Year GbE16x4x (3G)1x 40GbE 16x 4x1x (40G) 100GbE 10x4x2x 400GbE 16x8x
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 0.625G2.5G10G25G50G Year GbE16x4x (3G)1x 0.4x (MLG) 0.2x (MLG) 40GbE 16x 4x 1.6x (MLG) 1x (40G) 100GbE 10x4x2x 400GbE 16x8x
12© 2013 Ethernet Alliance Port Densities Extended Form Factor Electrical I/O Rows 10GE Ports 40GE Ports 100GE Ports SFP+1x10GDouble48N.A. QSFP+4x10GDouble17644N.A. QSFP28 4x10G 4x25G Single8822 (MMF only) CFP2 10x10G 4x25G Single CFP4 MLG4x25GSingle CFP4 MLG4x25GDouble CFP2 MLG8x50GSingle (10x 400GE) CFP4 MLG4x50GDouble
13© 2013 Ethernet Alliance 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)
14© 2013 Ethernet Alliance Pluggables vs. Socket Matt Traverso Engineering Manager Transceiver Module Group, Cisco Member Ethernet Alliance Board of Directors
15© 2013 Ethernet Alliance Pluggable Universe Optics designed Different optics/port types (reaches) Point A Point B
16© 2013 Ethernet Alliance Point A Point B Opt. Conn. Optical Engine Opt. Conn. Socket Optical Engine 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 PMD 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.
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