Security Hardening Enhancements: This release contains important reliability improvements and security hardening enhancements. NVIDIA recommends upgrading your devices' firmware to this release to improve the devices’ firmware security and reliability.
To generate PLDM packages for firmware updates, users must install and use the MFT version that corresponds with the respective firmware release.
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Feature/Change |
Description |
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40.49.1014 |
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PCC/ZTR-RTT Congestion-Control Histogram Collection |
Added support for Congestion-Control histogram collection in the PCC/ZTR-RTT algorithm. After enabling this capability, customers can read RATE and RTT histogram counters for PCC-managed flows. |
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ZTR_RTTCC Tunable Probe Timeout |
Added a new parameter to the ZTR_RTTCC algorithm to define the probe-packet timeout threshold. |
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Port LEDs |
Firmware now supports two LEDs per transceiver module on the GB300 OSFP board. When configured for multiple LEDs per module, LED control (including the Module LED Control Register and host-visible indications) drives the correct LED for the relevant module and lane. Boards with a single LED per module are unchanged when |
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Link up/Down dmesg Messages |
When powering down the OSFP port, the link up/down dmesg messages were previously sent only to the primary ASIC, they are now sent to the secondary ASIC as well. |
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PSP Transport Packet Reformat |
Added support for a new packet reformat type for PSP transport packets. This reformat removes the PSP trailer and the UDP + PSP transport headers, and updates the IP Protocol field based on the PSP next_header value. |
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Persistent CRDT Token |
CRDT token behavior has changed and is now persistent. Previously, debug firmware was allowed only if a CRDT token was applied temporarily, meaning it was erased after reset, or if another debug firmware was already running. Once a user moved to production firmware, a new token was required to switch back to debug firmware. With the new behavior, the token is saved to flash, meaning it remains readable via MDSR even after reset. Once installed, the token allows the user to move between debug and production firmware until it is explicitly revoked using the MDSR set command. |
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Bug Fixes |
See Bug Fixes in this Firmware Version section. |
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