Known Issues
The following sections describe known issues in firmware releases and possible workarounds.
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Internal Ref. |
Issue |
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2923464 |
Description: When using MMS4X00-NL Optical module, on rare occasions port that is in NDR speed may get stuck and stay in Polling state. |
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Workaround: On most occasions, toggling the port will solve the issue. |
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Keywords: NVIDIA Quantum-2, NDR, Optical Module |
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Discovered in Version: 31.2010.1404 |
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2849215 |
Description: On NVIDIA Quantum-2 switches, when working with MFA7U10-H0xx cables, if one of the ports in a cage is disabled at the time of initialization by user configuration, reenabling the port will require toggling the link (i.e. enable → disable → enable). |
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Workaround: N/A |
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Keywords: NVIDIA Quantum-2, Cables |
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Discovered in Version: 31.2010.1310 |
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2910161 |
Description: In auto-negotiation flow, using copper cables when toggling both port's sides may cause the port to get stuck on rare occasions. |
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Workaround: Toggle the port again. |
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Keywords: Auto-Negotiation, Copper Cables |
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Discovered in Version: 31.2010.1310 |
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2872688 |
Description: On some occasions, when using NVIDIA Quantum-2 systems with Optical cables, the link up time can take a long time. |
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Workaround: N/A |
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Keywords: Link Up |
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Discovered in Version: 31.2010.1310 |
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2885798 |
Description: In NVIDIA Quantum-2 systems, effective errors may occur with short Copper cable MCP4Y10-N00B. |
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Workaround: N/A |
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Keywords: Copper Cables |
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Discovered in Version: 31.2010.1310 |
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2890632 |
Description: Currently, on NVIDIA Quantum-2 systems, changing the Optical module rate is not allowed. |
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Workaround: N/A |
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Keywords: Optical Modules |
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Discovered in Version: 31.2010.1310 |
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2859363 |
Description: When using NVIDIA Quantum-2 systems in Auto-Neg mode, NDR speed in one lane (1x) is not supported. |
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Workaround: N/A |
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Keywords: Auto-Neg |
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Discovered in Version: 31.2010.1310 |
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2838195 |
Description: Using NDR speed with Optical Transceivers causes bandwidth to be 350Gb/s instead of 400Gb/s in small packets. |
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Workaround: N/A |
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Keywords: Optical Transceivers |
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Discovered in Version: 31.2010.1310 |
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2834238 |
Description: When using Optical Transceiver, toggling a port in a cage may toggle the adjacent port in the cage. |
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Workaround: N/A |
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Keywords: Optical Transceivers, Port Toggle |
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Discovered in Version: 31.2010.1310 |
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2826373 |
Description: When using copper cables, link up time may take up to 5 minutes. |
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Workaround: Arbitration table should be set using only the low priority VL arbitration table. |
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Keywords: Auto Negotiation |
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Discovered in Version: 31.2010.1310 |
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955641 |
Description: VL_HIGH_LIMIT is not affecting the VL arbiter as expected. |
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Workaround: Arbitration table should be set using only the low priority VL arbitration table. |
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Keywords: VL Arbitration |
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Discovered in Version: 31.2010.1310 |
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1249608 |
Description: Configuring weight "0" for VL, results in unexpected behavior. |
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Workaround: Arbitration table should be configured with weights other than "0". |
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Keywords: VL Arbitration |
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Discovered in Version: 31.2010.1310 |
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2057793 |
Description: Congestion profiles in VS-MAD PortProfileSetting support only fixed mode. Percentage mode is not supported. |
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Workaround: N/A |
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Keywords: InfiniBand Congestion Control |
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Discovered in Version: 31.2010.1310 |
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Unsupported Features |
Features that are not yet supported in the NVIDIA Quantum-2 systems:
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