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Fibre Channel (SAN)

Posts: 0

ql error Brocade

In my server , i have powerpath driver accessing one vmax storage.

I´m receiving hba error.

# powermt display

VPLEX logical device count=66


----- Host Bus Adapters ---------  ------ I/O Paths -----  ------ Stats ------

###  HW Path                       Summary   Total   Dead  IO/Sec Q-IOs Errors


   5 qla2xxx                       optimal     264      0       -     0   1386

   6 qla2xxx                       optimal     264      0       -     1      0

See my brocade output commands.

I want to know , where is located the problem .   If is in GBIC /  Fiber cable or switch port

swdcx01:admin> portshow 1/21

portIndex: 133

portName: slot1 port21

portHealth: MARGINAL

Authentication: None

portDisableReason: None

portCFlags: 0x1


LocalSwcFlags: 0x0

portType:  17.0

portState: 1    Online

Protocol: FC

portPhys:  6    In_Sync         portScn:   32   F_Port

port generation number:    708

state transition count:    16

portId:    0a8500

portIfId:    4312001d

shareIfId:   43120815

portWwn:   20:85:00:27:f8:32:85:00

portWwn of device(s) connected:


Distance:  normal

portSpeed: N4Gbps

Credit Recovery: Inactive

Aoq: Inactive

FAA: Inactive

F_Trunk: Inactive

LE domain: 0

FC Fastwrite: OFF

Interrupts:        0          Link_failure: 7          Frjt:         0

Unknown:           0          Loss_of_sync: 0          Fbsy:         0

Lli:               370        Loss_of_sig:  7

Proc_rqrd:         231        Protocol_err: 0

Timed_out:         0          Invalid_word: 48540829

Rx_flushed:        0          Invalid_crc:  1441

Tx_unavail:        0          Delim_err:    0

Free_buffer:       0          Address_err:  0

Overrun:           0          Lr_in:        8

Suspended:         0          Lr_out:       24

Parity_err:        0          Ols_in:       7

2_parity_err:      0          Ols_out:      8

CMI_bus_err:       0

Port part of other ADs: No


          frames      enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   frjt   fbsy  c3timeout    pcs

       tx     rx      in    err    g_eof  shrt   long   eof     out   c3    fail    sync   sig                 tx    rx    err

133:  271.9m  69.9m   1.5k   1.5k   1.4k   0      0     86     48.5m 446      7      0      7      0      0    444      0      0

Posts: 0

Re: ql error Brocade

I want to know , where is located the problem .   If is in GBIC /  Fiber cable or switch port

why do yoou rule out>


Or HBA Driver

Or HBA BIOS (settings)

If you have easy physical access to the gear I would,

-check sfpshow {switchport } to look at the RX power levels and compare those against known properly functioning HBA switch port if RX level considerably lower than reference port, replace HBA > error still there

-replace SFP in switch > error still present if no it was the sfp if yes

-move host to different switch port > error still present if no it was the switchport if yes

-replace fibre cable > error still there rechack the above

Posts: 0

Re: ql error Brocade

see my sfpshow  of my bad port and after good port.

the RX Power is practically the same .

swdcx01:admin> sfpshow  1/21

Identifier:  3    SFP

Connector:   7    LC

Transceiver: 540c404000000000 2,4,8_Gbps M5,M6 sw Short_dist

Encoding:    1    8B10B

Baud Rate:   85   (units 100 megabaud)

Length 9u:   0    (units km)

Length 9u:   0    (units 100 meters)

Length 50u (OM2):  5    (units 10 meters)

Length 50u (OM3):  0    (units 10 meters)

Length 62.5u:2    (units 10 meters)

Length Cu:   0    (units 1 meter)

Vendor Name: BROCADE

Vendor OUI:  00:05:1e

Vendor PN:   57-1000117-01

Vendor Rev:  A

Wavelength:  850  (units nm)

Options:     003a Loss_of_Sig,Tx_Fault,Tx_Disable

BR Max:      0

BR Min:      0

Serial No:   UAF4124600000A2

Date Code:   121111

DD Type:     0x68

Enh Options: 0xfa

Status/Ctrl: 0x82

Alarm flags = 0x5, 0x40

Warn Flags = 0x5, 0x40

                                           Alarm                  Warn

                                    low         high       low         high

Temperature: 38      Centigrade      -10        90         -5          85

Current:     7.144   mAmps           1.000      17.000     2.000       14.000

Voltage:     3281.2  mVolts          2900.0     3700.0     3000.0      3600.0

RX Power:    -25.4   dBm (2.9  uW)   10.0   uW  1258.9 uW  15.8   uW   1000.0 uW

TX Power:    -3.3    dBm (471.2 uW)  125.9  uW  631.0  uW  158.5  uW   562.3  uW

State transitions: 1

Last poll time: 10-05-2013 UTC Sat 17:02:10

Posts: 0

Re: ql error Brocade

Each SFP has it's own operational parameters and so will qlogic have its own.

But Brocade best practice for shortwave SFPs is between 110 and 490 uW as I read in another thread.

Looking in my environment between 300 and 400 uWatt seems the bandwith in which my RX levels operate (mix of emulex/qlogic cards as well as virtual connect modules).

RX Power: -25.4   dBm (2.9  uW)

Looks to low to me. It could be the sfp on the HBA or a damaged fiber patchpanel.

If you can get a brand new cable, measure it's db loss and reconnect your host with that cable bypassing any patches.

If the power level is still low, replace the HBA.

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