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400ZR Specification Update
Copyright © 2019 OIF 1
Copyright © 2019 OIF 2
RNGRNG
Typical (Microsoft) Application
DC DC
Benefit
• 400ZR enables the DCI application to happen without requiring
significant additional equipment (size, space, power, expense). The
inclusion of a DCI capability doesn't require much more equipment
and the network equipment diagrams collapse to something very
similar to a diagram that would be for internal DC links.
• Low cost 400ZR allows data centers to be distributed across a region,
providing more agility and scalability than the mega data center.
Copyright © 2019 OIF 3
400ZR Scope
Copyright © 2019 OIF 4
OIF 400ZR Objectives
• Standardized interface for:
• Short Reach (120 km or more) DWDM amplified links
• Unamplified loss limited links
• 400GBASE-R PHY Host/Client System Side Interface
• 60GBaud 16QAM Coherent Modulation (400G/λ)
• Form-factor agnostic. Target <15W pluggable DCO architecture with port
densities equivalent to grey client optics.
• Leverage other standards bodies work including IEEE 802.3 and ITU-T SG-15
Copyright © 2019 OIF 5
400ZR Amplified Point-to-Point Use Cases
400ZR400ZR
Switch /
Router A
Switch /
Router B
DWDM Mux
Amplifier
DWDM Mux
Amplifier
400ZR 400ZR
Switch /
Router A
Switch /
Router B
Transponder TransponderDWDM Mux
Amplifier
DWDM Mux
Amplifier
Copyright © 2019 OIF 6
Switch /
Router A
Switch /
Router B
Transponder Transponder
400ZR 400ZR
400ZR Unamplified Point-to-Point Use Cases
Switch /
Router A
Switch /
Router B
400ZR 400ZR
Copyright © 2019 OIF 7
OIF 400ZR Implementation
• Standard FEC implementation required
• Concatenated FEC (C-FEC) with a post-FEC error floor <1E-15
• Framing leverages 400GXS (Extender Sublayer) and simplified GMP
mapping
• 15W enabled by low power 7nm DSP
• Module form-factor agnostic, but extensions to the module management
interface software to support coherent modulation and/or DWDM.
• Optical specifications – Is EVM ready?
• Hint: look at our demo
Copyright © 2019 OIF 8
OIF 400ZR Status
• Project start Nov 2016
• FEC decision Jul 2017. Initial ballot Aug 2018. Next ballot this quarter.
• Continued liaison activity with IEEE 802.3 and ITU-T SG-15.
• Initial 7nm DSP implementations “soon.”
• OIF Implementation Agreement - Coherent Module Management Interface
Specification, ready for ballot this quarter.
• Common Management Interface System (CMIS), used in QSFP-DD, OSFP, and COBO
has reserved register map for DWDM and coherent implementations.
• Updated optical specifications out for review
• Maturing EVM measurement methodology
Copyright © 2019 OIF 9

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OIF OFC 2019 400ZR Specification Update

  • 2. Copyright © 2019 OIF 2 RNGRNG Typical (Microsoft) Application DC DC
  • 3. Benefit • 400ZR enables the DCI application to happen without requiring significant additional equipment (size, space, power, expense). The inclusion of a DCI capability doesn't require much more equipment and the network equipment diagrams collapse to something very similar to a diagram that would be for internal DC links. • Low cost 400ZR allows data centers to be distributed across a region, providing more agility and scalability than the mega data center. Copyright © 2019 OIF 3
  • 5. OIF 400ZR Objectives • Standardized interface for: • Short Reach (120 km or more) DWDM amplified links • Unamplified loss limited links • 400GBASE-R PHY Host/Client System Side Interface • 60GBaud 16QAM Coherent Modulation (400G/λ) • Form-factor agnostic. Target <15W pluggable DCO architecture with port densities equivalent to grey client optics. • Leverage other standards bodies work including IEEE 802.3 and ITU-T SG-15 Copyright © 2019 OIF 5
  • 6. 400ZR Amplified Point-to-Point Use Cases 400ZR400ZR Switch / Router A Switch / Router B DWDM Mux Amplifier DWDM Mux Amplifier 400ZR 400ZR Switch / Router A Switch / Router B Transponder TransponderDWDM Mux Amplifier DWDM Mux Amplifier Copyright © 2019 OIF 6 Switch / Router A Switch / Router B Transponder Transponder 400ZR 400ZR
  • 7. 400ZR Unamplified Point-to-Point Use Cases Switch / Router A Switch / Router B 400ZR 400ZR Copyright © 2019 OIF 7
  • 8. OIF 400ZR Implementation • Standard FEC implementation required • Concatenated FEC (C-FEC) with a post-FEC error floor <1E-15 • Framing leverages 400GXS (Extender Sublayer) and simplified GMP mapping • 15W enabled by low power 7nm DSP • Module form-factor agnostic, but extensions to the module management interface software to support coherent modulation and/or DWDM. • Optical specifications – Is EVM ready? • Hint: look at our demo Copyright © 2019 OIF 8
  • 9. OIF 400ZR Status • Project start Nov 2016 • FEC decision Jul 2017. Initial ballot Aug 2018. Next ballot this quarter. • Continued liaison activity with IEEE 802.3 and ITU-T SG-15. • Initial 7nm DSP implementations “soon.” • OIF Implementation Agreement - Coherent Module Management Interface Specification, ready for ballot this quarter. • Common Management Interface System (CMIS), used in QSFP-DD, OSFP, and COBO has reserved register map for DWDM and coherent implementations. • Updated optical specifications out for review • Maturing EVM measurement methodology Copyright © 2019 OIF 9