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3750 LED blinking

Hi team,

We have various stacks of 3750 switches and we are facing an issue with blinking LEDs. Basically when you see the switch stack, not all ports that are up and running are blinking.

This is not a major issue to us but I have cleaned the patchroom 2 days ago removing all ports that are down down (notconnect) with a last input date of more than 2 months. However, people complained about lost connectivity the last 2 days.

I am assuming that there may be a bug in the IOS code that states that a switchport is down although it may not be. Find below the show ver output of a stack.

Cisco IOS Software, C3750E Software (C3750E-IPBASEK9NPE-M), Version 12.2(55)SE1, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Thu 02-Dec-10 06:08 by prod_rel_team

Image text-base: 0x00003000, data-base: 0x02800000

ROM: Bootstrap program is C3750E boot loader

BOOTLDR: C3750E Boot Loader (C3750X-HBOOT-M) Version 12.2(53r)SE1, RELEASE SOFTWARE (fc1)

License Level: ipbase

License Type: Permanent

Next reload license Level: ipbase

cisco WS-C3750X-48P (PowerPC405) processor (revision A0) with 262144K bytes of memory.

Processor board ID

512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address       : 50:3D:E5:FA:A8:00

Motherboard assembly number     : 73-12553-04

Motherboard serial number       : FDO15021WG7

Model revision number           : A0

Motherboard revision number     : A0

Model number                    : WS-C3750X-48PF-S

Daughterboard assembly number   : 800-32727-01

Daughterboard serial number     :

System serial number            :

Top Assembly Part Number        : 800-31324-01

Top Assembly Revision Number    : A0

Version ID                      : V01

CLEI Code Number                : COMJZ00ARA

Hardware Board Revision Number  : 0x02

Switch Ports Model              SW Version            SW Image

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

*    1 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9NPE-M

     2 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9NPE-M

     3 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9NPE-M

     4 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9NPE-M

     5 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9NPE-M

     6 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9NPE-M

     7 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9-M

     8 54    WS-C3750X-48P      12.2(55)SE1           C3750E-IPBASEK9NPE-M

TIA,

Nicos Nicolaides       

TIA, Nicos Nicolaides
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