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Cisco Bug: CSCvr98506 - Shut down interfaces range of TenGig Ports on the Active Sup randomly causing flaps 40gig ports.

Last Modified

Jul 21, 2020

Products (1)

  • Cisco Catalyst 9400 Series Switches

Known Affected Releases


Description (partial)

Shut/No shut of interface range of  at least 3 interfaces on the Active Sup causes flaps of Forty-gig ports.

Note:      1. Only seen after an interface range at least 3 interfaces on the same ASIC on the active SUP.
               2. The flap on the uplinks are seeing using 40G QSFP 40G LR4 SFP modules
               3. Issue is seen on trains Everest. Fuji and later releases are not affected.
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