What's New

This topic provides a list of changes and new features in SONiC version 202012, including NVIDIA Spectrum-specific enhancements and fixes.

Feature/ChangeDescription
SN3420 modulesAdded support for Finisar 1G 10km module (FTLF1318P3BTL) on SN3420 systems.
SN3420 modulesAdded support for Finisar 1GBase-T 1G 100m module (FCLF8522P2BTL) on SN3420 systems.
SN3700, SN4700 cablesAdded support for the following HDR OPNs on SN3700, SN4700 systems at rates of 200GbE:
  • MCP1650-HxxxEyy (copper cable)
  • MCP7H50-HxxxRyy (copper splitter cable)
  • MMA1T00-HS (transceiver)
  • MFS1S00-HxxxE (AOC)
  • MFS1S50-HxxxE (AOC splitter cable)
SN4600C portsAdded support for up to 5W on ports 49 to 64 on SN4600C system.
Policy-based hashingAdded support for policy-based hashing static configurations. For further information, see Policy-based Hashing.
Shared headroomAdded support for shared headroom. This capability is enabled for non-default SKUs, however, it can be enabled on any SKU based upon request. For further information, see Shared Headroom Pool.
Warm rebootWarm Reboot is now tested with different topologies and not just with the community T0 configuration.
Fast rebootFast Reboot is now tested with different topologies and not just with the community T0 configuration.
Fast rebootFast Reboot is supported on NVIDIA Spectrum-3 switch platforms.
System health and LED managementAdded support for system health monitoring and LED management.
Bug fixesSee Issues Fixed in this Version.

Customer-affecting Changes

Feature/ChangeDescription
What Just HappenedVarious What Just Happened (WJH) commands have been changed to contain the poll option. For example, show what-just-happened poll --aggregate. For further information, see section What Just Happened.
Platform FW utilityfwutil command version 2.0.0.0 is now available. For further information, see Platform Firmware Components.

Release Notes

To see the list of known issues and issues that have been fixed, read the Release Notes.

Supported Port Speeds

The following tables show supported port speeds for select switches with NVIDIA Spectrum ASICs.

NVIDIA Spectrum-3 SN4700 Supported Port Speeds

Speed [GbE]Auto-negForceCable / ModulesCable Length [m]
RS FECFC FECNO FEC

400

 

Optics

Up to 5

Copper

Up to 2.5

200/
100 2x/
50 1x (PAM4)

 

 

Optic

Up to 5

Copper

Up to 2.5

100 (NRZ)

 

 

 

Optic

Up to 100

Copper

Up to 5

25/50 (NRZ)

 

 

 

Optic

Up to 100

Copper

Up to 5

10/40

Optic

Up to 100

Copper

Up to 5

1

Optic/Copper

Up to 5

NVIDIA Spectrum-3 SN4600C Supported Port Speeds

Speed [GbE]Auto-negForceCable / ModulesCable Length [m]
RS FECFC FECNO FEC

100 (NRZ)

 

 

 

Optic

Up to 100

Copper

Up to 3

25/50 (NRZ)

 

 

 

Optic

Up to 100

Copper

Up to 5

10/40

Optic

Up to 100

Copper

Up to 3

1

Optic/Copper

Up to 5

NVIDIA Spectrum-2 SN3800 Series Supported Port Speeds

Speed [GbE]Auto-negForceCable / ModulesCable Length [m]Comments
RS FECFC FECNO FEC

100 (NRZ)

 

 

 

Optic

Up to 30

N/A

Copper

Up to 5

25/50 (NRZ)

 

 

 

Optic

Up to 30

N/A

Copper

Up to 5

10/40

Optic

Up to 30

10GBASE-T modules are not supported

Copper

Up to 3

NVIDIA Spectrum-2 SN3700 Supported Port Speeds

Speed [GbE]Auto-negForceCable / ModulesCable Length [m]
RS FECFC FECNO FEC

200/
100 2x/
50 1x (PAM4)**

 

 

Optic

Up to 30

AOM*

Up to 100

Copper

Up to 2

100 (NRZ)

 

 

 

Optic

Up to 100

AOM*

Up to 80km

Copper

Up to 5

25/50 (NRZ)

 

 

 

Optic

Up to 100

AOM*

Up to 10km

Copper

Up to 5

10/40

Optic

Up to 100

AOM*

Up to 10km

Copper

Up to 5

1

Optic

Up to 100

AOM*

Up to 80km

Copper

Up to 5

* Link to supported AOM.
** 200GbE is only supported on SN3700 switches.

NVIDIA Spectrum SN2000 Supported Port Speeds

Speed [GbE]Auto-negForceCable / ModulesCable Length [m]
RS FECFC FECNO FEC

100

Optic

Up to 100

AOM*

Up to 80km

Copper

Up to 5

25/50

Optic

Up to 100

AOM*

Up to 10km

Copper

Up to 5

10/40

Optic

Up to 100

AOM*

Up to 80km

Copper

Up to 5

1

Optic

Up to 100

Copper

Up to 5

* Link to supported AOM.