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WLC 5508 duplex mismatch error

Hi I've got a WLC 5508 connected to a Catalyst 6000 switch. In the switch I've get a CDP duplex mismatch error every 30 min.

%CDP-4-DUPLEXMISMATCH:Full/half duplex mismatch detected on port 3/23

with the show port command I can see this:

Port  Name                 Status     Vlan       Duplex Speed       Type

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

3/23  WLC           connected  trunk        full        1000 10/100/1000

With the show CDP neigh I see a duplex mismatch

C6K9> (enable) sh cdp neig 3/23 detail

Port (Our Port): 3/23

Holdtime: 142 sec

Capabilities: HOST

Version:

  Manufacturer's Name: Cisco Systems Inc.  Product Name: Cisco Controller  Product Version: 7.0.116.0  RTOS Version: Erro  Bootloader Version: 1.0.1  Build Type: DATA + WPS

Platform: AIR-CT5508-K9

Port-ID (Port on Neighbors's Device): GigabitEthernet0/0/1

VTP Management Domain: unknown

Native VLAN: unknown

Duplex: half (Mismatch)

But in the WLC console there is not half duplex

(WLC5508) show>port 1

           STP   Admin   Physical   Physical   Link   Link

Pr  Type   Stat   Mode     Mode      Status   Status  Trap     POE    SFPType  

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

1  Normal  Forw Enable  Auto       1000 Full  Up     Enable  N/A     1000BaseTX

I don't have errors in the port counters

How I can resolve this duplex mismatch?

Everyone's tags (3)
1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

WLC 5508 duplex mismatch error

Try upgrading the firmware of the WLC to 7.0.230.0.

1 REPLY
Hall of Fame Super Gold

WLC 5508 duplex mismatch error

Try upgrading the firmware of the WLC to 7.0.230.0.

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