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Cisco Bug: CSCuo10992 - CRC errors on CTS ports for last 8 ports on N7K-F248XP-25E module

Last Modified

Mar 16, 2016

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

6.2(6)

Description (partial)

Symptom:
On a Nexus 7000 series switch, CRC errors may be observed on the last 8 ports of N7K-F248XP-25E module

Conditions:
This is seen only :
1a. when the port is configured for cts.
1b. when "no propagate-sgt" is configured on the port

2a. when the port is configured for cts.
2b. when "no propagate-sgt" is configured on the port
2c. policy <...>

It will NOT be seen if SGT propagation is enabled using "propagate-sgt" command under "cts manual" mode. 

It will NOT be seen if MACSec is enabled using the "sap pmk ..." command under the "cts manual" mode. (irrespective of whether SGT propagation is enabled or not).

It will NOT be seen with "cts dot1x" mode.

In summary, the issue will only be seen with configurations in steps 1 and 2.
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Bug Details Include

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