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PERF_IMPACT and LATENCY_CLEAR events reported on F-Ports due to faulty switch SFP

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Category:
fabric-interconnect-and-management-switches
Specialty:
brocade
Last Updated:

Applies to

Brocade Switches

Issue

  • IO_PERF_IMPACT and IO_LATENCY_CLEAR along with slow drain device events reported on F-Ports under errdump as shown below:

2023/01/25-15:20:43 (IST), [MAPS-2070], 24206, SLOT 1 | FID 128, WARNING, Switch_Name, slot5 port40, F-Port 5/40, Condition=ALL_PORTS(DEV_LATENCY_IMPACT==IO_PERF_IMPACT), Current Value:[DEV_LATENCY_IMPACT, IO_PERF_IMPACT, (32.6% of 10 secs in VC: 8) ], RuleName=defALL_PORTS_IO_PERF_IMPACT_UNQUAR, Dashboard Category=Fabric Performance Impact.
2023/01/25-15:21:43 (IST), [MAPS-2071], 24207, SLOT 1 | FID 128, INFO, Switch_Name, slot5 port40, F-Port 5/40, Condition=ALL_PORTS(DEV_LATENCY_IMPACT==IO_LATENCY_CLEAR), Current Value:[DEV_LATENCY_IMPACT, IO_LATENCY_CLEAR], RuleName=defALL_PORTS_IO_LATENCY_CLEAR, Dashboard Category=Fabric Performance Impact.

2023/01/25-14:00:43 (IST), [MAPS-1022], 24178, SLOT 1 | FID 128, WARNING, Switch_Name, Port 5/40 (Port index 232) has been marked as Slow Drain Device.
2023/01/25-14:25:43 (IST), [MAPS-1025], 24187, SLOT 1 | FID 128, WARNING, Switch_Name, Port 5/40 (Port index 232) removed from the Slow Drain Device Quarantine Group.

  • Review the SFP Tx and Rx power on the affected switch port and ensure that they are within the recommended range.
  • Check for any physical layer issues on the port.
  • In case of major disruption caused by this, as a workaround disable the port until the issue is resolved.

 

 

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