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Cisco Bug: CSCvt48205 - Turin CR: CTE is failing to meet Class B when master port moved to different 25G interface ports

Last Modified

Aug 19, 2020

Products (1)

  • Cisco Network Convergence System 5500 Series

Known Affected Releases

7.3.1.BASE

Description (partial)

Symptom:
NCS-55A1-24Q6H-SS configured as PTP T-BC does not meet G8273.2 Class-B performance. The 2-way time-error is not within the range of +/- 20ns.

Conditions:
1) PTP interfaces are 25Gig interfaces with FEC enabled optics used.
2) There are more than one FEC enabled optics within the same quad (group of 4 ports)
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