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Occasional Contributor
Posts: 7
Registered: ‎08-27-2012

Duplicate NPIV WWNs

Hi all,

I have this message in my errshow:

2012/09/06-16:33:08, , 432639, SLOT 4 | FID 128, WARNING, FL-D-PRD-CORE01-D23, NPIV port 2/19 has same Port WWN with old port 2/43 with pid 0x176b08 as part of duplicate Port WWN detection policy

On output from portshow shows the same WWN on these ports:

------------------------------------------------------

FL-D-PRD-CORE01-D23:FID128:nt\waraujo> portshow 2/19

portIndex:  83

portName: slot2 port19

portHealth: No Fabric Watch License

Authentication: None

portDisableReason: None

portCFlags: 0x1

portFlags: 0x24b03       PRESENT ACTIVE F_PORT G_PORT U_PORT LOGICAL_ONLINE LOGIN NOELP LED ACCEPT FLOGI

LocalSwcFlags: 0x0

portType:  17.0

portState: 1    Online

Protocol: FC

portPhys:  6    In_Sync         portScn:   32   F_Port

port generation number:    0

state transition count:    1

portId:    175300

portIfId:    4322001a

portWwn:   20:53:00:05:33:02:ac:00

portWwn of device(s) connected:

        20:00:b4:99:ba:28:3d:a2

Distance:  normal

portSpeed:  N8Gbps

------------------------------------------------------

FL-D-PRD-CORE01-D23:FID128:nt\waraujo> portshow 2/43

portIndex: 107

portName: slot2 port43

portHealth: No Fabric Watch License

Authentication: None

portDisableReason: None

portCFlags: 0x1

portFlags: 0x24b03       PRESENT ACTIVE F_PORT G_PORT U_PORT NPIV LOGICAL_ONLINE LOGIN NOELP LED ACCEPT FLOGI

LocalSwcFlags: 0x0

portType:  17.0

portState: 1    Online

Protocol: FC

portPhys:  6    In_Sync         portScn:   32   F_Port

port generation number:    0

state transition count:    1

portId:    176b00

portIfId:    43220022

portWwn:   20:6b:00:05:33:02:ac:00

portWwn of device(s) connected:

        10:00:00:00:c9:c8:b2:6c

        10:00:00:00:c9:c8:b4:5e

        10:00:00:00:c9:c8:17:c6

        10:00:00:00:c9:c8:18:b6

        10:00:00:00:c9:c4:a5:2e

        10:00:00:00:c9:cd:ec:2e

        10:00:00:00:c9:cd:ed:56

        10:00:00:00:c9:cd:ee:aa

        20:11:b4:99:ba:28:3d:a2

Distance:  normal

portSpeed:  N8Gbps

------------------------------------------------------

How can I fix this?

Is possible ESX Server generate 2 equal WWNs?

Thanks,

Wellington

Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: Duplicate NPIV WWNs

Hi,

With command portloginshow <slot/port> you can check which wwn matchs with PID 0x176b08.

I do not think that ESX is responsible of generating 2 equal WWNs... It looks that ports 2/19 and 2/43 are connected to the same Blade switch. In environments like yours, I have seen that when a host is moved from an upstream port to another, the blade switch does not update the switch, FL-D-PRD-CORE01-D23 in this case, and the switch does not update the Name server properly. I would bet that this is the reason why you get this event. I would blame Firmware version in the Blade switch as the originator of the issue.

Rgds

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