Cisco Bug: CSCvs78362 - High CPU is seen when Subra LC is present in chassis with SFPs plugged in.
Sep 08, 2020
- Cisco Catalyst 4000 Series Switches
Known Affected Releases
Symptom: Sup8-E#show process cpu sorted Core 0: CPU utilization for five seconds: 0%; one minute: 1%; five minutes: 3% Core 1: CPU utilization for five seconds: 0%; one minute: 1%; five minutes: 5% Core 2: CPU utilization for five seconds: 99%; one minute: 99%; five minutes: 90% <<< ISSUE IS HERE Core 3: CPU utilization for five seconds: 0%; one minute: 0%; five minutes: 1% Bnet-C8#sh idprom interface fastEthernet 4/48 Load for five secs: 5%/0%; one minute: 5%; five minutes: 5% Time source is NTP, 15:32:20.125 DST Wed Dec 11 2019 Seeprom data not available Conditions: Insertion of a SFP (OEM or Cisco, BX or FX...) does trigger a high CPU load in WS-X4248-FE-SFP LC. A sole SFP is sufficient to repro the issue. Issue is not limited to WS-X4248-FE-SFP; can be seen in other line cards like ME-X4448-GB-BDL.
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Bug Details Include
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