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Invalid Transmitted Words (ITW) errors are reported on monitoring Brocade switch port

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1,158
Visibility:
Public
Votes:
0
Category:
fabric-interconnect-and-management-switches
Specialty:
hw
Last Updated:

Applies to

  • SAN
  • Brocade
  • ONTAP 9

Issue

  • Invalid Transmitted Words (ITW) port counter is high and incrementing on a Brocade switch port.

brocade_switch> portshow

Example:

portshow 9
portDisableReason: None
portCFlags: 0x1
portFlags: 0x20b03 PRESENT ACTIVE F_PORT G_PORT U_PORT LOGICAL_ONLINE LOGIN NOELP ACCEPT FLOGI
LocalSwcFlags: 0x0
portType:  26.0
POD Port: Port is licensed
portState: 1Online   
Protocol: FC
portPhys:  6In_Sync  portScn:   32F_Port    
port generation number:    0
state transition count:    1          

portId:    050900
portIfId:    43020035
portWwn:   20:09:88:94:71:eb:e1:0d
portWwn of device(s) connected:
21:00:00:10:86:ac:69:80
16b Area list:
Distance:  normal
portSpeed: 16Gbps

FEC: Inactive
Credit Recovery: Inactive
Aoq: Inactive
FAA: Inactive
F_Trunk: Inactive
LE domain: 0
Peer beacon: Off
FC Fastwrite: OFF
Interrupts:        134        Link_failure: 3          Frjt:         0          
Unknown:           0          Loss_of_sync: 7          Fbsy:         0          
Lli:               1224       Loss_of_sig:  0          
Proc_rqrd:         253        Protocol_err: 0          
Timed_out:         0          Invalid_word: 23044          
Tx_unavail:        0          Invalid_crc:  0
Delim_err:         0          Address_err:  0          
Lr_in:             2          Ols_in:       0          
Lr_out:            0          Ols_out:      32          

 

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