Cisco WLC 5520 Physical Port is down intermittently

[AK002]

Hi All,

We are getting a behaviour for 5520 WLC physical port down frequently, But no service impact. 

WLC model : 5520 8.2.141.0

Can some one help to check this issue. 

Regards,

Ak

[AK002]

Yes it is going down Intermittently..

approximately every couple of hours

(Cisco Controller) >show port summary

           STP   Admin   Physical   Physical   Link   Link

Pr  Type   Stat   Mode     Mode      Status   Status  Trap     POE

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

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

2  Normal  Forw Enable  Auto       1000 Full  Up     Enable  N/A

(Cisco Controller) >show port summary

           STP   Admin   Physical   Physical   Link   Link

Pr  Type   Stat   Mode     Mode      Status   Status  Trap     POE

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

1  Normal  Disa Enable  Auto       Auto       Down   Enable  N/A

2  Normal  Forw Enable  Auto       1000 Full  Up     Enable  N/A

Regards,AK

[Leo Laohoo]

Ok, then post the complete output to the Cisco switch command of "sh interface <BLAH>".

[AK002]

Hi Leo,

Below are the details

Switch Ports Model              SW Version            SW Image

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

*    1 28    WS-C3560G-24PS     12.2(50)SE5           C3560-IPBASE-M

(Cisco Controller) >show port detailed-info

Index                  Description                           Type                   MTU     Speed(Mbps)  MAC address

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

1      Unit: 0 Slot: 0 Port: 1 TenGigabit - Level 0x7040001   ethernetCsmacd       1500   1000          a0-3d-6f-88-95-8e

2      Unit: 0 Slot: 0 Port: 2 TenGigabit - Level 0x7040001   ethernetCsmacd       1500   1000          a0-3d-6f-88-95-8f

interface GigabitEthernet0/10

description *** WLC LAG ***

switchport trunk encapsulation dot1q

switchport mode trunk

switchport nonegotiate

channel-group 20 mode on

spanning-tree portfast trunk

end

i will post the show interface. 

Regards,

Ak 

[marce1000]

Preferably configure syslogging on the controller; then check the port related messages on the syslog server and see wether they contain additional info about the problem.

M.

[Leo Laohoo]

Is the WLC connected to a Cisco switch?

[AK002]

It is connected to Cisco switch 3650 model, i shared those details.

And now the port 1 is down for more time, May be faulty we need to RMA ? or any chance to check further.

Regards,AK

[AK002]

unfortunately there is no Syslog available for capturing the historical logs.

Regards,

Arun