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Cisco Cat 2950

Dear All,

We have a Catalyst 2950 and it was working properly with the required configuration. But from today it has started abnormal behavior (Not performing the required switching process). Please find the capture from consol (capture timing 1hrs duration) Also I am not able to telnet/SSH to that SW.

Please find the attach and suggest if any.

Thanks & Rgds

Goutam Sanyal.


Re: Cisco Cat 2950

Hi Goutam,

- Did you reboot the switch and check?

- Do you see any LED alarms ?

Re: Cisco Cat 2950

Hi, SW has been rebooted several times and can find the consol capture text, POST is fine, LED status are also fine, but is has stopped responding at: “Compiled Tue 02-Sep-03 03:33 by antonino” any suggestion? Thanks Goutam


Re: Cisco Cat 2950

LED status are important here, check it against:

It is worth also to try booting the device without any configuration, you can accomplish this by performing the first part of a password recovery and see if you can get into ROMMON if so, try renaming the config.text file and booting the switch again. If no difference, mostlikely it will be a HW issue.

Re: Cisco Cat 2950

Hi Gary,

Thanks for your valuable reply.

As I informed that the switch was in running with a valid configuration and it was performing well. Also as I describe earlier that switch LED status is normal as per Cisco terms. If I go for password recovery it is not taking any key-stork from consol, we have changed the consol also but no satisfactory result found. Find the attached, which we capture during password recovery process.

If we connect the switch port (any port), the led status is fine as in normal condition. But we are not able to telnet or ssh.

That switch stops responding @ “Compiled Tue 02-Sep-03 03:33 by antonino”

Any suggestion?




Re: Cisco Cat 2950


If it is not responding to any key stroke and if you don't have the scroll lock of your keyboard on then we are dealing with a bad unit here.

Re: Cisco Cat 2950

Dear Gary,

Thanks for the point but we have checked all permutation combination. For your information the same laptop is working fine with another router/SW with same hypertrm consol.

Any other suggestion?




Re: Cisco Cat 2950


Since we can't try a "format flash" because we have no access to switch, your next step will be to get in touch with Cisco TAC.