Demystifying 40 Gigabit Ethernet Physical Layer Interfaces in Data Centers Rita Horner Synopsys Santa Clara, CA USA April-May 2014 1 Evolution of Ethernet Speeds Data Rate (Mbps) 10 Gigabit Ethernet 100,000 10,000 40 GE (4x10 GE) Gigabit Ethernet 1000 FDDI 100 GE (10x10 GE) 100 GE (4x25 GE) Fast Ethernet 100 Ethernet 10 1 1980 Santa Clara, CA USA April-May 2014 1990 1995 1998 2002 2010 2014 2 Different Interfaces in a Chassis 1. 2. 3. Chip-to-Chip Port side Chip-to-Module (direct) Chip-to-Backplane 2 3 1 2 3 1 2 1 3 Santa Clara, CA USA April-May 2014 3 Evolution of 10 GE Port Side Aggregated 10 GE (XAUI) Serial 10 GE IEEE 802.3ae-2002 – 10 Gigabit Ethernet supporting both port side and backplane using aggregated XAUI (3.125 Gbps per lane in a x4 configuration) with 8b/10b encoding 10 GE Module form factor migration Gen1 300 pins 16-lanes XSBI X2 Gen2 4-lanes XAUI Xenpak 4-lanes XAUI XFP 1-lane 10G XFI Modules with Gearbox, a.k.a. MUX/De-MUX 2000 Santa Clara, CA USA April-May 2014 2001 2002 2003 Gen3 2004 SFP+ 1-lane 10G SFI Module with Retimer 2005 2006 2007 Un-retimed 2008 2009 4 10GE Port Side Module Interfaces Size Reduction Requires Power Reduction Port ASIC 4x 3.125 Gbps SerDes PHY 4 XAUI 4 Port ASIC 4 4x 3.125 Gbps Gearbox XFI Retimer XAUI SerDes (4:1) PHY 4 Port ASIC Santa Clara, CA USA April-May 2014 XENPAK Gearbox or (4:1) X2 XFP 10 GE SFP+ 10 GE 10 GE 10.3 Gbps SerDes 10 GE Retimer 10 GE PHY XFI 10 GE SFI 5 Evolution of Port Densities 10GE 40GE Single row 24 x 10 GE SFP+ ports 240 Gbps Two rows 48 x 10 GE SFP+ ports 480 Gbps Single row 4 x 40 GE CFP ports 160Gbps Single row 12 or 16 x 40 GE QSFP ports 480 to 640 Gbps Two rows 12 or 16 x 40 GE QSFP ports 960 to 1280 Gbps Santa Clara, CA USA April-May 2014 6 40GE Port Side Module Interfaces Size Reduction Requires Power Reduction Port ASIC Port ASIC 4 4x 10.3 Gbps SerDes PHY CFP 40 GE 4x 10.3 Gbps 40 GE Retimer 40 GE SerDes PHY QSFP 40 GE 4x 10.3 Gbps SerDes PHY QSFP 40 GE 4 Santa Clara, CA USA April-May 2014 Retimer XLAUI Port ASIC Retimer XLAUI XLPPI 40 GE XLPPI 7 Different Interfaces in a Chassis 1. 2. 3. Chip-to-Chip Port side Chip-to-Module (direct) Chip-to-Backplane 2 3 1 2 3 1 2 1 3 Santa Clara, CA USA April-May 2014 8 10GE and 40GE Interfaces Port Side Rate Interface Electrical 10 GE Module types Electrical 40 GE Module types Santa Clara, CA USA April-May 2014 Chip-to-Chip Backplane Chip-to-Module Fiber Optic Fiber Optic Copper XFI SFI (limiting & linear) SFI linear SFP+, 10GBASE-SR SFP+, DAC XFP, 10GBASE-SR SFP+, 10GBASE-LR (Direct XFP, 10GBASE-LR SFP+, 10GBASE-LRM Attached XFP, 10GBASE-ER SFP+, 10GBASE-ER Copper) XLAUI XLPPI CFP, 40GBASE-SR4 QSFP, 40GBASE-SR4 QSFP, CFP, 40GBASE-LR4 QSFP, 40GBASE-LR4 40GBASECFP, 40GBASE-ER4 QSFP, 40GBASE-ER4 CR4 10GBASE-KR - 40GBASE-KR4 - 9
© Copyright 2024 ExpyDoc
