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Cisco 2960 hulc led process going high

Hi support,


I have below 2960 switch where hulc led process is taking 40 % of  CPU.

Please advise



Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(58)SE2, RELEASE SOFTWARE (fc1)
Technical Support:
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Thu 21-Jul-11 02:13 by prod_rel_team

ROM: Bootstrap program is C2960 boot loader
BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(53r)SEY3, RELEASE SOFTWARE (fc1)

DXBPT01AC04 uptime is 24 weeks, 1 day, 12 hours, 22 minutes
System returned to ROM by power-on
System image file is "flash:/c2960-lanbasek9-mz.122-58.SE2.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

cisco WS-C2960-48PST-L (PowerPC405) processor (revision J0) with 65536K bytes of memory.
Processor board ID FCQ1624Y0UP
Last reset from power-on


Hi,IOS ver 12.2.58 SE seems


IOS ver 12.2.58 SE seems to be a very buggy release train.
Mentioned a few times on the forum.

I strongly suggest that you regrade you switch to 12.2.55

The latest anf suggested release from cisco for you switch is:-
c2960-lanbasek9-mz.122-55.SE9.bin or TAR 


Regards, Alex. Please rate useful posts.
Cisco Employee

The "Hulc LED" process does

The "Hulc LED" process does following tasks:
- Check Link status on every port
- If the switch supports POE, it checks to see if there is a Power Device (PD) detected
- Check the status of the transceiver
- Update Fan status
- Set Main LED and ports LEDs
- Update both Power Supplies and RPS
- Check on system temperature status


Think of upgrading te IOS.



*Plz dont forget to rate usefull posts.