Cisco Bug: CSCvh79981 - Pyke : Interface link is down on specific ports on when using QSFP-100G-CWDM4-S
Aug 11, 2019
- Cisco Network Convergence System 5500 Series
Known Affected Releases
Symptom: Interface will be down when connected back to back with QSFP-100G-CWDM4-S optics in NCS-55A1-24H system show controller hundredGigE R/S/I/P CLI o/p will show FEC is disabled for one interface and Enabled for other interface. CLI o/p snippet for FEC enabled: Forward error correction: Standard (Reed-Solomon) CLI o/p snippet for FEC disabled: Forward error correction: Disabled Conditions: No FEC configuration under the interface for both ports.
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Bug Details Include
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