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Cisco Bug: CSCut02462 - Typhoon: 10G OTN port is seeing bogus UC errors with i.7 FEC

Last Modified

Jul 20, 2018

Products (8)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases


Description (partial)

'show controller dwdm' output is showing lot of UC (uncorrectable) FEC errors.

Extreme noisy environment with fiber length of 1000 km or more.
The issue is seen only with 'g709 fec enhanced i.7'.

controller dwdm0/6/0/0
 g709 fec enhanced i.7
 admin-state in-service
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