Cisco Bug: CSCvi71691 - On sup removal, all ports on LC C9400-LC-48UX drop about 3 to 4 percent traffic
Jun 23, 2018
- Cisco Catalyst 9400 Series Switches
Known Affected Releases
Symptom: Queuing drops are seen with fully Loaded 9400 platform switch with 10 slot chassis. Issue is seen during OIR of Active SUP. QoS Module will report Soft Buffer Drops (SBufDrop) during the failure. Issue is specific to ports under 7th slot LC module. Traffic on all other ports works fine. Conditions: Issue is seen, with OIR(Removal alone) of Active SUP under Traffic conditions. Issue will get fixed if SUP is re-inserted back and traffic resume. Issue is visible only with higher packet size, beyond 1500 Bytes, at line rate through all ports. Traffic range 64- 1500 works fine during the OIR.
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