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Brocade FC port with pcs err and FC disabled invalid words threshold

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

Applies to

Brocade fiber switch (FC)

Issue

Brocade port with pcs err statistics increasing and port disabled offline due to invalid words threshold exceeded
 
Example:

switchshow
3    N32       No_Sync     FC Disabled (Port Invalid Words threshold exceeded)

porterrshow -i 3

 pcs
 err
 67   

portshow -i 3
portHealth: ERROR
portDisableReason: Port Invalid Words threshold exceeded
portCFlags: 0x0
portFlags: 0x4021        PRESENT U_PORT DISABLED LED
LocalSwcFlags: 0x0
portType:  26.0
portState: 2    Offline
Protocol: FC
portPhys:  5 No_Sync         portScn:   2    Offline
state transition count:    3
Interrupts:        9 Link_failure: 1 Frjt:         0
Unknown:           0    Loss_of_sync: 0 Fbsy:         0
Lli:               9    Loss_of_sig: 0
Proc_rqrd:         370686       Protocol_err: 0
Timed_out:         0    Invalid_word: 67
Tx_unavail:        0    Invalid_crc: 0
Delim_err:         0    Address_err:  0
Lr_in:             0    Ols_in:       0
Lr_out:            0    Ols_out: 0
Cong_Prim_in:       0
Nos_in:            1    Nos_out:      0

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