Blade going into faulty state on Brocade switch due to CRC errors with Good EOF exceeding the threshold

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Category:: fabric-interconnect-and-management-switches

Specialty:: brocade

Last Updated:

Applies to

Brocade Switch

Issue

Blade on slot 6 of Brocade switch goes into faulty state.

One of the switch ports on the chip/blade of slot 6 on Brocade switch exceeds the threshold of CRC errors with GoodEOF.
Below events are reported under Errdump on Brocade Switch-

2024/11/15-02:27:19 (IST), [C4-1030], 12084732, SLOT 1 | CHASSIS | PORT 6/4, WARNING, Switch, S6,P-1(20): Internal CRC with good EOF errors exceeded threshold, tuning is required. current:0x19, last:0xf000000b thresh2:0x9000000a.

2024/11/15-02:27:19 (IST), [C4-1056], 12084733, SLOT 1 | CHASSIS, CRITICAL, Switch, Chip in Slot 6, Chip 0 getting faulted with reason 52.
2024/11/15-02:27:20 (IST), [EM-1134], 12084734, SLOT 1 | FFDC | CHASSIS, ERROR, Switch, Slot 6 set to faulty, rc=20015.
2024/11/15-02:27:20 (IST), [RAS-1001], 12084735, SLOT 1 | CHASSIS, INFO, Switch, First failure data capture (FFDC) event occurred.
2024/11/15-02:27:20 (IST), [MAPS-1002], 12084736, SLOT 1 | FID 128, ERROR, Switch, Blade 6, Condition=ALL_SLOTS(BLADE_STATE/NONE==FAULTY), Current Value:[BLADE_STATE, FAULTY], RuleName=defALL_SLOTSBLADE_STATE_FAULTY, Dashboard Category=Fru Health, Quiet Time=None.
2024/11/15-02:27:50 (IST), [MAPS-1021], 12084738, SLOT 1 | FID 128, WARNING, Switch, RuleName=defCHASSISFAULTY_BLADE_1, Condition=CHASSIS(FAULTY_BLADE/NONE>=1), Obj:Chassis [FAULTY_BLADE,1] has contributed to switch status MARGINAL.
2024/11/15-02:27:50 (IST), [MAPS-1020], 12084739, SLOT 1 | FID 128, WARNING, Switch, Switch wide status has changed from HEALTHY to MARGINAL.

Slotshow -m reports the switch blade on Slot 6 as Faulty-

/fabos/cliexec/slotshow -m:

Slot   Blade Type     ID    Model Name     Status
--------------------------------------------------
  1     CP BLADE    175     CPX6           ENABLED
  2     CP BLADE    175     CPX6           ENABLED
  3     SW BLADE    178     FC32-48        ENABLED
  4     SW BLADE    178     FC32-48        ENABLED
  5     SW BLADE    178     FC32-48        ENABLED
  6     SW BLADE    178     FC32-48        FAULTY (21)
  7     CORE BLADE  177     CR32-8         ENABLED
  8     CORE BLADE  177     CR32-8         ENABLED
  9     SW BLADE    178     FC32-48        ENABLED
10     SW BLADE    178     FC32-48        ENABLED
11     SW BLADE    178     FC32-48        ENABLED
12     SW BLADE    178     FC32-48        ENABLED