Cisco Catalyst 2960G WARNING: The switch is not usable

Answered Question
Sep 14th, 2010


I am having an issue with a working Cisco Catalyst 2960G.

I have amber lights with System and RPS.

I have connected it through console. At least the OS gets started. However, the following message appears:

!!! WARNING: The switch is not usable !!!

Unable to create l2trace server process, socket_open() failed

Press RETURN to get started!

*Mar  1 00:00:18.446: hl2mcm_core_process: hl2mcm_install_hl2mcm_ctrl_entries() failed.

*Mar  1 00:00:18.446: %SYS-3-HARIKARI: Process HL2MCM top-level routine exited

*Mar  1 00:00:19.184: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlanCannot Get the number of ports in MAC notification

*Mar  1 00:00:19.453: %SW_VLAN-4-IFS_FAILURE: VLAN manager encountered file operation error: call = ifs_read_until (header) / file =  / code = 21 (Is a directory) / bytes transfered = -1

-Traceback= A3806C A38780 17E07C 17A1C4 E073A0 DFE068

*Mar  1 00:00:20.518: %SYS-5-RESTART: System restarted --

Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(44)SE6, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2009 by Cisco Systems, Inc.

Compiled Mon 09-Mar-09 18:10 by gereddy

*Mar  1 00:00:20.535: Unable to open UDP socket on CMP_PORT

!!! WARNING: The switch is not usable !!!


Can you please help.

I have this problem too.
0 votes
Correct Answer by glen.grant about 6 years 1 month ago

  Agreed ,   the switch is no good . Get it RMA'd....

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Overall Rating: 5 (1 ratings)
vragotha Tue, 09/14/2010 - 04:29

This is a hardware problem on the switch. You should get it replaced.

Correct Answer
glen.grant Tue, 09/14/2010 - 04:31

  Agreed ,   the switch is no good . Get it RMA'd....


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