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On Cisco UCS X-Direct Fabric Interconnects, tech support collection is slower than on other platforms and may take over one hour when initiated through Intersight. This is due to the bundling of NXOS and CMC tech supports for both Fabric Interconnects, as well as slower memory access on the CPU compared to the 6500, 6400, and 6600 series FIs. Other Fabric Interconnect platforms are not affected. There is no functional impact due to this issue.

There is no workaround.

6.0(2.260045)

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Fabric Interconnect (FI) ports using 64G Fibre Channel (FC) SFPs may experience incrementing input discards and errors, leading to errDisabled state due to high bit error rates when configured at 16G speed in FC Switch mode. Additionally, FC Name Server (FCNS) entries for targets connected to MDS switches may show empty vendor names on the FI. This issue occurs when FC ports on Cisco UCS 6652 FI use 64G FC SFPs but are set to operate at 16G speed while sending FCoE traffic across multiple VSANs.

Use 16G or 32G SFP.

6.0(2.260045)

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On Cisco UCSX-9508 chassis configured with a Cisco UCS X580p PCIe Node, changing from a higher to a lower available power policy can cause one or more servers or GPUs to receive insufficient or no power. This may result in affected servers or GPUs shutting down, or the system becoming oversubscribed and at risk of a chassis brownout.

Additionally, GPUs may continue to stay 'On' even when power is not allocated to the paired Cisco UCS X-Series server or the GPU server. This can lead to inaccurate status reporting and potential operational issues.

1. Do not change the power policy from a higher available power setting to a lower one.

2. If the policy is changed accidentally, revert to the original setting.

6.0(1.250229)

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On Cisco UCS 6500 Series and 6400 Series Fabric Interconnects, when the allowed VLAN string on the vEth interface exceeds 900 characters, data corruption occurs over time. This eventually causes both Fabric Interconnects to perform a hard reboot. The generic error message Reset Requested due to Fatal Module Error is displayed when the show system reset-reason command is run.

Configure all vEth interfaces so that their allowed VLAN string length is 900 characters or less.

6.0(1.250198)

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On UCS FI 6664, Fibre Channel (FC) ports using 64G SFP modules may go into an error-disabled state due to high bit error rates when configured at 16G speed.

Use 16G or 32G SFP modules instead of 64G SFP when configuring the port at 16G speed.

6.0(1.250071)